Austin Powder Company v. Billy Keith Stacy ( 2017 )


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    RENDERED: AUGUST 24, 2017
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    2016-SC-000347-WC
    AUSTIN POWDER COMPANY                                             APPELLANT
    ON APPEAL FROM COURT OF APPEALS
    CASE NOS. 2014-CA-000918-WC & 2014-CA-000946-WC
    V.                WORKERS' COMPENSATION BOARD
    NO. 12-WC-01514
    BILLY KEITH STACY;                                                APPELLEES
    HON. R. SCOTT BORDERS,
    ADMINISTRATIVE LAW JUDGE; AND
    WORKERS' COMPENSATION BOARD
    MEMORANDUM OPINION OF THE COURT
    AFFIRMING
    An Administrative Law Judge (AW) found that Billy Keith Stacy suffered
    from an occupational noise-induced hearing loss and from work-related
    repetitive trauma to his wrists and .low back. Based on those findings, the AW
    found that Stacy is permanently totally disabled, and he awarded income and
    medical expense benefits accordingly. Austin Powder Company appealed to the
    Workers' Compensation Board (the Board), which affirmed in part, and
    reversed and vacated in part. Both parties sought review before the Court of
    Appeals, which affirmed the Board in part and reversed in part. I Austin
    Powder appeals to this Court arguing that the portion of the AW's opinion
    affirmed by the Board and the Court of Appeals was not supported by evidence
    of substance and should be reversed in its entirety. Having reviewed the
    record, the lengthy and well-reasoned opinions from below, and the arguments
    of the parties, we affirm.
    I. BACKGROUND.
    Stacy testified that he worked as a drill operator for Austin Powder from
    May 3, 2005 until he was laid off on April 1_6, 2012. Following his last day of
    .                                                           .
    work, Stacy filed workers' compensation claims for: cumulative-trauma injuries
    to his wrists, hands, and low back; occupational hearing loss; and coal
    workers' pneumoconiosis. The only claims in dispute on this appeal involve
    Stacy's alleged work-related injuries to his wrists and hands and his hearing
    loss; therefore, we do not address any of the evidence filed in his coal workers'
    pneumoconiosis claim.
    Stacy operated a piece of heavy equipment called a drill. As a drill
    operator, Stacy was required to measure and lay out grids along an area to be
    surface mined and to mark where he would drill holes for blasting. This
    required him to climb in and out of the drill's cab. Once an area was marked,
    1  The Board rendered its opinion before this Court rendered Hale v. CDR
    Operations, Inc., 
    474 S.W.3d 129
    (Ky. 2015). Thus, the Board stated that the AW, on
    remand, had to determine what portion, if any, of Stacy's cumulative trauma injury
    occurred while Stacy was employed by Austin Powder and the onset date of Stacy's
    injuries. The Board then instructed the AW to apportion any entitlement to benefits
    accordingly. The Court of Appeals, based on Hale, reversed the Board's findings ort
    those two issues.
    2
    Stacy sat in what he described as a non-pressurized, heated/air-conditioned
    cab and operated the drill by manipulating a number of switches and levers.
    Stacy also had to clean the tracks and grease the drill. He described his job as
    not requiring a great deal of physical exertion and testified that he wore
    hearing protection while working.
    Stacy testified that he could sit for long periods without difficulty but
    experienced back pain when standing for more than fifteen minutes and when
    walking. Using his hands caused· swelling and pain in his hands and wrists.
    Stacy stated that he was not receiving any specific medical treatment for his
    physical conditions. As to his hearing loss, Stacy did not realize he had a
    problem until after he had his hearing checked, although he did report that his
    children sometimes told him to turn down the volume on the television.
    Hirley Smith, blasting coordinator for Austin Powder when Stacy worked
    there, testified that the cab was pressurized to reduce exposure to noise and
    dust. According to Smith, the noise level in the pressurized cab had been
    measured at 74.2 to 76 decibels and the hearing protection Stacy wore reduced
    the noise level by 32 decibels.
