Chehalis Children's Clinic, P.s. v. Washington State Health Care Authority ( 2018 )


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  •                                                                                             Filed
    Washington State
    Court of Appeals
    Division Two
    May 8, 2018
    IN THE COURT OF APPEALS OF THE STATE OF WASHINGTON
    DIVISION II
    CHEHALIS CHILDREN’S CLINIC, P.S.,                              No. 49569-4-II
    Appellant,
    v.
    WASHINGTON STATE HEALTH CARE                            UNPUBLISHED OPINION
    AUTHORITY,
    Respondent.
    WORSWICK, J. — The Washington Health Care Authority (Agency)1 overpaid Chehalis
    Children’s Clinic (Clinic) for services rendered to Medicaid patients. Chehalis appeals an order
    affirming the Washington State Health Care Authority Board of Appeals (Board) decision that
    equitable estoppel does not preclude the Agency from recovering the overpayment. The Clinic
    argues that some of the Board’s findings of fact are not supported by substantial evidence and
    that the Board improperly interpreted the law by concluding that the Clinic had not established
    all the elements of equitable estoppel by clear, cogent, and convincing evidence. We affirm the
    Board’s order because substantial evidence supports the challenged findings and because the
    Clinic failed to establish equitable estoppel.
    1
    The Health Care Authority (HCA) became the State’s designated state agency to administer
    the Medicaid program in 2011. RCW 71.04.050(2). Prior to 2011, the Department of Social and
    Health Services (DSHS) administered the Medicaid program. Because this case spans multiple
    years and involves references to both DSHS and the HCA, we use the term “Agency” when
    referring to either the HCA or DSHS.
    No. 49569-4-II
    FACTS
    I. BACKGROUND
    Congress provides federal funds to the States to provide medical services for needy
    citizens through Medicaid. In re Guardianship of Lamb, 
    173 Wn.2d 173
    , 186, 
    265 P.3d 876
    (2011). Participation in Medicaid is voluntary but, once a state elects to participate, it must
    comply with Medicaid statutes and related regulations. Samantha A. v. Dep’t of Soc. Servs. &
    Health Servs., 
    171 Wn.2d 623
    , 630, 
    256 P.3d 1138
     (2011). States design and administer their
    Medicaid programs within federal guidelines. Caritas Servs., Inc. v. Dep’t of Soc. & Health
    Servs., 
    123 Wn.2d 391
    , 396, 
    869 P.2d 28
     (1994). A description of a state’s implementation of
    federal guidelines must be submitted in a document known as a “State Medicaid [P]lan” to the
    federal Centers for Medicaid Services (CMS) for approval. 42 U.S.C. § 1396a(33); 
    42 C.F.R. § 403.304
    (b)(1). The Agency administers the Medicaid program in Washington. RCW 74.04.050;
    RCW 74.09.500.
    Each state’s plan establishes, among other things, a method for reimbursing health care
    providers, such as rural health clinics (RHCs). See 42 U.S.C. § 1396a(bb)(5)-(6). RHCs are
    clinics located in rural areas that engage in primarily outpatient or ambulatory care typically
    provided in a physician’s office or an outpatient clinic. All state plans must include a scheme for
    reimbursing RHCs for each encounter the clinics have with Medicaid recipients.2 See 42 U.S.C.
    § 1396a(bb)(5)-(6). An encounter is a face-to-face visit between an RHC provider and a
    recipient. Former WAC 388-549-1100 (2008).
    2
    Under federal law, RHCs also receive payment for services provided to Medicare recipients.
    However, this case only involves services provided by an RHC to Medicaid recipients.
    2
    No. 49569-4-II
    The RHC’s reimbursement structure under Medicaid is different than that of the standard
    medical office. See 42 U.S.C. § 1396a(bb)(6). Under the Medicaid program, reimbursement
    payments owed by the Agency to RHCs are assessed through what is known as the Prospective
    Payment System (PPS). Under this system, the Agency pays 100 percent of the average cost per
    each encounter of a Medicaid recipient. Additionally, RHCs can elect to be reimbursed through
    what is known as the alternative payment methodology (APM).3 This reimbursement method
    utilizes different, more recent data than the PPS, however, under the APM the Agency must still
    provide a payment to the RHCs which results in a payment at least equal to what the RHC would
    receive if using the PPS. 42 U.S.C. § 1396a(bb)(6)(B). In other words, under the APM, the
    Agency must still ensure that the RHCs receive at least 100 percent of the cost of each encounter.
    In Washington, RHCs may also contract with managed care organizations (MCOs) to
    provide services to Medicaid recipients. WAC 182-549-1100. Medicaid recipients enroll with
    an MCO to receive services from certain providers. After providing services to MCO enrollees,
    an RHC will submit a claim for payment for services directly to the MCOs. The MCOs then
    determine whether the services provided by the RHCs were appropriate and, if so, the MCO pays
    the RHC a contracted amount.
    Sometimes this contracted amount results in the RHC’s receiving less than the amount
    they would receive had they been paid directly from the Agency under the PPS or APM. When
    the MCO payment for an encounter is less than the encounter rate the RHC would receive under
    the PPS or APM, the Agency must make supplemental payments to the RHCs so that the total
    payment received by them is equal to the total amount they are entitled to receive under the PPS
    3
    For all times relevant in this case, the Clinic chose the APM.
    3
    No. 49569-4-II
    or APM. 118; 42 USC 1396a(bb)(5)(A)-(B). These supplemental payments are known as
    enhancement payments. WAC 182-549-1100.
