Steven Hartpence v. Kinetic Concepts, Inc. ( 2022 )


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  •                      FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    UNITED STATES OF AMERICA EX REL.                   No. 19-55823
    STEVEN J. HARTPENCE, Relator,
    Plaintiff-Appellant,                 D.C. No.
    2:08-cv-01885-
    v.                             CAS-AGR
    KINETIC CONCEPTS, INC.; KCI-USA,
    INC.,                                                OPINION
    Defendants-Appellees.
    Appeal from the United States District Court
    for the Central District of California
    Christina A. Snyder, District Judge, Presiding
    Argued and Submitted July 10, 2020
    Pasadena, California
    Filed August 9, 2022
    Before: Bobby R. Baldock, * Marsha S. Berzon, and
    Daniel P. Collins, Circuit Judges.
    Opinion by Judge Collins
    *
    The Honorable Bobby R. Baldock, United States Circuit Judge for
    the U.S. Court of Appeals for the Tenth Circuit, sitting by designation.
    2      U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS
    SUMMARY **
    False Claims Act
    The panel reversed the district court’s summary
    judgment in favor of defendants in a qui tam action brought
    under the False Claims Act, and remanded for further
    proceedings.
    Plaintiff and relator Stephen J. Hartpence alleged that
    defendants Kinetic Concepts, Inc., and its indirect subsidiary
    KCI USA, Inc. (collectively, “KCI”) submitted claims to
    Medicare in which KCI falsely certified compliance with
    certain criteria governing Medicare payment for the use of
    KCI’s medical device for treating wounds. The district court
    granted summary judgment to KCI, concluding that
    Hartpence had failed to establish a genuine issue of material
    fact as to the False Claims Act elements of materiality and
    scienter.
    In the context of a false certification of compliance with
    a regulatory or statutory requirement for payment, the
    certification is material if the requirement is so central to the
    claims that the government would not have paid these claims
    had it known that the requirement was not satisfied. The
    panel held that there was a genuine issue of material fact as
    to whether KCI’s use of a “KX” modifier was material to
    KCI’s reimbursement claims submitted to Medicare. This
    modifier indicated compliance with the requirements of
    Local Coverage Determinations (“LCD”) issued by Durable
    Medical Equipment Medicare Administrative Contractors,
    **
    This summary constitutes no part of the opinion of the court. It
    has been prepared by court staff for the convenience of the reader.
    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS             3
    which processed claims on behalf of the Centers for
    Medicare and Medicaid Services. The panel concluded that
    the fact that the KX modifier was not accepted at face value
    in case-specific auditing did not mean that compliance with
    the LCD criteria (which is what use of the modifier was
    supposed to signify) was not material to most payment
    decisions on “stalled-cycle” claims, where KCI’s device was
    used but there was no wound improvement.
    The panel agreed that compliance with the specific LCD
    criterion that there be no stalled cycle would not be material
    if, upon case-specific review, the Government routinely paid
    stalled-cycle claims. In other words, if stalled-cycle claims
    were consistently paid when subject to case-specific
    scrutiny, then a false statement that avoided that scrutiny and
    instead resulted in automatic payment would not be material
    to the payment decision. The panel concluded, however, that
    the record did not show this to be the case. The panel
    considered administrative rulings concerning claims that
    were initially denied, post-payment and pre-payment audits
    of particular claims, and a 2007 report by the Office of
    Inspector General of the U.S. Department of Health and
    Human Services. The panel concluded that none of these
    forms of evidence supported the district court’s summary
    judgment ruling.
    The panel held that the district court further erred in
    ruling that there was insufficient evidence that KCI acted
    with the requisite scienter. The district court ruled that,
    because the use of the KX modifier on stalled-cycle claims
    was not material, evidence that KCI knew that it was
    wrongly using the KX modifier was insufficient to establish
    scienter. Because the district court’s premise concerning
    materiality was wrong, the resulting conclusion that it drew
    as to scienter was necessarily vitiated. Assuming without
    4     U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS
    deciding that scienter requires knowledge of materiality as
    well as knowledge of falsity, the panel concluded that the
    record in this case established a triable issue regarding KCI’s
    knowledge of the materiality of its misuse of the KX
    modifier.
    The panel further concluded that the remainder of the
    district court’s reasoning concerning scienter rested on a
    clear failure to view the evidence in the light most favorable
    to the relator. The panel concluded that there was ample
    evidence to permit a rational trier of fact to conclude that
    KCI knew that it was a false statement to attach the KX
    modifier to a claim that did not satisfy the LCD and that KCI
    did so knowing that it might thereby escape case-specific
    scrutiny that, in many cases, it would lose.
    COUNSEL
    Mark I. Labaton (argued), Glancy Prongay & Murray LLP,
    Los Angeles, California; Michael A. Hirst, Hirst Law Group,
    Davis, California; Patrick J. O’Connell, Law Offices of
    Patrick J. O’Connell, Austin, Texas; Timothy Cornell,
    Cornell Dolan P.C., Boston, Massachusetts; for Plaintiff-
    Appellant.
    Gregory M. Luce (argued), Bradley A. Klein, Paul A.
    Solomon, and John A.J. Barkmeyer, Skadden Arps Slate
    Meagher & Flom LLP, Washington, D.C.; Matthew E. Sloan
    and Rachael T. Schiffman, Skadden Arps Slate Meagher &
    Flom LLP, Los Angeles, California; for Defendants-
    Appellees.
    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS            5
    OPINION
    COLLINS, Circuit Judge:
    In this qui tam action brought under the False Claims Act
    (“FCA”), 
    31 U.S.C. § 3729
     et seq., Plaintiff and Relator
    Stephen J. Hartpence alleges that Defendants Kinetic
    Concepts, Inc. and its indirect subsidiary KCI USA, Inc.
    (collectively, “KCI”) submitted claims to Medicare in which
    KCI falsely certified compliance with certain criteria
    governing Medicare payment for the use of KCI’s medical
    device for treating wounds. The district court granted
    summary judgment to KCI, concluding that Hartpence had
    failed to establish a genuine issue of material fact as to the
    FCA elements of materiality and scienter. Because there are
    triable issues as to both elements, we reverse and remand.