    In support of his injury claim, Stacy filed reports from Dr. Hughes; the
    August 22, 2012 note from Baptist Southeast Orthopeadics/Dr. Belhasen; the
    physical capacities evaluation of Dr. Raiche!; and the April 29, 2013 NCV
    report from M&G Neurophysiology. Austin Powder filed several reports and the
    deposition of Dr. Schiller, the deposition of Dr. Hughes, the July 25, 2012 note
    from Baptist Southeast Orthopeadics/Dr. Belhasen, and the report of Dr.
    3
    Gabriel. In support of his hearing loss claim, Stacy filed the September 6,
    2012 report from audiologist Robert Moore. Pursuant to KRS 342.315(2) and
    803 KAR 25:010(11), the Department of Workers' Claims filed the February 19,
    2013 Form 108-HL, Medical Report- Hearing Loss of Drs. Jones and Ormond.
    Austin Powder filed the deposition of Dr. Jones. We summarize that medical
    evidence below.
    The parties, the AW, the Board, and the Court of Appeals discuss Dr.
    Hughes's reports in detail. For reasons that are .unclear, those reports are not
    in the record before us; however, neither party has indicated that the reports
    were not filed with the Department of Workers' Claims or were not properly in
    evidence, or were not in the record before the Board and the Court of Appeals.2
    Although Austin Powder objects to the AW's reliance on Dr. Hughes's reports,
    it does not dispute the accuracy of the AW's summary of those reports or the.
    Board's quotes from those reports.3 Therefore, we adopt the following
    summary of Dr. Hughes's reports by the AW and the following quotes from Dr.
    Hughes's reports by the Board as our own.
    The Plaintiff submitted the Form 107 from Dr. Hughes dated
    November 28, 2012. Mr. Stacy related to Dr. Hughes an
    employment history of being employed as a drill operator where
    · 2 The Court of Appeals issued an order to the Department of Workers' Claims
    requesting that it supplement the record by producing documents associated with
    Stacy's injury claim. The Department did provide a supplement; however, the
    supplement that this Court has contains records related to Stacy's coal workers'
    pneumoconiosis claim, not his injury claim.
    3 We note the AW stated in his opinion and award that Dr. Hughes assigned an
    18% permanent impairment rating when Dr. Hughes had actually assigned a 16%
    permanent impairment rating. The AW corrected that finding in his order on
    reconsideration.
    4
    [he] had a gradual onset of lower back pain with standing and
    walking beginning approximately five years ago. He feels okay
    when lying or sitting and the pain occur[s] when he is changing
    drill bits and walking or bending over. He does not have leg pain
    and no tingling of°the legs. He has been running .equipment and
    performing surface mining for 41 years. He can run the drill while
    sitting but is unable to run rock trucks, graders, loaders, ahd
    dozers.
    He has a past history of hypertension and gout affecting
    particularly the right foot and was unable to work when:the gout is
    active. He has had pain in both hands for the past seven years.
    His hands swell and he is unable to grasp a handrail or even use
    toggle switches on the drill when his hands are swollen. The pain
    flares up when he tries to use his hands. He has also experienced
    an 80% hearing loss.
    Dr. Hughes reviewed the medical report of Dale Williams, DC;
    evaluation by Michael Raiche!, DO; an audiogram dated September
    6, 2012; diagnostic studies, and performed a physical examination
    on him.
    Based on the foregoing, Dr. Hughes diagnosed the Plaintiff with
    lower back pain and bilateral hand and wrist pain and reduced
    range of motion and strength.
    Dr. Hughes opined that the Plaintiffslong history of repetitive
    injuries ;,ts a consequence of his occupation as a heavy equipment
    operator for the past 41 years is the cause of his complaints. Dr.
    Hughes notes that Mr. Stacy's lower back pain has interfered with
    his ability to operate heavy equipment because he cannot stand,
    walk, or lift. He is able to sit. This has interfered with his ability
    to perform ordinary tasks of daily living at home as well[.] He has
    developed bilateral hand pain attributed to arthritis, which also
    limits his ability to use his hands for ordinary tasks at home or in
    his job as a driller and heavy equipment operator.