    The Agency calculates enhancement payments based on documentation sent to it by the
    MCOs. The MCOs submit a roster of enrollees seen by an RHC to the Agency and the Agency
    pays the RHCs an enhancement payment for each enrollee on the list. Enhancement payments
    are interim in nature and are made throughout the year until a reconciliation of the payments can
    be completed.4 All RHCs are to be notified on an annual basis that a reconciliation will be
    conducted to compare what the RHCs actually received to what they should have received.
    In summary, the RHCs are entitled to two payments for each encounter, one payment
    from the MCO and one enhancement payment from the Agency to supplement the MCO
    payment if the MCO payment does not cover the entire cost of the encounter. These two
    payments allow the RHCs to receive a total amount that equals the amount the RHC would
    receive had the Agency paid the RHC directly under the PPS or APM.
    II. WASHINGTON’S ENHANCEMENT PAYMENT PROCESS
    After a federal audit in 2006, CMS found the Agency noncompliant with federal
    regulations regarding its enhancement payment method. Through the audit, CMS concluded that
    the Agency’s current enhancement payment methodology did not meet federal Medicaid
    requirements because the Agency could not prove that RHCs received a total amount “exactly
    4
    In finding of fact 8, the Board states that “RHCs receive enhancement payments from the
    Agency at the time the reconciliation occurs.” AR at 2-3. However this is an incorrect
    statement. The Board properly notes in finding of fact 19 that “[t]he monthly enhancement
    payment is the interim payment methodology used during the calendar year until reconciliation
    can be completed. Once reconciliation is completed, then a comparison is done between the
    payments with the enhancement payments, and what the payments would have been under the
    encounter rate.” AR at 7.
    4
    No. 49569-4-II
    equal” to what the RHCs should receive. Admin. Record (AR) at 120. CMS then required the
    Agency to develop a new methodology for making enhancement payments.
    In 2008, the Agency informed the RHCs about the Agency’s noncompliance and the plan
    to develop an updated enhancement payment process. In a letter to the RHCs, the Agency stated:
    . . . According to CMS, the PPS methodology currently used by the [Agency]
    requires that overall reimbursement for eligible managed care visits must be equal
    to the encounter rate paid for eligible fee-for-service visits. The overall
    reimbursement is comprised of payments from the managed care organizations
    (MCO) and the enhancement payments from the [Agency]. If the MCO payment
    for a particular visit is less than the encounter rate, the [Agency] is responsible for
    making an enhancement payment in order to bring the total reimbursement up to
    the level of your encounter rate.
    The CMS review of the enhancements found insufficient evidence that the
    [Agency]’s methodology for making the payments meets federal requirements.
    Specifically, the [Agency] was unable to demonstrate that the payments were
    exactly equal to the difference between the MCO payments and your encounter
    rate.
    AR at 120. The Agency also stated that it was developing a process for addressing
    overpayments and underpayments when they exist. As a result, the Agency drafted a state plan
    amendment that included a new enhancement payment and reconciliation process. The newly
    amended plan stated in part:
    To ensure that the appropriate amounts are being paid to each clinic, the State will
    perform an annual reconciliation and verify that the enhancement payments made
    in the previous year were in compliance with Section 1902(bb)(5)(A)[ of the SSA].
    The annual reconciliation will be done as follows:
    APM: (managed care encounters x APM encounter rate) less (fee-for-
    service equivalent) = State’s payment amount[.]
    5
    No. 49569-4-II
    AR 125. CMS approved the Agency’s amended state plan and it became effective in 2008.5
    In 2009, the Agency sent a letter to the RHCs notifying them of the new enhancement
    process and of the Agency’s expectation to complete a reconciliation of the 2009 enhancement
    payments in September 2010. The Agency also informed the RHCs that if the reconciliation
    showed that the Agency had overpaid the RHCs in enhancement payments, the RHCs would be
    responsible for repaying the overpaid amount.
    Shortly after the agency implemented the reconciliation process in 2009, a group of
    health clinics sued the Agency over the propriety of the reconciliation process. As a result, the
    Agency stayed the reconciliation process until the parties resolved the suit in October 2013.
    III. CHEHALIS CHILDREN’S CLINIC AND 2009 ENHANCEMENT PAYMENTS
    The Clinic is an RHC that provides health care services to low-income children in a rural
    area. In 2005, the Clinic signed a core provider agreement with the Agency. After it signed the
    agreement, the Clinic was subject to state and federal laws as well as Agency rules, regulations,
    memoranda, billing instructions, and other agency documents. The Clinic chose the APM
    payment methodology and contracted with the Agency to provide Medicaid funded services to
    Medicaid recipients. Under the APM, the Agency paid an encounter rate for each Medicaid
    recipient encounter directly to the Clinic. In addition to providing services to Medicaid
    recipients, the Clinic also contracted with an MCO to provide services to MCO enrollees. Thus,
    the Clinic was entitled to payments from the MCO, and also entitled to enhancement payments
    5
    Washington’s Medicaid (Title XIX) State Plan is available at: https://www.hca.wa.gov/about-
    hca/apple-health-medicaid/medicaid-title-xix-state-plan. The 2008 State Plan Amendment is
    available at: https://www.hca.wa.gov/assets/program/08-010_FQHC_RHC_Approval_Pkt_(6-
    26-09).pdf
    6
    No. 49569-4-II
    from the Agency when the MCO failed to provide the Clinic full payment for enrollee
    encounters.