    I
    A
    KCI manufactures and supplies a medical device that
    helps to heal wounds by means of a method called Vacuum
    Assisted Closure Therapy, or “VAC Therapy.” KCI’s
    device, which requires a prescription, uses “an electric pump
    connected to specialized wound dressings” to apply
    “negative pressure” at the site of the wound, thereby drawing
    the edges of the wound closer together. Payment for such
    VAC Therapy treatments may be covered by Medicare for
    patients enrolled in Medicare Part B. When the therapy is
    prescribed to a Medicare-beneficiary patient, KCI directly
    bills the Government—on a monthly basis—on that patient’s
    behalf. The dispute in this case centers on whether the
    claims that KCI submitted for payment falsely certified that
    the applicable criteria for payment were met.
    6      U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS
    Under the relevant provision of the Medicare Act, “items
    and services” otherwise covered by Medicare Part B are
    generally eligible for reimbursement only if they are
    “reasonable and necessary for the diagnosis or treatment of
    illness or injury or to improve the functioning of a
    malformed body member.” 42 U.S.C. § 1395y(a)(1)(A).
    The Medicare Act authorizes the Centers for Medicare and
    Medicaid Services (“CMS”) to facilitate the evaluation and
    reimbursement of claims for covered medical treatment by
    contracting with private entities, currently known as
    “medicare administrative contractors,” who process those
    claims on the Government’s behalf. See 42 U.S.C.
    § 1395kk-1(a)(1); see also id. § 1395u(a). With respect to
    the sort of durable medical equipment at issue here, CMS
    has invoked this authority by entering into contracts with
    four regional Durable Medical Equipment Medicare
    Administrative Contractors (“DME MACs”). 1              CMS
    delegates the initial determination of which treatments are
    “reasonable and necessary” to these DME MACs, who are
    authorized by the Medicare Act to issue Local Coverage
    Determinations (“LCDs”) addressing “whether or not a
    particular item or service is covered” on a DME MAC-wide
    basis under that standard. See 42 U.S.C. § 1395ff(f)(2)(B)
    (citing id. § 1395y(a)(1)(A)); see also id. § 1395kk-1(a)(4).
    1
    Prior to the effective date of the relevant provisions of the
    Medicare Prescription Drug, Improvement, and Modernization Act of
    2003, the statute referred to these contracting private entities as
    “carriers.” See 42 U.S.C. § 1395u(a) (2002 ed.). Correspondingly, the
    predecessors to the four DME MACs were known as “Durable Medical
    Equipment Regional Carriers.” No party contends that this distinction is
    material to this case, so for the sake of simplicity we will refer to these
    entities as “DME MACs” without regard to the specific timeframe at
    issue.
    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS                     7
    Effective October 1, 2000, all four DME MACs adopted
    “substantially identical” LCDs to clarify when use of a
    “negative pressure wound therapy” (“NPWT”) pump—such
    as KCI’s VAC Therapy device—would be considered to be
    “reasonable and necessary” and therefore covered under
    Medicare Part B. 2 Among other rules, the 2000 LCDs
    provided that coverage for NPWT pumps ends when “[a]ny
    measurable degree of wound healing has failed to occur over
    the prior month.” The LCDs required that the requisite
    “progressive wound healing from month to month” be
    “documented in the patient’s medical records” through
    “quantitative measurements of wound characteristics” such
    as “wound length and width (surface area), or depth.” 3 To
    expedite claim processing, the relevant LCDs provided that
    a supplier could demonstrate that a given claim met all
    relevant conditions for coverage by adding to the claim a
    specified two-letter modifier. Here, that modifier was
    initially “ZX,” and then, beginning in July 2002, “KX.”
    Because the parties agree that these two modifiers had the
    same meaning, we will henceforward refer only to the “KX”
    modifier. The LCDs expressly stated, in bolded and
    underscored typeface, that the KX modifier “must not be
    used” if, inter alia, the required month-over-month
    measurable wound healing had failed to occur.
    As one of the DME MAC directors explained at his
    deposition, “if the KX modifier is there” in a submitted
    2
    At the time, LCDs such as these were referred to as “Local Medical
    Review Policies.” Because the parties do not contend that the difference
    in nomenclature has any significance for the issues on appeal, we will
    refer to them simply as “LCDs,” without regard to the timeframe.
    3
    In October 2005, the LCDs were revised to specifically define
    “[w]ound healing” as “improvement occurring in either surface area
    (length times width) or depth of the wound.”
    8     U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS
    claim, “then the system is set up to pay that claim.”
    Conversely, however, the lack of a KX modifier did not
    necessarily mean that payment of a claim would ultimately
    be denied. Although the same director explained that “the
    system generates an automatic denial” if “the KX modifier
    is missing,” KCI could appeal that denial through a multi-
    level review and appeal process. See 
    42 C.F.R. § 405.900
     et
    seq.     That process includes a hearing before an
    Administrative Law Judge (“ALJ”), see 
    id.
     §§ 405.1000–
    405.1058, and the ALJ’s decision may be appealed to the
    Medicare Appeals Council, id. §§ 405.1100–405.1130. In
    conducting such review, the ALJ and the Appeals Council
    “are not bound by LCDs, . . . but will give substantial
    deference to these policies if they are applicable to a
    particular case.” Id. § 405.1062(a). By pursuing this appeals
    process, KCI could obtain a case-specific review as to
    whether the particular use of NPWT was “reasonable and
    necessary” for the treatment of the wound. 42 U.S.C.
    § 1395y(a)(1)(A).
    In late 2002, KCI sent a formal letter to the DME MACs,
    seeking clarification of several issues concerning the
    application of the LCDs. One of these issues concerned the
    handling of what the parties have referred to as “stalled
    cycles,” i.e., a month in which VAC Therapy was used but
    there was no wound improvement. Specifically, KCI asked
    whether, if the month after a stalled cycle shows “significant
    healing, should we submit a claim for both cycles?” In June
    2003, the four DME MACs sent a joint responsive letter to
    KCI. On the issue of stalled cycles, the DME MACs
    responded in relevant part as follows (emphasis added):
    Lack of improvement in one cycle of use (i.e.,
    a month) would not justify coverage of
    NPWT for the months following the month in
    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS              9
    which improvement is lacking[]. Even
    should the carrier make a payment,
    subsequent post-payment audit could result
    in an overpayment assessment for that month.