    Using the Fifth Edition of the AMA Guides, Dr. Hughes assessed
    the Plaintiff an 18% functional impairment rating. MMI has not
    been reached, as he has had no significant treatment for the lower
    back or bilateral hand condition. Dr. Hughes does not feel the
    Plaintiff retains the physical capacity to return to the type of work
    he was perform~ng at the time of his injury. He should avoid any
    prolonged standing or walking; lifting he would suggest 10 pounds
    regularly and 20 pound[s] on occasion. He cannot get on and off
    5
    the equipment safely because.of hand problems and should avoid
    bending and twisting the lumbar spine.
    _Attached to the Form 107 was an additional report dated
    December 19, 2012, in which Dr. Hughes opined the Plaintiff
    would be at MMI and that the impairment rating remained the
    same, and the restrictions would remain the same. He is of the
    opinion that the Plaintiff is incapable of returning to his former
    occupation.
    The Board quoted from Dr. Hughes's reports as follows:
    With respect to causation, [Dr. Hughes] stated as follows:
    Within reasonable medical probability, ):he plaintiffs
    long history of repetitive injuries as a consequence of
    his occupation as a heavy equipment operator for the
    past 41 years is the cause of his complaints.
    Mr. Stacy has lower back pain, which is a consequence
    of his occupation, and he has bilateral hand pain,
    which, as he understands it, had been attributed to
    arthritis, which also is a consequence of long term
    repetitive trauma as a consequence of his occupation.
    Under the heading "Explanation of Causal Relationship," Dr.
    Hughes provided the following:                  ·
    Mr. Stacy's lower back pain has interfered with his
    ability to operate heavy equipment because he cannot
    stand, walk or lift. He is able to sit. This has
    interfered with his ability to do the ordinary tasks of
    daily living at home as well. He has developed
    bilateral hand pain attributed to arthritis, which also
    limits his ability to use his hands for ordinary tasks at
    home or in his job as a driller and heavy equipment
    operator.          ·
    Dr. Hughes assessed a 16% impairment rating broken down as follows:
    Lower back pain 5%
    Reduced range of motion of the left wrist 5%
    Restricted range of motion of the left wrist 1%
    6
    Reduced grip strength $[sic]6%[.]
    In his deposition, Dr. Hughes admitted that he did not Imow how often
    Stacy performed various tasks or how much force he used in doing so.
    Furthermore, Dr. Hughes could not cite to any specific studies to support his
    finding that Stacy had suffered cumulative-trauma injuries. However, he
    stated that he believed such studies exist. As to his impairment ratings, Dr.
    Hughes admitted that the AMA Guides to the Evaluation of Permanent
    Impairmen~ (the Guides) states that loss of grip strength should not be used
    when a person has hand/wrist pain. He also admitted that he only did active
    range of motion testing when the Guides requires both active and passive
    testing if there is a d_eficit. Finally, Dr. Hughes stated that he had no
    explanation for Stacy's wrist/hand complaints other than trauma from
    repetitive motion.
    The Baptist Southeast Orthopeadics/Dr. Belhasen notes indicate that
    Stacy complained of bilateral wrist, ankle, and foot pain, and he has a history
    of gout. According to Dr. Belhasen, Stacy had apparently learned to control his
    gout with diet and medication when he had an acute episode. However, Stacy
    noted that his wrist pain had gotten progressively worse and that work activity
    "at times [made] his hand pain quite severe." Dr. Belhasen made diagnoses of
    gout in the wrists, ankles, and feet in his July 2012 note and "Localized
    Primary Arthritis of the Wrist" in his August 2012 note. He stated that Stacy's
    • Linda Cocchiarella and Gunnar B.J. Andersson, AMA Guides to the
    Evaluation of Permanent Impairment (5th ed. 2012).
    7
    work as a heavy equipment operator "increased [his] hand and wrist pain," and
    noted that Stacy could undergo surgery but that the surgery would likely fail if
    Stacy continued working.
    Dr. Raiche! listed diagnoses of: hypertension, gout, hyperglycemia, B12
    deficiency, testosterone deficiency, and anxiety. His evaluation indicated that
    Stacy can only work two hours per day, can only sit and stand for one hour per
    day, and sh.ould avoid repetitive hand movements and crawling, squatting, etc.