    In 2009, the MCO submitted a roster to the Agency and, based on this roster, the Agency
    paid the Clinic estimated enhancement payments for each enrollee listed. When the Clinic
    received the payments, its billing specialist recorded them as “revenue” or as an “income item.”
    AR at 8.
    After a reconciliation of the 2009 enhancement payments, the Agency determined that it
    had overpaid the Clinic in the amount of $216,336. Because the Clinic chose to participate in the
    APM, which utilized different data, and because it took the Agency some time to implement the
    APM changes after the Clinic chose that methodology, the rate the Agency paid the Clinic for
    each client visit in the first six months of 2009 was different than the rate that the Agency paid
    the Clinic for the last six months of 2009. As a result, the Agency adjusted the Clinic’s debt by
    the difference between the two rates. Additionally, the state legislature inserted a provision in
    the operating budget for 2014 that forgave 65 percent of the 2009 overpayments made to RHCs.
    These combined actions reduced the Clinic’s overpayment responsibility to $74,634.
    In 2014, the Agency notified the Clinic of the final amount the Agency sought to recover.
    The Clinic did not reimburse the Agency but instead requested an administrative hearing to
    address the overpayment.
    IV. ADMINISTRATIVE HEARING
    An administrative law judge (ALJ) with the Office of Administrative Hearings held a
    hearing on the matter. The Clinic disputed the Agency’s calculation and further argued that even
    7
    No. 49569-4-II
    if the Agency had overpaid the Clinic, the Agency was precluded from collecting the
    overpayment under equitable estoppel as described in WAC 182-526-0495.6
    Several witnesses testified at the hearing. They included Sandra Cashman, a cost
    reimbursement analyst for the Agency; Lynn McCarty, a billing specialist for the Clinic; and
    Jenise Mugler, the Clinic’s general administrator.
    Cashman described the Agency’s authority to recoup overpayments. She also testified
    that the Agency performed an annual reconciliation of the enhancement payments and explained
    that the Agency paid enhancement payments “in addition” to the amounts paid by the MCOs for
    each encounter. 1 Report of Proceedings (RP) at 24. Cashman also described the enhancement
    payment process. She explained that the MCO submitted, to the Agency, a roster of the
    enrollees to whom the Clinic provided services. The Agency then paid the estimated
    6
    WAC 182-526-0495 provides:
    Equitable estoppel is a legal doctrine that may be used only as an affirmative defense
    to prevent the Agency from collecting an overpayment. WAC 182-526-0495. There are
    five elements of equitable estoppel and a party asserting the doctrine of equitable
    estoppel must prove all of the following five elements by clear and convincing evidence:
    (a) [The Agency] made a statement or took an action or failed to take an action,
    which is inconsistent with a later claim or position by [the Agency].
    (b) The party reasonably relied on [the Agency]’s original statement, action or
    failure to act.
    (c) The party will be injured to its detriment if [the Agency] is allowed to
    contradict the original statement, action or failure to act.
    (d) Equitable estoppel is needed to prevent a manifest injustice. Factors to be
    considered in determining whether a manifest injustice would occur include, but are
    not limited to, whether:
    (i) The party cannot afford to repay the money to [the Agency];
    (ii) The party gave [the Agency] timely and accurate information when required;
    (iii) The party did not know that [the Agency] made a mistake;
    (iv) The party is free from fault; and
    (v) The overpayment was caused solely by an [Agency] mistake.
    (e) The exercise of government functions is not impaired.
    8
    No. 49569-4-II
    enhancement payments to the Clinic for the same services provided to the enrollees on the roster.
    Cashman further testified that when an RHC is overpaid, the Agency recoups the amount that
    was overpaid, and if an RHC is underpaid, the Agency pays the RHC the difference.
    McCarty testified that the Clinic received enhancement payments from the Agency in
    2009. McCarty explained that she did not invoice the Agency for the enhancement payments
    and that upon receipt of enhancement payments, she did not take any action to reconcile the
    payments with the MCO payments. She also testified that she never recorded or classified any of
    the enhancement payments as “advanced” payments or as money that would have to be repaid to
    the Agency. AR at 8. McCarty further testified that she assumed that the enhancement
    payments were reconciled by the Agency.
    Mugler has worked at the Clinic for 22 years in various capacities. Mugler believed that
    enhancement payments were an additional source of “income” paid to the Clinic by the Agency
    in addition to the encounter payments. 1 Verbatim Report of Proceedings (VRP) at 61. Mugler
    further stated that if the Clinic had to repay the overpayment, the survivability of the clinic
    would be in question, and that the Clinic did not have $74,634 “sitting in a bank account.” AR at
    9. Mugler testified that it would be difficult for the Clinic to keep its doors open even if the
    Agency were to provide the Clinic with a repayment plan.
    After the hearing, the ALJ entered an order and concluded that the Clinic established all
    five elements of equitable estoppel by clear, cogent, and convincing evidence and therefore the
    Agency could not recoup the $74,634 overpayment. The Agency appealed the ALJ’s decision to
    the Health Care Authority Board of Appeals.
    9
    No. 49569-4-II
    V. HEALTH CARE AUTHORITY BOARD ADJUDICATION
    The Board reversed the ALJ’s decision and entered a final order that included specific
    findings of fact and conclusions of law. The Board found that the reconciliation process ensured
    that the RHCs were paid the appropriate amounts. The Board further found that the
    enhancement payments were interim payments made throughout the year until a reconciliation of
    the payments could be completed.