    Lack of improvement in one cycle of use (i.e.,
    a month) would not justify continued
    coverage of NPWT for any month after
    which wound healing progress is lacking,
    according to the [LCD] coverage criteria. If
    this cessation of healing occurs within the
    first 4 months of therapy, then the claim for
    the month of use after which healing ceased,
    must be submitted without the KX modifier.
    The substance of this position was also communicated by
    memorandum to the DME MACs’ personnel handling
    “Medical Review, Appeals.” On September 12, 2003, the
    DME MAC for “Region D” issued a bulletin confirming
    that, if there is a stalled cycle, “there will be no further
    coverage” of NPWT for that wound, even if “subsequent
    improvement occurs,” and “the KX modifier must not be
    added to claims for any subsequent months for use of the
    pump on that particular wound.”
    Within a few days of the issuance of this bulletin, KCI
    temporarily stopped seeking reimbursement for stalled-cycle
    claims. In a September 26, 2003 letter to the DME MAC for
    Region D, KCI took issue with the bulletin’s seemingly
    blanket prohibition on paying any claims after a stalled
    cycle. KCI explained that, in its view, there were many
    situations in which use of NPWT would be medically
    necessary after a stalled cycle and that it believed “that these
    situations should be reviewed on a case-by-case basis.”
    KCI’s letter did not specifically address the bulletin’s
    prohibition on using the KX modifier in such situations. In
    10    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS
    a subsequent October 14, 2003 phone call between KCI and
    the Region D Medical Director, the Director assertedly
    agreed that “criteria could be established to determine” when
    use of NPWT would be “medically necessary” after a stalled
    cycle, and that the recent bulletin should be retracted.
    In an October 24, 2003 letter to the DME MACs, KCI
    provided its formal response to the June 2003 letter. On the
    issue of stalled cycles, KCI reiterated its objection to the
    DME MACs’ apparent position that, if there is a stalled
    cycle, “medical necessity could never be established without
    complete healing.” KCI noted that, in a separate LCD
    governing a different wound therapy (known as “Pressure
    Reducing Support Surfaces”), there was a recognition that,
    even if there was an apparent stall in healing, “continued
    medical necessity can be established as long as there is
    documentation to show that ‘other aspects of the care plan
    are being modified to promote healing.’” KCI took the
    position that “the coverage guidelines in the support surface
    [LCDs] should also be applied to NPWT.” The letter did not
    say anything about the use of the “KX” modifier.
    Shortly thereafter, the KCI staff decided to resume
    billing for stalled-cycle claims under what KCI later termed
    a “risk sharing” approach: “If one cycle does not improve[,]
    i.e., wound healing stalled, OK to bill that cycle. If the next
    cycle does not improve, KCI will NOT bill and VAC will be
    picked up.” As part of this approach, KCI resumed affixing
    the KX modifiers to its claims where a stalled cycle was
    followed by a month of wound improvement. In a
    subsequent, January 30, 2004 letter to the DME MACs, KCI
    again pointed to the analogy to the “Support Surface” LCD
    and took the position that, “[i]f healing resumes” after a
    stalled cycle, KCI “request[ed] that coverage be approved
    for both cycles.” KCI argued, for example, that payment
    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS          11
    should be made when a stalled cycle resulted from
    “debridement”—a medical treatment in which a wound is
    cleaned and dead or damaged tissue is removed—because
    debridement may cause a temporary expansion in the size of
    a wound that is otherwise healing properly and that would
    benefit from VAC Therapy. This letter likewise did not
    mention the use of the “KX” modifier.
    In early January 2004, a KCI billing employee raised
    concerns about the stalled-cycle billing practice, asking
    billing company president Deb Smith in an email whether,
    in light of a regional DME MAC bulletin comparable to the
    one discussed above, “it would be fraudulent to submit a bill
    that is different from what they indicate in this bulletin.”
    Smith forwarded the email to Human Resources Manager
    Bob Curlee, who echoed the employee’s concerns:
    This sounds like an excellent employee has
    identified the real possibility that Medicare
    policy is being violated and fraud committed
    and wants to know if she should continue
    training her staff to continue doing so. Does
    challenging the policy actually get us off the
    hook when crunch time comes? You don’t
    play a game assuming the rules may change
    the score when you challenge it at the end.
    You play by the rules you have while trying
    to get the rules changed for the future. Just
    my thoughts and I don’t know this stuff very
    well, but I can tell when something is right or
    wrong.
    Nevertheless, KCI continued the practice of billing for
    stalled-cycle claims, reiterating its “risk-sharing” approach
    in a February 2004 internal memorandum. Specifically, that
    12    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS
    memorandum stated that, in the event of a stalled cycle, the
    claim would “be held pending [the] outcome of the
    subsequent cycle,” and if that cycle showed significant
    improvement, “both cycles will be billed.”               The
    memorandum, however, did not specifically address
    whether, in billing such a set of cycles, the KX modifier
    should be used. KCI’s billing department subsequently
    raised the question whether the KX modifier could be used
    in such circumstances, and that question was answered in a
    March 2004 email from KCI’s Vice President for
    Reimbursement Policy and Compliance. Concluding that
    there were “inconsistencies in the positions taken by the
    [DME MACs] on this point,” she stated that “KCI has made
    the decision” that, if “the subsequent cycle” after a stalled
    cycle “shows significant progress, both cycles will be billed
    using the ZX [i.e., KX] modifier.”