    The M&G Neurophysiology record indicated that Stacy underwent an NCV on
    April 29, 2013.which showed evidence of bilateral carpal tunnel syndrome.
    Dr. Schiller first evaluated Stacy on February 28, 2013. Stacy advised
    Dr. Schiller .that he suffered from low back and wrist pain with wrist and hand
    swelling when working. However, Dr. Schiller noted that Stacy had no active
    complaints of pain or swelling on that day. Dr. Schiller's examination.revealed
    no neurological or range oCmotiori deficits in Stacy's wrists, hands, or lumbar
    spine. He made a diagnosis of age-related degenerative changes of the lumbar
    spine and noted that Stacy might have arthritis in his wrists; however, he did
    not have enough information to render a conclusive hand/wrist diagnosis.
    Based on his findings, Dr. Schiller assigned Stacy a 0% permanent impairment
    rating for Stacy's back but stated that, because he did not have sufficient
    information, he could not assign an impairment rating for Stacy's wrists. Dr.
    Schiller stated that Dr. Hughes's impairment ratings were not supported by the
    Guides, and that it appeared Dr. Hughes did not know how to use the Guides.
    Finally, Dr. Schiller stated that, based on his research, repetitive trauma
    8
    cannot cause degenerative changes, which are likely related to genetics;
    therefore, absent a specific traumatic event, Stacy could not have suffered a
    work-related injury.
    Dr. Schiller re-evaluated Stacy on May 8, 2013 and reviewed Dr.
    Belhasen's medical records. According to Dr. Schiller, Dr. Belhasen found
    evidence of "fluid collections over the dorsal aspect of both wrists and a dorsal
    portion of [Stacy's] hand" and made a diagnosis of gout involving both wrists
    and ankles. Dr. Schiller's examination on May 8 revealed decreased wrist
    range of motion bilaterally, but no crepitus, complaints of pain, or evidence of
    carpal tunnel syndrome, and the ability to make fists with both hands. Based
    on his records review and examinations, Dr. Schiller concluded that Stacy
    suffers from "psychosomatic complaints related more to the secondary gain of a
    lawsuit than anything else."
    Dr. Gabriel examined Stacy at the request of Austin Powder on May 14,
    2013 and found decreased wrist range of motion bilaterally and positive Tin el 's
    sign bilaterally, but negative Phalen's and median nerve tests. X-rays of
    . Stacy's wrists showed mild degenerative changes with inflammatory
    arthropathy and Dr. Gabriel made diagnoses of chronic bilateral hand/wrist
    pain, gouty/ degenerative arthritis bilaterally; and bilateral carpal tunnel
    syndrome. According to Dr. Gabriel, Stacy's complaints are "more likely than
    not' related to genetic factors and other "comorbid medical risk factors" rather
    that cumulative trauma, which "has not been confirmed as a reason to develop
    9
    degenerative arthritis." Finally, Dr. Gabriel stated that Stacy had not reached
    maximum medical improvement and could use his hands "as tolerated."
    Iri his report, audiologist Moore stated that Stacy has moderate to severe
    high frequency hearing loss; however, he did not address whether Stacy has a
    hearing-related permanent impairment rating. In their report, Ors. Jones and
    Ormond stated that Stacy's pattern of hearing loss is compatible with
    hazardous workplace noise exposure. They assigned Stacy a 2% permanent
    impairment rating, which they attributed to that exposure.
    In his deposition, Dr:. Jones testified that, pursuant to OSHA guidelines,
    exposure to noise of less than 85 decibels over an eight-hour day is not deemed
    to be an injurious exposure. Furthermore, he stated that exposure to noise at
    73 decibels or less, with or without hearing protection, would not be expected
    to produce hearing loss. Dr. Jones stated that, once a person has hearing loss,
    his condition will not improve, but it could·worsen with additional exposure.
    Finally, Dr. Jones confirmed his conclusion that Stacy suffered an
    occupational noise-related hearing loss; however, he could not state whether
    Stacy's last injurious exposure occurred at Austin Powder.
    Based on the preceding evidence, the AW found that Stacy suffered an
    occupational hearing loss and that Stacy ·was last exposed to "occupational
    noise while .employed" by Austin Powder. In so finding, the AW noted that Dr.