    The Board also found that the Agency notified the Clinic in 2008 via letter about the
    earlier federal audit and the Agency’s noncompliance with the enhancement process. The Board
    found that the Agency informed the RHCs that it was working to create a new enhancement
    payment methodology and reconciliation process because the previous process could not
    guarantee that the total amount received by the RHCs was “exactly equal” to the amount that the
    Clinic ought to receive for each encounter. AR at 5. The Board also found that the 2008 letter
    referred to the Agency’s expectation to reconcile future payments and develop a process to
    resolve underpayments and overpayments.
    The Board found that if the Agency determined through reconciliation that an RHC was
    overpaid, the Agency would recoup the overpaid amount and if an RHC was underpaid, the
    agency would pay the difference owed to the RHC. The Board additionally found that the
    Agency sent out many communications to the RHCs regarding the 2009 reconciliation.
    The Board also entered a number of conclusions of law. The Board concluded that the
    Clinic did not prove by clear, cogent, and convincing evidence that equitable estoppel applied to
    preclude the Agency from recouping any overpayment. Specifically, the Board determined that
    10
    No. 49569-4-II
    the Clinic failed to establish three of the five equitable estoppel elements—reasonable reliance,
    manifest injustice, and impairment of governmental functions.
    Regarding reasonable reliance, the Board found that the Clinic knew that it must comply
    with federal law and that the Agency informed the Clinic of the 2006 audit results and the
    requirement that the enhancement payments needed to be “exactly equal” to the difference
    between the encounter rate and the rate paid by the MCOs. AR at 18. The Board also found that
    the Agency informed the Clinic that it was developing a process for dealing with underpayments
    and overpayments. Based on these facts, the Board concluded that it was not reasonable for the
    Clinic to believe that it would not be subject to an enhancement payment reconciliation and that
    it was not reasonable for the Clinic to believe that enhancement payments were simply additional
    income given to it by the Agency.
    The Board further concluded that preventing the Agency from recouping the
    overpayment from the Clinic would impair government functions. The Board reasoned that
    government functions would be impaired if the Agency was precluded from recovering the
    overpayment from the Clinic because the Agency would be prevented from complying with
    federal Medicaid law and other related federal instructions.
    VI. APPEAL TO THE SUPERIOR COURT
    The Clinic appealed the Board’s decision to the superior court. The superior court
    affirmed the Board’s order and agreed that the Clinic did not establish all elements of equitable
    estoppel to preclude the Agency from recouping the overpayment. The Clinic now appeals.
    11
    No. 49569-4-II
    ANALYSIS
    The arguments in this case are unique because the Clinic asks us to resolve only the issue
    of equitable estoppel. The Clinic affirmatively states that it does not want us to determine the
    propriety of the Agency’s ability to seek recoupment for enhancement overpayments. Whether
    the Agency can seek recoupment is a threshold issue in this matter. Nonetheless, we accept the
    issue as presented by the Clinic, assume without deciding that the Agency can seek recoupment,
    and resolve the issue of equitable estoppel.7
    The Clinic argues that the Board incorrectly concluded that the Clinic failed to establish
    all elements of equitable estoppel by clear, cogent, and convincing evidence. The Clinic also
    asserts that a number of the Board’s findings of fact are not supported by substantial evidence or
    are improperly interpreted. The Clinic additionally claims it does not admit unchallenged
    findings or conclusions of law as verities on appeal. We affirm the Board’s order and hold that
    CCC did not meet its burden to show equitable estoppel.
    I. THE BOARD’S FINDINGS OF FACT
    The Clinic challenges five of the Board’s findings of fact, claiming that they are not
    supported by substantial evidence or that they are improper. The Clinic challenges the Board’s
    7
    The Clinic asserts that the “only issue on appeal is whether equitable estoppel precludes
    collection of the claimed overpayment.” Reply Br. at 1-2. However, the Clinic has assigned
    error to the Board’s conclusion that under federal law, the Agency has the legal authority to
    recoup the enhancement payment. The Clinic has also assigned error to the Board’s conclusion
    that expert testimony is not helpful when the case turns an issue of law. The Clinic makes no
    legal argument in support of these assignments of error, thus we do not address them, but instead
    consider the conclusions correct for purposes of this appeal. 12. RAP 10.3(a)(6), Satomi Owners
    Ass’n v. Satomi, LLC, 
    167 Wn.2d 781
    , 808, 
    225 P.3d 213
     (2009).
    12
    No. 49569-4-II
    findings of fact 8, 11, 12, 20, and 30. We hold that these findings are supported by substantial
    evidence.
    A.     Standard of Review
    Under the Washington Administrative Procedure Act, chapter 34.05 RCW, we directly
    review the Board’s decision based on the record before the agency to see whether substantial
    evidence supports the Board’s decision. Pilchuck Contractors, Inc. v. Dep’t of Labor & Indus.,
    
    170 Wn. App. 514
    , 517, 
    286 P.3d 383
     (2012). We view the evidence in the light most favorable
    to the party that prevailed before the highest forum that exercised fact-finding authority, here the
    Agency. Miotke v. Spokane County, 
    181 Wn. App. 369
    , 376, 
    325 P.3d 434
    , review denied, 
    181 Wn.2d 1010
     (2014). “Substantial evidence” is evidence in sufficient quantum to persuade a fair-
    minded person of the truth of the declared premises. Pilchuck Contractors, 170 Wn. App. at
    517. We do not reweigh the evidence. Harrison Mem’l Hosp. v. Gagnon, 
    110 Wn.App. 475
    ,
    485, 
    40 P.3d 1221
     (2002). Unchallenged findings of fact are verities on appeal. Mid Mountain
    Contractors, Inc. v. Dep’t of Labor & Indus., 
    136 Wn. App. 1
    , 4, 
    146 P.3d 1212
     (2006).