    KCI continued its discussions with the DME MACs over
    the treatment of stalled cycles, and in April 2004 it
    forwarded to the DME MACs its February 2004 internal
    memorandum discussing KCI’s approach.                   That
    memorandum, as noted earlier, did not explicitly mention the
    use of the KX modifier, but KCI’s subsequent
    communications with the DME MACs in 2004 did raise that
    issue and also suggested formal amendment of the LCDs. In
    particular, a June 23, 2004 KCI email to one of the regional
    DME MACs stated that, “[m]oving forward,” KCI would
    hold claims for a single stalled cycle and then, “[i]f the
    subsequent cycle shows significant progress, [KCI] will
    submit claims for both cycles will [sic] the KX modifier.”
    The DME MACs and KCI appeared close to an
    agreement in August 2004, when a DME MAC medical
    director circulated an email stating that the DME MACs
    were “planning to accept [KCI’s] concept of a ‘stalled’
    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS            13
    healing cycle, paying for the stalled month and the
    subsequent month only if the subsequent month shows
    improvement compared to the month before the stalled
    month.” Subsequent discussions between KCI and the DME
    MACs included proposals to amend or clarify the LCDs to
    expressly allow use of the KX modifier in the event of a
    stalled cycle, at least where the stalled cycle was due to
    debridement. But the negotiations slowed towards the end
    of 2004, and ultimately no relevant formal amendment was
    ever made to the LCDs during the pertinent timeframe. As
    one of the regional DME MAC directors stated at his 2018
    deposition, the parties “would get close” in the discussions,
    but then the DME MACs “would back away.” He
    summarized the overall negotiations by stating that, “after
    all the years of discussion, we ultimately found all the points
    unconvincing and made no change in the policy.”
    In certain internal communications, however, KCI
    operated on the assumption that it had an agreement “in
    principle” with the DME MACs, even while acknowledging
    that the LCDs had not been amended. For example, in one
    internal email addressed to KCI’s General Counsel, the
    author—who is the relator in this case—explained KCI’s
    professed belief that the DME MACs had “bought into this
    concept” of billing for stalled cycles that were followed by
    improvement, but he cautioned that there was “risk”
    “because our billing practice does not comply with this part
    of the medical policy and we could be subject to recoupment
    of very significant amounts of money if the policy were to
    be strictly interpreted.”
    In September 2010, the four DME MAC directors held a
    conference call to discuss KCI’s billing practices. The
    contemporaneous notes of one of the directors described as
    14    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS
    follows the directors’ then-current understanding of the
    issues concerning KCI’s billing of stalled cycles:
    o Literal reading of policy says not to
    use KX if wound size increases
    o KCI will hold claim for stalled
    month and if next month improves,
    will bill stalled month with KX
    o KCI does this based on discussions
    in 2003 and 2004; however, no
    action was taken by [DME MACs] in
    policy to memorialize decisions
    o Action: Take no action immediately
    to address KCI’s stalled billing.
    Longer-term action to revise policy
    once [DME MACs] decide what
    needs to be done with multiple policy
    issues . . . .
    B
    Relator Steven Hartpence worked at KCI from 2001 until
    2007, first as Vice President and then as Senior Vice
    President of Business Systems. On March 20, 2008,
    Hartpence filed this FCA qui tam action on behalf of the
    United States. In his operative Third Amended Complaint,
    Hartpence alleges, inter alia, that KCI’s so-called “risk-
    sharing” approach to billing stalled-cycle claims violated the
    FCA because KCI affixed the KX and ZX modifiers to
    claims that did not actually satisfy all coverage requirements
    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS                   15
    under the LCDs. 4 On April 27, 2011, the United States
    declined to intervene.
    Hartpence’s FCA suit was initially dismissed by the
    district court on the ground that the FCA’s “public
    disclosure” bar on certain qui tam actions deprived the court
    of subject matter jurisdiction. See United States ex rel.
    Hartpence v. Kinetic Concepts, Inc., 
    792 F.3d 1121
    , 1123
    (9th Cir. 2015) (en banc) (explaining that “[t]he public
    disclosure bar precludes qui tam suits where there has been
    a public disclosure of the fraud, unless the relator qualifies
    as an ‘original source’ of the information” (quoting
    
    31 U.S.C. § 3730
    (e)(4)). Sitting en banc, we overruled the
    precedent on which the district court had relied in applying
    the public-disclosure bar, and we remanded the case for
    reconsideration. 
    Id. at 1123
    , 1129–30 (overruling Wang ex
    rel. United States v. FMC Corp., 
    975 F.2d 1412
     (9th Cir.
    1992), to the extent that it held that a relator qualifies as an
    “original source” only if he or she “had a ‘hand in the public
    disclosure’ of the fraud” (quoting Wang, 
    975 F.2d at 1418
    )).
    On remand, the district court held that the public disclosure
    bar did not apply to Hartpence’s qui tam action. No party
    challenges that ruling on appeal.
    After substantial discovery, KCI moved for summary
    judgment in January 2019 on the ground that Hartpence
    could not carry his burden of proof with respect to several
    elements of his FCA claims. Specifically, KCI argued that
    4
    Hartpence also asserted below that KCI violated the FCA in several
    additional respects, but in his opening brief on appeal, he has not
    challenged the district court’s grant of summary judgment rejecting those
    additional theories. Accordingly, any such further FCA theories have
    been forfeited, see EEOC v. Peabody Western Coal Co., 
    773 F.3d 977
    ,
    990 (9th Cir. 2014), and the only FCA claims remaining in this case are
    those arising from KCI’s billing of stalled-cycle claims for payment.
    16    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS
    Hartpence lacked sufficient evidence as to the materiality
    and falsity of KCI’s claims for payment and as to whether
    KCI “knew or recklessly disregarded that such claims were
    false.” The district court granted this motion in June 2019,
    concluding that Hartpence had “failed to create a triable
    issue as to materiality and scienter with respect to each type
    of false claim he has identified.” The district court held that,
    as a matter of law, any use by KCI of the KX modifier to
    falsely certify compliance with LCD criteria that had not
    actually been met was not material to the Government’s
    ultimate payment decisions. The district court also held that
    Hartpence had failed to present sufficient evidence that KCI
    acted with the requisite scienter.