    Jones's·opinion is granted presumptive weight pursuant to KRS 342.315 and
    Austin Powder had not overcome that presumption. However, because Stacy's
    '
    10
    hearing loss permanent impairment rating was less than 8%, the AW awarded
    medical expense benefits only.
    The AW also found that Stacy suffered cumulative trauma injuries to his
    lumbar spine and wrists. In doing so, the ALJ specifically found Stacy's
    testimony to be credible and the opinion of Dr. Hughes to be the most
    persuasive. The AW then found that Stacy has a 16% permanent impairment
    rating as assigned by Dr. Hughes and that, based on his age, education, work
    experience, and limitations, Stacy is permanently totally disabled.
    Austin Powder appealed to the Board, which affirmed in part, vacated in
    part, and remanded. The Board found that Dr. Hughes's Form 107 and
    depo_sition testimony supported his objective medical findings. However, the
    Board found that Dr. Hughes's assignment of a permanent impairment rating
    based on Stacy's loss of grip strength and lumbar spine condition were not
    supported by and are contrary to the Guides. However, the Board found that
    Dr. Hughes's determination of permanent impairment rating for loss of wrist
    range of motion was appropriate under the Guides. As to Stacy's hearing loss,
    the Board found that Stacy's report to Dr. Jones that the drill was "a pretty
    noisy piece of equipment" was sufficient to support Dr. Jones's opinion .
    regarding causation. Thus, the Board affirmed the AW's finding that Stacy has
    a 6% permanent impairment rating related to his wrists but vacated the AW's
    findings as to Stacy's other injury-related permanent impairment ratings. The
    Board also vacated the AW's finding of permanent total disability and
    remanded for the AW to make a new determination regarding the onset date of
    11
    and the extent and duration of Stacy's disability. Finally, the Board noted that
    the absence of a permanent impairment rating for Stacy's alleged back injury
    was not determinative of the existence of said injury. Therefore, the Board
    instructed the AW on remand to determine if Stacy had suffered a repetitive
    trauma back injury and if Stacy is entitled to medical expense benefits for
    treatment of any such injury.
    Stacy and Austin Powder sought review by the Court of Appeals. The
    Court of Appeals affirmed the Board's opinion vacating the AW's findings
    regarding Stacy's lumbar spine and grip strength permanent impairment
    ratings. The Court of Appeals also affirmed the Board's remand for findings
    regarding entitlement to medical expense benefits for Stacy's alleged lumbar
    spine injury. In doing so, the Court noted that neither party had raised any
    issues with those findings by the Board. The Court also affirmed the Board's
    finding that the AW did not abuse his discretion by relying on Dr. Hughes's 6%
    wrist-related permanent impairment rating and Dr. Jones's 2% hearing-related
    permanent impairment rating.
    II. STANDARD OF REVIEW.
    The AW as fact finder has the sole authority to judge the weight, .
    credibility, substance, and inferences to be drawn from the evidence.
    Paramount Foods, Inc. v. Burkhardt, 
    695 S.W.2d 418
    , 419 (Ky. 1985). In
    reaching his decision, the AW is free to choose to believe or disbelieve parts of
    the evidence from the total proof, no matter which party offered it. Caudill v.
    Maloney's Discount Stores, 
    560 S.W.2d 15
    , 16 (Ky. 1977). If the party with the
    12
    burden of proof is successful before the AW, the question on appeal is whether
    the AW's opinion was supported by substantial evidence. Whittaker v.
    Rowland, 
    998 S.W.2d 479
    , 481 (Ky. 1999). Substantial evidence is evidence of
    substance and relevant consequence, having the fitness to induce conviction in
    the minds of reasonable people. Smyzer v. B.F. Goodrich
    G
    Chem.
    .
    Co., 
    474 S.W.2d 367
    , 369 (Ky. 1971). However, the AW's discretion is not limitless and
    we will reverse the AW if his opinion "is so unreasonable under the evidence
    that it must be viewed as erroneous as a matter oflaw." Ira A. Watson Dep't.