    B.     Unchallenged Findings
    As a preliminary matter, we address the Clinic’s claim that it does not admit
    unchallenged findings of fact as verities on appeal. The Clinic asserts that because many of the
    Board’s findings of fact and conclusions of law are not related to the issue of equitable estoppel,
    it does not assign error to all the Board’s findings and conclusions. The Clinic further claims
    that though it does not cite or assign error to other findings of fact, it does not admit any
    unchallenged findings as verities on appeal.
    13
    No. 49569-4-II
    Under the Rules of Appellate Procedure, an appellant must separately assign error to each
    finding that he challenges on appeal, must identify each challenged finding by number, and must
    separately assign error to any challenged administrative findings. RAP 10.8(g)-(h). Where an
    appellant fails to assign error to administrative findings, we treat those findings as verities unless
    the appellant’s briefing makes it clear which findings he is challenging and on what grounds he
    challenges them. Bircumshaw v. State, 
    194 Wn. App. 176
    , 198, 
    380 P.3d 524
     (2016).
    The Clinic cites to no authority to support its contention that a party can prevent
    unchallenged findings of fact from becoming verities on appeal simply by stating that they do
    not “admit” as verities findings of fact unrelated to the issue on appeal. Accordingly, for
    purposes of this appeal, we accept as verities all unchallenged findings of fact.
    C.     The Board’s Challenged Findings Are Supported by Substantial Evidence
    The Clinic challenges the Board’s findings of fact 8, 11, 12, 20, and 30, claiming that
    they are not supported by substantial evidence or are otherwise improper.       We hold that each
    finding is supported by substantial evidence.
    The Clinic first assigns error to the trial court’s finding of fact 8, which states:
    An enhancement payment is a monthly amount paid to RHCs for each client
    enrolled with a managed care organization (MCO). The MCO contracts with RHCs
    to provide services under the Healthy Options plan. RHCs receive enhancement
    payments from the Agency at the time the reconciliation occurs. Enhancement
    payments are made in addition to the negotiated payment the RHC receives from
    the MCO for the same services. In 2009, enhancement payments were made based
    on rosters that were submitted by the MCO. The roster is a list of clients by name
    and the key identifier that is assigned by the MCO to each clinic. The rosters were
    then uploaded into the [] payment system and the RHC[’]s enhancement payment
    was applied to each client that was associated with the clinic.
    Clerk’s Papers (CP) at 12-13 (citations omitted).
    14
    No. 49569-4-II
    The Clinic argues that the Board’s description of an enhancement payment, method of
    calculation, and method of payment is incorrect because the description does not “comport” with
    WAC 182-549-1100 and WAC 182-549-1400. Br. of Appellant at 9. The Clinic argues that an
    enhancement payment is not just defined as a monthly amount paid to RHCs for each client
    enrolled with an MCO, but is further defined as a payment received by a provider from the
    Agency in addition to the negotiated payments the providers receive from MCOs for services to
    enrollees. The Clinic asserts that the fact that enhancements are made in addition to other
    payments made to RHCs is the “most critical part” of the definition, and the failure of the Board
    to consider that is an “obvious and fatal” error. Br. of Appellant at 9.
    The Clinic’s argument is a legal objection to a finding of fact. We review findings of fact
    to determine whether the findings are supported by substantial evidence. Pilchuck, 170 Wn.
    App. at 517. Other than the inconsequential error we mention in footnote 5, finding of fact 8 is
    supported by substantial evidence.
    Here, Cashman testified that enhancement payments are payments made by the Agency
    “in addition to the amounts paid by the managed care organizations.” 1 VRP at 24.
    Additionally, unchallenged finding of fact 15 states that “the contracted amount that the MCO
    pays, in addition to the enhancement payment paid by the agency, makes the RHC whole.” AR
    at 4.
    Further, the record supports the finding that enhancement payments are related to
    services. Cashman testified that the enhancement payment process operates by the MCO
    submitting to the Agency a list of enrollees to whom the Clinic provided services. At the time
    the MCOs submit the list to the Agency, the MCOs have already paid the Clinic for the services.
    15
    No. 49569-4-II
    The estimated enhancement payments are then paid by the Agency to the Clinic based on the list
    of enrollees who received services from the Clinic, the same services for which the Clinic
    already received the MCO payment for. Therefore, based on this evidence, the Board’s finding
    is supported by substantial evidence.
    The Clinic also assigns error to the trial court’s finding of fact 11, which states:
    Reconciliation is the process whereby the Department ensures that the appropriate
    amount was paid to the RHC. The Department performs an annual reconciliation
    of the enhancement payment. Because the Appellant used the APM, the
    reconciliation would be based on the following formula: (Managed care
    encounters) x (APM encounter rate) less (fee-for-service equivalent) = State’s
    payment amount.
    CP at 13.
    The Clinic argues that this finding is erroneous because the Agency did not conduct a
    reconciliation of the 2009 enhancement payments until 2013 and that to make a finding that the
    Agency performs an “annual” reconciliation is therefore erroneous. Br. of Appellant at 10.
    Here, Cashman testified that the Agency performs an annual reconciliation of the
    enhancement payments made to the RHCs. Thus, finding of fact 11 is supported by substantial
    evidence.