    We have jurisdiction under 
    28 U.S.C. § 1291
    , and we
    review the district court’s grant of summary judgment de
    novo, see Protect Our Communities Found. v. LaCounte,
    
    939 F.3d 1029
    , 1034 (9th Cir. 2019).
    II
    To establish a cause of action alleging liability for a false
    claim under 
    31 U.S.C. § 3729
    (a)(1)(A), “the United States
    or [the] relator must prove the following elements: (1) a false
    or fraudulent claim (2) that was material to the decision-
    making process (3) which defendant presented, or caused to
    be presented, to the United States for payment or approval
    (4) with knowledge that the claim was false or fraudulent.”
    United States ex rel. Hooper v. Lockheed Martin Corp.,
    
    688 F.3d 1037
    , 1047 (9th Cir. 2012) (emphasis added).
    Thus, although § 3729(a)(1)(A) does not itself use the term
    “material,” its reference to a “false or fraudulent claim” must
    be understood in light of the common-law understanding of
    fraud, which included a materiality requirement. Universal
    Health Servs., Inc. v. United States ex rel. Escobar, 
    579 U.S. 176
    , 193 (2016). For similar reasons, it does not matter
    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS             17
    whether § 3729(a)(1)(A)’s lack of the word “material”
    arguably renders the FCA’s express definition of “material”
    inapplicable to that provision. See 
    31 U.S.C. § 3729
    (b)(4)
    (defining “material,” “[f]or purposes of this section,” as
    “having a natural tendency to influence, or be capable of
    influencing, the payment or receipt of money or property”).
    Regardless of “whether § 3729(a)(1)(A)’s materiality
    requirement is governed by § 3729(b)(4) or derived directly
    from the common law,” the substance of that standard is
    essentially the same. Escobar, 579 U.S. at 193. Materiality
    “looks to the effect on the likely or actual behavior of the
    recipient of the alleged misrepresentation.” Id. (simplified).
    In the context of a false certification of compliance with
    a regulatory or statutory requirement for payment, the
    certification is material if the requirement is “‘so central’ to
    the claims that the government ‘would not have paid these
    claims had it known’” that the requirement was not satisfied.
    United States ex rel. Winter v. Gardens Reg’l Hosp. & Med.
    Ctr., Inc., 
    953 F.3d 1108
    , 1121 (9th Cir. 2020) (quoting
    Escobar, 579 U.S. at 196). Applying that standard, we hold
    that the district court erred in granting summary judgment.
    On this record, there was a genuine issue of material fact as
    to whether the use of the KX modifier—which indicated
    compliance with the requirements of the LCDs—was
    material to the reimbursement claims. See Celotex Corp. v.
    Catrett, 
    477 U.S. 317
    , 322 (1986).
    A
    As noted earlier, one of the DME MAC directors
    explained in his deposition that, if the KX modifier is used
    in a claim when it is submitted, then “the system is set up to
    pay that claim.” A KCI official likewise testified that the
    general purpose of the KX modifier “was to trigger an
    automatic payment.” That understanding of the KX
    18    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS
    modifier is unsurprising, given the place of LCDs in the
    payment system created by the Medicare Act. As noted
    earlier, the whole point of the LCD system that Congress
    authorized is to allow a DME MAC to make payments, on a
    DME MAC-wide basis and without further consideration of
    individual circumstances, when certain specific criteria are
    present. See supra at 6. By contrast, omitting the KX
    modifier would trigger a denial of the claim and the need to
    pursue a case-specific review of medical necessity on
    appeal. Given this pivotal practical role played by the use of
    the KX modifier, a reasonable trier of fact could readily
    conclude that the presence or absence of that modifier is
    “material” to the payment decision. That is, given the above-
    described structure of the coverage determination system, it
    would be reasonable to conclude that the Government
    attaches importance, in making a payment decision, to a
    provider’s certification of compliance with the relevant
    criteria of the applicable LCDs. That inference is further
    supported by KCI’s own practice of persisting in using the
    KX modifier to ensure prompt payment of stalled-cycle
    claims despite its knowledge that those claims did not satisfy
    the literal terms of the LCDs. Accordingly, unless the
    summary judgment record contains undisputed evidence that
    would refute such an inference, summary judgment for KCI
    would be inappropriate because a rational jury could find,
    consistent with Escobar, that the use of the KX modifier was
    material to the payment of stalled-cycle claims. See 579
    U.S. at 193.
    In rejecting such an inference of materiality, the district
    court concluded that use of the KX modifier did not mean
    that KCI would be paid automatically, because the audit
    evidence in the record revealed that some claims submitted
    with that modifier were ultimately not paid. This reasoning
    does not support a conclusion that, as a matter of law, the
    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS            19
    KX modifier was not material. The vast majority of claims
    with the KX modifier were not subjected to such audits, and
    payment of those claims effectively was automatic given
    KCI’s use of the modifier to confirm compliance with the
    LCDs. The fact that the KX modifier was not accepted at
    face value in case-specific auditing does not mean that
    compliance with the LCD criteria (which is what use of the
    modifier is supposed to signify) was not material to most
    payment decisions.
    B
    We agree, however, that compliance with the specific
    LCD criterion that there be no stalled cycle would not be
    material if, upon case-specific review, the Government
    routinely paid stalled-cycle claims. See Escobar, 579 U.S.
    at 195–96. In other words, if stalled-cycle claims were
    consistently paid when subject to case-specific scrutiny, then
    a false statement that avoids that scrutiny and instead results
    in automatic payment would not be material to the payment
    decision. But the record does not show this to be the case,
    particularly when the record is considered—as it must be—
    in the light most favorable to the relator. Anderson v. Liberty
    Lobby, Inc., 
    477 U.S. 242
    , 255 (1986). The record evidence
    concerning case-specific review of stalled-cycle claims
    takes three main forms—administrative rulings concerning
    claims that were initially denied, post-payment and pre-
    payment audits of particular claims, and a 2007 report by the
    Office of Inspector General (“OIG”) of the U.S. Department
    of Health and Human Services. None of them supports the
    district court’s summary judgment ruling.