    Store v. Hamilton, 
    34 S.W.3d 48
    , 52 (Ky. 2000). Furthermore, when there are
    mixed questions of fact and law, we have greater latitude in determining if the
    underlying decision is supported by the evidence. Purchase Transp. Servs. v.
    Estate of Wilson, 
    39 S.W.3d 816
    , 817-18 (Ky. 2001); Uninsured Employers'.
    Fund v. Garland, 
    805 S.W.2d 116
    , 117 (Ky. 1991).
    III. ANALYSIS.
    Austin Powder argues that the AW's findings that Stacy has a 6%
    permanent impairment rating related to his hands and wrists and a 2%
    permanent impairment rating related to hearing loss are not supported by
    substantial evidence. We address each argument separately below.
    A.    Hand/wrist permanent impairment rating.
    Austin Powder argues that the AW could not rely on Dr. Hughes's
    opinion for two reasons: (1) Dr. Hughes did not calculate his permanent
    impairment rating in accordance with the Guides; and (2) Dr. Hughes's opinion
    was insubstantial because he: (a) had a faulty history; (b) knew nothing of
    13
    Stacy's work duties; (c) could not identify the source of Stacy's pain; and (d)
    relied on Stacy's "hearsay" statement that he had arthritis in his wrists. We
    '
    address each argument in turn below.
    1.    Calculation of permanent impairment rating.
    Dr. Hughes admitted the Guides provides that, if active range of motion
    testing shows a deficit, an evaluator should test motion passively. Because he
    believed he might cause Stacy pain if he performed passive range of motion
    testing, Dr. Hughes only measured Stacy's active range of.motion. Austin
    Powder argues that, because Dr. Hughes did not perform passive range of
    motion _testing, his permanent impairment rating lacks any credibility. We
    disagree with Austin Powder's argument for two reasons.
    First, we note that Austin Powder appropriately does not contest Dr.
    Hughes's finding that Stacy had decreased range of motion, a finding that both
    of its experts, Drs. Gabriel and Schiller, also made. Thus, the issue is not
    whether Stacy had a loss of range of motion but whether Dr. Hughes
    appropriately arrived at his permanent impairment rating based 9n his
    findings. As noted in Section 16.4 page 451 of the Guides, "Measurements of
    active motion take precedence in the Guides . ... [and] [s]ound clinical
    knowledge and measurement techniques are necessary for appropriate
    .impairment evaluation and rating." (Emphasis_in original.) Since the Guides
    states that active motion testing takes precedence, we cannot say that Dr.
    Hughes's clinical judgment to forego passive range of motion testing was
    beyond acceptable practice under the Guides.
    14
    Second, Austin Powder's reliance on Jones v. Brasch-Barry General
    Contractors, 
    189 S.W.3d 149
    (Ky. App. 2006) is misplaced. In Jones, the
    parties introduced evidence from three physicians. 
    Id. at 151.
    Two of the
    physicians assessed Jones a 10% permanent impairment rating and one
    assessed him a 26% permanent impairment rating. 
    Id. The physician
    who
    assessed the 26% permanent impairment rating admitted that Jones "did not
    meet the textbook definition" necessary to support that rating. 
    Id. The physician
    explained his permanent impairment rating by stating "that the
    category definitions in the AMA Guides are meant to be used solely as the
    name of the text implies, as a guide." 
    Id. at 152.
    Based on that physician's
    opinion, the AW found that Jones had a 26% permanent impairment rating.
    
    Id. The Board
    reversed the AW, holding that the finding of a "twenty-six
    percent (26%) permanent impairment was not, as a matter of statutory law,
    supported by substantial evidence." 
    Id. The Court
    of Appeals affirmed, holding that:
    (A]n AW cannot choose to give credence to an opinion of a
    physician assigning an impairment rating that is not based upon
    the AMA Guides. In other words, a physician's latitude in the field
    of workers' compensation litigation extends only to the assessment
    of a disability rating percentage within that called for under the
    appropriate section of the AMA Guides. The fact-finder may not
    give credence to an impairment rating double that called for in the
    AMA Guides based upon the physician's disagreement with the
    disability percentages called for in the AMA Guides(.]
    
    Id. at 153.