    The Clinic also assigns error to the Board’s finding of fact 12, which states:
    After reconciliation, if the Agency determines that the RHC was overpaid, the
    [Agency] will recoup the overpayment amount; if the RHC was underpaid, the
    Agency will pay the difference owed. Enhancement payments exist in an effort to
    estimate, during the year, the full payment allowed to the RHC. The Agency
    estimates the additional dollar amount it would take for the RHC to be paid their
    entire encounter rate, which is equal to the [Fee-For-Service] rate.
    CP at 13-14.
    16
    No. 49569-4-II
    The Clinic argues that the Board’s finding that the Agency “will recoup” any overpaid
    enhancement payment is not supported by the record. Br. of Appellant at 10. The Clinic argues
    that the more proper “manifestation of the intent” of the enhancement payment process is that
    enhancement payments are to ensure that the total amount received by the RHC “at least equals
    to that of the encounter rate. Br. of Appellant at 11. The Clinic contends that the enhancement
    payment process exists to ensure that RHCs are paid at least the minimum amount owed, and
    does not exist to take away any payment made in addition to that minimum amount.8
    The testimony of Sandra Cashman supports the Board’s finding. Cashman testified that
    if an RHC has been overpaid, the Agency will recoup the amount that it overpaid and that if the
    RHC was underpaid, the Agency would pay the RHC the difference. Finding of fact 12 is
    supported by substantial evidence.
    The Clinic also assigns error to the Board’s finding of fact 20, which states:
    To ensure that the appropriate supplemental payments (called enhancements) are
    made to each RHC, the Agency performs an annual reconciliation of the
    enhancement payments. The Agency will compare the amount actually paid to the
    amount determined by the following formula: (Managed Care encounters [based on
    Rosters]) x (encounter rate) less (FFS equivalent of MCO services). If the clinic
    has been overpaid, the Agency will recoup the appropriate amount. If the clinic has
    been underpaid, the Agency will pay the difference.
    CP at 16 (citation omitted).
    8
    The Clinic again appears to argue that the Board’s finding is an improper conclusion of law.
    Specifically, that the intent behind enhancement payments does not stand for the notion that the
    Agency can take away overpaid enhancement payments. It appears that the Clinic argues that
    the Board improperly interpreted the law regarding enhancement payments to preserve these
    claims for a different tribunal. Because the only issue on review here is whether the Board’s
    findings are supported by substantial evidence and whether those findings support the Board’s
    conclusion that equitable estoppel applies, this court should not address the Clinic’s arguments
    because they appear to be solely for purposes of preserving its objections.
    17
    No. 49569-4-II
    The Clinic again argues that the Board’s finding that the Agency performs an annual
    reconciliation of the enhancement payments is incorrect. As discussed above, Cashman testified
    that the Agency conducts an annual reconciliation. Therefore, the Board’s finding is supported
    by substantial evidence.
    The Clinic also assigns error to the Board’s finding of fact 30, which states:
    Jenise Mugler is employed at [the Clinic] in various positions, as the General
    Administrator, Secretary, Treasurer and Director. She has been employed at [the
    Clinic] for twenty-two years. In September 2005, [the Clinic] became part of the
    state’s RHC program. Within the RHC program, [the Clinic] sees both private and
    public pay clients. [The Clinic] is an RHC that sees mainly lower income children
    who are located in a rural area and underserviced by providers and other medical
    personnel. [The Clinic] is located in Lewis County, which is a heavily public-
    subsidized county. [The Clinic]’s designation as an RHC provides that the clinic
    will supply needed medical services to low income children and families. She is
    familiar with the billing process for MCOs. Her understanding is that the MCO
    pays the clinic directly for a claim that is made for an encounter that was made. In
    2009, when the Agency paid enhancements, [the Clinic] was sent a check by the
    state based upon what the Agency calculated was owed to [the Clinic] for the
    number of lives assigned to the clinic for that month. Her understanding is that an
    enhancement payment is in addition to an encounter payment. She has believed
    this to be the case since 2005, when it was explained to [the Clinic] that
    enhancements would be an additional source of income to encounters. Based on
    Exhibit 2 and Finding of Fact 18, this belief was not reasonable.
    CP at 19 (citations omitted).
    The Clinic argues that the Board improperly determined that Mugler’s belief that
    enhancement payments were additional income for the Clinic was unreasonable. The Clinic
    argues that this finding is neither a finding nor an appropriate determination and is also not
    supported by substantial evidence. We hold that this finding of fact is supported by substantial
    evidence.
    Evidence supports the finding that Mugler’s belief was unreasonable. The Board found
    that the Clinic had notice as early as 2008 that the enhancement payments were to be reviewed
    18
    No. 49569-4-II
    under a reconciliation process and that the Agency was developing a plan to recoup any
    overpayment. Additionally, the Board found that an enhancement payment is paid to supplement
    the payment that RHCs receive from MCOs in order to make the RHCs whole. A reasonable
    person, with knowledge about the potential for recoupment of overpayments and knowledge
    about the overarching enhancement payment scheme would not consider enhancement payments
    to simply be additional income. The Board’s finding is therefore supported by substantial
    evidence.
    II. THE BOARD’S CONCLUSIONS OF LAW ON EQUITABLE ESTOPPEL
    The Clinic argues that the Board incorrectly concluded that the Clinic failed to establish
    all elements of equitable estoppel by clear, cogent, and convincing evidence. 9 We disagree.
    A.     Legal Principles
    When reviewing an administrative agency decision, we review de novo an agency’s
    conclusions of law and its application of the law to the facts. Raven v. Dep’t of Soc. & Health
    Servs., 
    177 Wn.2d 804
    , 817, 
    306 P.3d 920
     (2013). We review the record to see whether
    substantial evidence supports the findings of fact and whether the superior court’s conclusions of
    law flow from these findings. Nelson v. Washington State Dep’t of Labor & Indus., 
    175 Wn. App. 718
    , 723, 
    308 P.3d 686
     (2013).