    1
    The record includes a substantial number of
    administrative decisions in which KCI appealed denials of
    20       U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS
    payments for claims that included stalled cycles. 5 The
    picture that emerges from a consideration of these
    administrative rulings is that there was no per se rule one
    way or the other as to payment of stalled-cycle claims. Such
    claims were paid only if case-specific circumstances
    demonstrated that the treatment was reasonable and
    necessary in a particular instance. Thus, although the record
    contains several instances in which, upon further case-
    specific review, an ALJ authorized payment of particular
    claims involving a stalled cycle, the Government did not
    follow KCI’s risk-sharing approach either. Rather than
    follow KCI’s preferred bright-line rule, the agency took a
    closer look at the totality of the circumstances in determining
    medical necessity and deciding whether or not to pay stalled-
    cycle claims. As a result, case-specific review of stalled-
    5
    The evidence indicates that there were at least two ways in which
    such an appeal involving a stalled-cycle claim might occur. First, as one
    KCI employee explained in an email, a “major driver” of stalled-cycle
    denials occurred when a claim was examined by the DME MAC on other
    grounds—such as failure to comply with the LCDs’ separate rule against
    paying for more than four cycles of NPWT treatment—and the stalled
    cycle would then be discovered in the resulting review. Although the
    record is not entirely clear on the point, it may well be that, in such cases,
    the KX modifier was not used in submitting such claims due to the failure
    to meet the generally applicable four-cycle cap. Indeed, the submission
    of a fifth claim for the same patient is presumably readily detectable by
    the DME MAC and it is therefore unsurprising that a KCI billing
    employee explained that, rather than use the normal electronic system of
    claims submission, KCI submitted “paper bills to Medicare for claims
    for patients whose treatment progressed to a fifth cycle or more.”
    Second, the record indicates that some stalled-cycle claims submitted
    with the KX modifier were included among KCI claims that were
    selected for a pre-payment review or audit. As a result, the pool of
    administrative decisions presumably contains some claims in which the
    KX modifier was used and some in which it was not. The administrative
    decisions themselves, however, are generally silent as to whether the KX
    modifier was used in any given case.
    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS           21
    cycle claims was a hit-or-miss proposition—meaning that
    KCI’s false use of the KX modifier to obtain automatic
    payment avoided a scrutiny that it sometimes lost.
    In 2009, the Medicare Appeals Council—“which is the
    highest level of agency adjudication” on these matters, see
    Int’l Rehab. Sciences Inc. v. Sebelius, 
    688 F.3d 994
    , 996 (9th
    Cir. 2012)—reviewed KCI’s appeals of 64 VAC Therapy
    claims from all four regions and rejected payment for all of
    them. In that decision, the Appeals Council squarely
    addressed KCI’s argument that “Medicare should cover
    cases where there has been no measurable wound healing”—
    i.e., a stalled-cycle—“because the wound has undergone
    debridement.” The Appeals Council rejected that argument
    and instead upheld the ALJ’s “strict adherence to the terms”
    of the LCDs. The Appeals Council acknowledged that
    medical necessity for use of the VAC Therapy might
    nonetheless be shown even when debridement caused a
    stalled-cycle that resulted in a failure to satisfy the LCDs.
    But the Council held that that would be true “[o]nly if facts
    established through documentation show that a debridement
    is of such an unusual and unpredictable nature or generates
    unanticipated medical complications.” Because KCI failed
    to establish such facts, the Appeals Council denied all 64 of
    these claims.
    Although the record contains a few favorable case-
    specific determinations in cases in which KCI challenged
    initial denials of payment before ALJs, these rulings do not
    establish that the presence of a stalled cycle is immaterial,
    but only that it is not always dispositive. At best, these
    decisions—which, being from the “low levels of the agency
    adjudication process,” are less significant, see Int’l Rehab.
    Sciences, 688 F.3d at 996—show only that ALJs sometimes
    22       U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS
    authorized payment based on particular case-specific factors
    that justified payment despite the presence of a stalled cycle.
    For example, a June 2011 ALJ decision allowed payment
    of several claims involving allegedly stalled cycles. After
    first concluding that some of the cases did comply with the
    LCDs (because there was in fact a “reduction in the wound
    surface area”), the ALJ found that medical necessity had
    been established in the remaining cases based on “sufficient
    documentation” in the respective case files, either in the
    form of physician prescriptions or a “Letter of Medical
    Necessity.” A November 2010 ALJ decision comparably
    allowed payment only because the “medical record” for the
    particular patient “show[ed] sufficient documentation” from
    the treating physician “to support medical need” for the
    VAC Therapy. Notably, this decision states that the “mere
    occurrence of a debridement does not excuse” compliance
    with the LCD’s “progressive healing” requirement
    (emphasis added). Two April 2005 decisions (both from the
    same ALJ) made the converse point that the mere occurrence
    of debridement does not necessarily mean that “the wound
    failed to show improvement” (emphasis added). 6 Rather, the
    ALJ concluded, whether the wound has improved requires
    “consideration of the clinical evidence in the case record for
    each beneficiary.” Likewise, a September 2005 ALJ ruling
    recognized that payment might be warranted, upon
    individualized consideration, if a case involved a “brief
    ‘stall’ within the context of good overall improvement.”
    6
    Other decisions, such as ALJ decisions from August 2006, April
    2008, and May 2008, similarly made the point that a debridement that
    temporarily increased wound size would promote wound healing and did
    not necessarily mean that further use of VAC Therapy was unwarranted.
    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS           23
    Taken together, these various decisions reaffirm the
    LCD requirements, while recognizing that, under the
    circumstances of a given case, medical necessity might or
    might not still be shown. But KCI’s success in prevailing in
    particular instances of case-specific review does not show
    that failure to comply with the LCD—or using the KX
    modifier to falsely state such compliance and thereby avoid
    individualized review—was immaterial.