    9
    The Clinic challenges the Board’s conclusions of law 19, 20, 21, 23, 24, 25, 26, 27, and 28.
    Because the Clinic only asks us to address the issue of equitable estoppel, we need not address
    the Clinic’s challenges to conclusions of law 13, 14, and 15. These conclusions are unrelated to
    whether the Clinic established all elements of equitable estoppel by clear, cogent, and convincing
    evidence.
    19
    No. 49569-4-II
    Equitable estoppel is a legal doctrine that may be used only as an affirmative defense.
    WAC 182-526-0495.10 There are five elements of equitable estoppel. These elements are:
    (a) [The Agency] made a statement or took an action or failed to take an
    action, which is inconsistent with a later claim or position by [the Agency].
    (b) The party reasonably relied on [the Agency]’s original statement, action
    or failure to act.
    (c) The party will be injured to its detriment if [the Agency] is allowed to
    contradict the original statement, action or failure to act.
    (d) Equitable estoppel is needed to prevent a manifest injustice. Factors to be
    considered in determining whether a manifest injustice would occur include, but
    are not limited to, whether:
    (i) The party cannot afford to repay the money to [the Agency];
    (ii) The party gave [the Agency] timely and accurate information when
    required;
    (iii) The party did not know that [the Agency] made a mistake;
    (iv) The party is free from fault; and
    (v) The overpayment was caused solely by an [Agency] mistake.
    (e) The exercise of government functions is not impaired.
    WAC 182-526-0495.
    The party asserting equitable estoppel against the Agency must prove each element of
    estoppel by clear, cogent, and convincing evidence. WAC 182-526-0495. Under this burden of
    proof, the trier of fact must be convinced the fact at issue is “highly probable.” Bale v. Allison,
    
    173 Wn. App. 435
    , 453, 
    294 P.3d 789
     (2013) (quoting In re Welfare of Sego, 
    82 Wn.2d 736
    ,
    739, 
    513 P.2d 831
     (1973)).
    10
    The Clinic cites to the equitable estoppel elements cited in WAC XXX-XX-XXXX, the rule
    addressing equitable estoppel in DSHS actions. We rely on WAC 182-526-0495, because that
    rule specifically addresses equitable estoppel under HCA proceedings.
    20
    No. 49569-4-II
    B.     Equitable Estoppel Not Proven
    The Clinic argues that the Board incorrectly concluded that the Clinic failed to prove all
    necessary elements of equitable estoppel as required under WAC 182-526-0495.11 We disagree
    and hold that the Board’s findings of fact support its conclusion that the Clinic has not proven by
    clear, cogent, and convincing evidence that equitable estoppel applies.
    1. Reasonable Reliance
    The Clinic argues that the Board incorrectly interpreted the element of reasonable
    reliance.12 The Clinic asserts that it was reasonable for the Clinic to rely on the Agency’s
    conduct of sending monthly enhancement payments which the Clinic construed as incentive to
    continue to operate as a RHC. The Clinic also argues that it had “nothing to do” with any part of
    the enhancement payment process and that it simply received a check each month with “no
    explanation.” Br. of Appellant at 13. We hold that the Board’s findings support its conclusion
    that the Clinic failed to prove that it reasonably relied on the Agency’s overpayment.
    The Board’s finding make clear that the Clinic had full notice of federal Medicaid
    statutes and instructions from the federal government about the reconciliation and enhancement
    11
    The Board concluded that the Clinic met its burden in proving both the first and third element
    of equitable estoppel. Neither party addresses the first and third elements in their briefing nor do
    the parties challenge the Board’s conclusions regarding those elements on appeal. Therefore
    only elements of equitable at issue here are the second, fourth, and fifth elements.
    12
    The Clinic argues that the Board incorrectly interpreted the law with respect to equitable
    estoppel. When reviewing an administrative agency decision, this court reviews issues of law de
    novo. Ames v. Washington State Health Dep’t Med. Quality Health Assurance Comm’n, 
    166 Wn.2d 255
    , 260, 
    208 P.3d 549
     (2009). However, the Board’s conclusion that the Clinic has not
    met its burden to show that equitable estoppel applies is a conclusion of law based on the facts of
    this case and this conclusion is reviewed to determine if the findings of fact support the Board’s
    conclusion. Nelson, 175 Wn. App. at 723.
    21
    No. 49569-4-II
    payment process. The Clinic signed a core provider agreement with the Agency in 2005, thus
    subjecting the Clinic to state and federal laws as well as Agency rules, regulations, memoranda,
    billing instructions, and other agency documents. It is well established that parties are presumed
    to know the laws they are subject to. Barson v. Dep’t of Soc. & Health Servs., 
    58 Wn. App. 616
    ,
    618 n. 1, 
    794 P.2d 538
     (1990). It follows then that in 2009, at the time of the reconciliation in
    2009, the Clinic had reasonable notice of, 42 U.S.C. § 1396a (bb)(6)(B), the federal statute
    requiring that the Agency’s enhancement payments made to RHCs must make the total payment
    received by the RHCs at least equal to the payment RHCs would be paid under the PPS or APM.
    See 42 U.S.C. § 1396a (bb)(6)(B).
    Additionally, under federal regulations and as a result of the 2006 audit, the Agency
    created a State Plan Amendment establishing that the Agency procedures were in conformity
    with federal regulations. See 
    42 C.F.R. § 430.10
    . Specifically, the Agency developed a
    methodology for making enhancement payments to RHCs that was consistent with federal
    statutes and regulations. The federal government approved the State Plan Amendment and the
    enhancement payment methodology, and the amendment became effective in July 2008. The
    federal regulations, the audit results, and the State Plan Amendment were all in place in 2008 and
    the Clinic, through its core provider agreement, was on notice of them and subject to comply
    with them.
    Moreover, the Clinic received a letter in 2008 from the Agency informing the Clinic of
    the results of the audit and the Agency’s noncompliance with the enhancement process. The
    letter informed the Clinic that the Agency was working to create enhancement rates that were
    complaint with the audit results and federal law. The 2008 letter also referred to the Agency’s
    22
    No. 49569-4-II
    expectation of reconciling payments and developing a process for when underpayments and
    overpayments existed. The Agency again notified the Clinic in June 2009 about the upcoming
    reconciliation and informed the Clinic that if the reconciliation results showed that the Agency
    had made an overpayment, the Clinic would be responsible for the overpayment.
    Based on these facts, it was not reasonable for the Clinic to believe that it would never be
    required to repay overpaid enhancement payments or that the enhancement payments were
    simply “additional” income. It also was not reasonable for the Clinic to rely on the Agency’s
    overpayment as the Clinic was on notice of the contingent nature of the enhancement payments.
    Accordingly, the Board’s conclusion that the Clinic failed to meet its burden to show that it
    reasonably relied on the Agency’s action of overpayment of enhancement payments or that any
    overpayment would not be recovered by the Agency, is supported by the findings of fact.
    Because the Clinic has failed to meet its burden to show that it reasonably relied on the
    Agency’s overpayment it has failed to establish this element of equitable estoppel.
    2. Impairment of Government Functions
    The Clinic contends that the Board incorrectly interpreted the law by concluding that the
    exercise of government functions would be impaired if the Agency was precluded from
    recouping the overpayment.13 Specifically, the Clinic argues that preventing the Agency from
    13
    The Clinic argues that the Board incorrectly interpreted the law with respect to impairment of
    government functions. However, the Board’s conclusion that the Clinic has not met its burden to
    show that exercise of government functions would be impaired if the Agency was precluded
    from recouping the overpayment, is a conclusion of law based on the facts of this case. This
    conclusion is reviewed to determine if the findings of fact support the Board’s conclusion,
    Nelson, 175 Wn. App. at 723, and whether the conclusion is legally erroneous. Skamania Cty. v.
    Columbia River Gorge Comm’n, 
    144 Wn. 2d 30
    , 42, 
    26 P.3d 241
     (2001).
    23
    No. 49569-4-II
    collecting the overpayment would not stop the Agency from reconciling enhancement payments,
    but would only prevent it from collecting “improper overpayments.” Br. of Appellant at 14. The
    Clinic argues that there is no federal law requiring the Agency to recoup overpaid enhancement
    payments and therefore no government impairment is caused by preventing the recoupment. We
    disagree and hold that the Board’s findings of fact support its conclusion that the exercise of
    government functions would be impaired if equitable estoppel prevented recoupment of the
    overpayments.
    CMS authorized the Agency’s enhancement payment and reconciliation process in 2009
    after the Agency amended its process. CMS approved the amended plan which required the
    Agency to pay estimated enhancement payments to RHCs throughout the year followed by a
    reconciliation of those payments to determine if enhancement payments brought the RHCs total
    to an amount exactly equal to what the RHC were entitled to receive. Thus, it is clear that any
    restriction on the Agency’s ability to collect enhancement overpayments would impair the
    Agency from obeying its federal Medicaid mandate, which is to ensure that the Agency operates
    a payment system that supports “efficiency, economy, and quality of care” by ensuring that
    clinics are paid the appropriate amount. See AR at 119.
    The Clinic has not clearly shown that government functions would not be impaired if the
    Agency was precluded from recouping the $74,634 of the remaining overpayment debt.
    Therefore, the Clinic has not established this element of equitable estoppel.
    Because the Clinic has failed to meet its burden to show that it reasonably relied on the
    Agency’s overpayment and that government functions would not be impaired, the Clinic has
    failed show by clear, cogent, and convincing evidence that it has established all five elements of
    24
    No. 49569-4-II
    equitable estoppel. Therefore, we do not address the other elements. WAC 182-526-0495 (The
    party asserting equitable estoppel must prove all elements by clear and convincing evidence.).
    Accordingly, the Board’s conclusion that equitable estoppel does not preclude the Agency from
    recovering the overpayment is not improper and is supported by the findings.
    III. ATTORNEY FEES
    In its conclusion, the Clinic appears to request appellate costs and reasonable attorney
    fees. RAP 18.1 permits us to grant attorney fees to a party entitled to them under applicable law.
    But RAP 18.1(b) requires an appellant to include a section of its opening brief to the request for
    the fees or expenses. Here, the Clinic failed to include a separate section for attorney fees as
    required. Moreover, the Clinic does not cite any specific statute or case entitling it to attorney
    fees and costs on appeal. Thus, the Clinic is not entitled to attorney fees and cost.
    We affirm the Board’s decision.
    A majority of the panel having determined that this opinion will not be printed in the
    Washington Appellate Reports, but will be filed for public record in accordance with RCW
    2.06.040, it is so ordered.
    Worswick, P.J.
    We concur:
    Bjorgen, J.
    Melnick, J.
    25