    Moreover, the record contains additional ALJ decisions
    which further support an inference that compliance with the
    LCDs was material. For example, in a January 2007
    decision, an ALJ upheld and applied the general rule that
    when multiple claims are considered at once, “the absence
    of measurable healing during the first cycle precludes
    coverage for any of the subsequent months” (emphasis in
    original). Using reasoning similar to the earlier-described
    Appeals Council ruling, the ALJ stated that, when the failure
    to satisfy the LCD was due to debridement, continued use of
    the VAC Therapy might be medically reasonable and
    necessary if the debridement was “of such an unusual and
    unpredictable nature, or generate[d] such unanticipated
    medical complications, as to justify the continuation of
    NPWT despite the lack of measurable healing.” However,
    the ALJ found that in the record before it, no such
    extraordinary circumstances had been shown, and KCI’s
    requests for payment were denied.
    In short, there is no basis for concluding that the subset
    of ALJ decisions that were favorable are representative of
    the “mine run” of cases. Escobar, 579 U.S. at 195. Indeed,
    an ALJ decision would only be rendered in those cases that
    KCI specifically chose to appeal—which were likely closer
    cases or claims with extenuating factors weighing in favor
    of reimbursement. A KCI senior manager stated in a 2009
    24    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS
    email that, at least as of September 2007, “the directive [KCI
    employees] got was don’t take anything [to appeal] we know
    we can’t win.” Because KCI was being selective in choosing
    which claims to appeal, it is reasonable to infer that it had a
    greater success rate in those appeals than it would have had
    if it had appealed all denials in cases involving stalled-cycle
    claims.
    2
    A post-payment audit conducted in Region D supports
    the same conclusion that emerges from the administrative
    rulings—viz., that case-specific reviews sometimes did, and
    sometimes did not, reveal sufficient justification for
    payment of claims that did not strictly meet the LCD criteria.
    In 2007, one of the DME MACs—known as Region D—
    conducted a post-payment audit of VAC Therapy claims.
    According to the declaration of a KCI employee, the audit
    revealed that, of 241 claims submitted and reviewed, there
    were 19 “instances in which KCI submitted claims to the
    Region D [DME MAC] using the KX modifier where the
    wound’s healing stalled for a cycle followed by a cycle of
    resumed improvement.” Of those 19 claims, auditors
    approved 14 for payment and denied the remaining five
    “because the auditors found insufficient medical records
    supporting continued VAC Therapy.” The declaration
    indicates, however, that the five denials were not based
    simply on a failure to comply with the LCD but on a
    consideration of “all of the medical records KCI submitted
    for [each] patient.” Once again, the hit-or-miss nature of
    case-specific review supports an inference that falsely using
    the KX modifier to avoid such a review, and to instead be
    paid automatically, is material to the Government’s payment
    decision. Indeed, an audit in which five of 19 stalled-cycle
    claims are denied—more than 25 percent—confirms the
    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS          25
    materiality of using a code that typically would evade such
    a case-specific review.
    KCI also points to a pre-payment audit of VAC Therapy
    claims that was conducted by the DME MAC for Region B
    from 2007 until 2008. A KCI manager’s declaration
    subsequently stated, in conclusory fashion, that she believed
    there were no claims denied in this audit on the basis of a
    stalled cycle. But even if some stalled-cycle claims were
    upheld when specifically examined in this audit, that does
    not establish, as a matter of law, that all such claims were
    paid or even that the mine run of such claims were paid.
    3
    Finally, the OIG’s 2007 audit report also supports an
    inference that the false use of the KX modifier was material.
    The OIG report noted that nearly 21 percent of wound-
    therapy-pump claims lacked sufficient—or any—supporting
    documentation and that an additional three percent were “not
    medically necessary,” mostly because they “did not have a
    measurable degree of healing over the past month.” These
    results affirmatively support the view that falsely using the
    KX modifier to escape case-specific review was material.
    Indeed, the OIG report specifically noted that “[c]laims that
    do not have the KX modifier are automatically flagged for
    possible review” (emphasis added).
    *      *       *
    26       U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS
    Accordingly, we conclude that the district court erred in
    holding that, as a matter of law, KCI’s false certification of
    compliance with the LCDs was not material. 7
    III
    The district court further erred in holding that there was
    insufficient evidence that KCI acted with the requisite
    scienter. 8
    A
    As an initial matter, the district court held that, because
    the use of the KX modifier on stalled-cycle claims was not
    material, evidence that KCI knew that it was wrongly using
    the KX modifier is insufficient to establish scienter. Because
    the district court’s premise concerning materiality was
    wrong, the resulting conclusion that it drew as to scienter is
    necessarily vitiated.
    7
    In addition to the prohibition on presentation of false claims in
    § 3729(a)(1)(A), the FCA contains an alternative prohibition on
    knowingly making “a false record or statement material to a false or
    fraudulent claim.” See 
    31 U.S.C. § 3729
    (a)(1)(B). To the extent that the
    relator here also relies on that provision, the analysis as to materiality
    under that clause in this case is, so to speak, not materially different.
    8
    We reject KCI’s contention that Hartpence forfeited this issue by
    supposedly failing to raise it adequately in the opening brief. Although
    the brief would have benefited from a distinct subsection expressly
    devoted to this issue, the brief as a whole makes sufficiently clear that
    Hartpence contends, contrary to the district court’s ruling, that KCI well
    knew that it was making false statements about facts material to
    payment. That is especially true given that, as we explain, see infra
    at 26–28, the district court’s erroneous scienter ruling was largely
    predicated on its erroneous materiality ruling.
    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS            27
    The district court quoted Escobar, 579 U.S. at 181, for
    the proposition that the FCA’s scienter requirement turns on
    “whether the defendant knowingly violated a requirement
    that the defendant knows is material to the Government’s
    payment decision.” Although Escobar was concerned
    primarily with materiality and addressed scienter only in
    passing, the district court apparently construed the quoted
    language as suggesting that liability requires not only
    knowledge that a representation was false but also
    knowledge that the representation was material. See id. We
    need not decide whether this assumption was correct. Even
    assuming that Escobar requires knowledge of materiality as
    well as knowledge of falsity, the record in this case
    establishes a triable issue regarding KCI’s knowledge of the
    materiality of its misuse of the KX modifier.
    KCI was plainly aware that using the KX modifier
    avoided a costly review and appeals process that it would
    sometimes win and sometimes lose. In particular, emails
    from a KCI senior manager confirm KCI’s awareness of the
    risks of losing stalled-cycle claims in a case-specific review.
    For example, noting that the LCDs generally limited NPWT
    treatment to four monthly cycles, this senior manager
    explained that KCI “[h]istorically” did not appeal denials of
    a “fifth cycle” if KCI’s review disclosed that there was also
    a stalled-cycle in one of the first four months. As she
    explained, “[w]e have found that if we were to have pursued
    cycle 5 in appeal and there was a stalled cycle previously,
    Medicare would recoup their money up to and including the
    stalled cycle.” In another email, she also explained that
    KCI’s “mindset at that time (2006) was that we were pushing
    the envelope with policy,” and that, after several years of
    appealing reimbursement denials, KCI was “able to see what
    really was going to be paid and what would be denied.
    Stalled cycles . . . were [a] large denial area[].”
    28    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS
    More generally, a reasonable jury could conclude that
    KCI’s deliberate insistence on using the KX modifier when
    it knew that the LCD was not met was driven precisely by
    its desire to be paid promptly and without the hassle and
    risks of case-specific review. That further confirms that a
    rational trier of fact could find that KCI knew that its misuse
    of the KX modifier was material to payment.
    B
    Beyond its threshold error in predicating its scienter
    analysis on its erroneous materiality ruling, the remainder of
    the district court’s reasoning concerning scienter rests on a
    clear failure to view the evidence in the light most favorable
    to the relator. To satisfy the scienter requirement, relators
    must allege “a false statement or course of conduct made
    knowingly and intentionally.” United States ex rel. Campie
    v. Gilead Sciences, Inc., 
    862 F.3d 890
    , 904 (9th Cir. 2017).
    “Innocent mistakes, mere negligent misrepresentations and
    differences in interpretations are not false certifications
    under the Act.” United States ex rel. Hopper v. Anton, 
    91 F.3d 1261
    , 1267 (9th Cir. 1996). Under the statute, a false
    statement or false claim is knowingly made by a person if
    that person has actual knowledge of the falsity or if that
    person acts in deliberate ignorance or reckless disregard of
    its truth or falsity. See 
    31 U.S.C. § 3729
    (b)(1)(A). “[P]roof
    of specific intent to defraud” is not required.            
    Id.
    § 3729(b)(1)(B). Here, there is ample evidence to permit a
    rational trier of fact to conclude that KCI knew that it was a
    false statement to attach the KX modifier to a claim that did
    not satisfy the LCD and that KCI did so knowing that it
    might thereby escape case-specific scrutiny that, in many
    cases, it would lose.
    For example, the record contains an email from a billing
    employee who, after reading the relevant DME MAC
    U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS             29
    guidance, expressed serious concerns to higher management
    that the “policy instructions” she had been given concerning
    the use of the KX modifier in billing for stalled cycles
    “contradict” that guidance. See supra at 11. She specifically
    raised the question whether “it would be fraudulent to submit
    a bill” that does not follow the DME MAC’s instructions
    concerning the use of the KX modifier. The record also
    contains an email from a KCI employee who worked on
    appeals of denied claims, and she explained that, after
    experiencing adverse rulings on many claims, KCI had
    become more cautious about what it did and did not appeal.
    As noted earlier, she specifically identified “[s]talled cycles”
    as one of the “large denial areas.” Together with the other
    abundant evidence in the record that KCI followed an
    intentional policy to use the KX modifier on claims that did
    not meet the LCDs’ requirements, such evidence supports a
    reasonable inference that KCI did so to avoid case-specific
    scrutiny that, often enough, it would lose.
    In discounting this evidence, the district court relied on
    either (1) its view that knowledge of the “technical[]” falsity
    of KCI’s use of the KX modifier was immaterial and
    therefore “insufficient to establish scienter”; or (2) record
    evidence concerning KCI’s extensive discussions with the
    DME MACs concerning KCI’s objections to the LCDs and
    its intention to follow a “risk-sharing approach” to billing.
    See supra at 8–14. As to the first point, we have already
    explained that this reasoning rests on the district court’s
    flawed materiality ruling and falls with it. See supra at 26–
    28. As to the second, KCI certainly has a strong case to make
    to jurors as to why they should not draw the inferences that
    we have sketched out above. But KCI’s showing does not
    negate those reasonable inferences so as to establish that
    KCI is “entitled to judgment as a matter of law.” See FED.
    R. CIV. P. 56(a). In particular, even assuming that KCI
    30     U.S. EX REL. HARTPENCE V. KINETIC CONCEPTS
    communicated to the DME MACs its decision to adopt an
    overall approach to billing that did not follow the LCDs, that
    does not negate the reasonable inference that KCI knew that,
    in practice, its blanket misuse of the KX modifier effectively
    ensured near-automatic payment of claims that otherwise
    might not survive individualized scrutiny. And, in light of
    the internal communications discussed earlier, a reasonable
    jury could find that KCI knew that it did not actually have
    the DME MACs’ endorsement of its billing practices and
    that it decided to take a calculated risk that it could get away
    with bending the rules.
    IV
    KCI asks us to affirm the grant of summary judgment on
    the alternative ground that Hartpence’s theory of liability is
    contrary to Azar v. Allina Health Services, 
    139 S. Ct. 1804
    (2019). In Allina, the Court vacated a Medicare policy that
    altered hospital reimbursement rates, holding that the
    Government was required to provide opportunity for notice
    and comment before adopting that policy. 
    Id.
     at 1810–12.
    KCI argues that, under Allina, the LCDs at issue here may
    not validly serve as the basis for an FCA claim. We decline
    to reach this issue in the first instance on appeal. We leave
    it to the district court to address this issue if it is raised again
    on remand.
    V
    For the foregoing reasons, we reverse the district court’s
    grant of summary judgment and remand for further
    proceedings consistent with this opinion, including
    consideration of any remaining alternative arguments that
    KCI raised in its summary judgment motion.
    REVERSED and REMANDED.