    In Jones the physician assessed   a permanent impairment rating that was
    not supported by his findings and that was in excess of the rating provided for
    15
    in the Guides. There is no evidence that the permanent impairment rating
    assigned by Dr. Hughes was not supported by his findings or that itwas in
    excess of the rating provided for in the Guides .. The dispute is with the method
    Dr. Hughes used to measure Stacy's range of motion, which is a different
    matter entirely from that considered by the Court of Appeals in Jones.
    As noted above, Dr. Hughes admitted that the Guides requires both
    active and passive range of motion testing; however, as set forth in the Guides
    active range of motion takes precedence. The AW might have discredited Dr.
    Hughes's opinion because he did not perform both active and passive range of
    motion testing. However, because active range of motion testing takes
    precedence, Dr. Hughes's permanent impairment rating, which was based on
    active range of motion testing, was consistent with the Guides. Therefore, we
    agree with the Court of Appeals that Dr. Hughes's opinion regarding Stacy's
    wrist permanent impairment rating was based on the Guides.
    2.      Substantial evidence.
    As set forth above, Austin Powder argues that Dr. Hughes's opinion was
    also insubstantial because Dr. Hughes: (a) had a faulty history; (b) knew
    nothing of Stacy's work duties; (c) could not identify the source of Stacy's pain;
    (d) relied on Stacy's "hearsay" statement that he had arthritis in his wrists; and
    (e) made no finding that Stacy suffered a harmful change, We address each in
    turn.
    16
    a.    Faulty History.
    Austin Powder argues that Dr. Hughes did not have a complete
    understanding of Stacy's history of gout in his wrists as contained in Dr.
    Belhasen's records. Dr. Hughes admitted that he was not an expert regarding
    gout, and, as the Board noted, Dr. Hughes did not make any reference to Dr.
    Belhasen's reports. The problem with this argument is that Dr. Belhasen's
    diagnoses-gout in the wrists in July 2012 and localized osteoarthritis of the
    wrists in August 2012-are arguably inconsistent. The AW could have found
    that Dr. Hughes's failure to cite to Dr. Belhasen's records made Dr. Hughes's
    opinion less credible; however, that failure did not render Dr. Hughes's opinion
    so insubstantial as to be unreliable as a matter of law.
    b.    Failure to understand the physical demands of Stacy's work.
    Austin Powder argues that Dr. Hughes's opinion is insubstantially
    unreliable because Dr. Hughes could not state that Stacy repetitively used his
    hands and arms at work. Furthermore, he could not state with specificity what
    actual movements Stacy made or how often he made those movements.
    According to Austin Powder, without that information, Dr. Hughes's opinion
    that Stacy suffered repetitive trauma to his wrists can be given no credence.
    However, as stated above, while the AW might have found that this lack of
    specificity from Dr. Hughes made his opinion less credible, it did not render it
    so insubstantial as to be uru;eliable as a matter of law. In reaching this
    conclusion, we note that Austin Powder has not cited us to any authority
    stating that a physician who lacks such specific information regarding the
    17
    nature of an employee's work is foreclosed from expressing an opinion
    regarding causation. Nor has it cited us to any authority that an AW is
    foreclosed from relying on such an opinion.
    c.    Source of Stacy's pain.
    Austin Powder argues that Dr. Hughes did not state specifically what the
    source of Stacy's pain is, thereby rendering his _opinion unsubstantial.
    However, we note that Dr. Hughes stated that Stacy "has developed bilateral
    hand pain attributed to arthritis." Thus, Dr. Hughes did render an op~ion as
    to a causative factor for Stacy's pain.
    d.    Hearsay evidence of arthritis.
    Austin Powder argues that the only evidence Dr. Hughes had ·that Stacy
    has arthritis came from Stacy's self-report. While that may be true, there is
    medical evidence that Stacy has arthritis in his wrists as reported by Dr.
    Belhasen (localized primary osteoarthritis of the wrist) and Dr. Gabriel (mild
    degenerative changes with inflammatory arthropathy of the wrist). Thus, Dr.
    Hughes's statement that Stacy has arthritis is supported by medical evidence
    and not solely dependent for its credibility on Stacy's self-report.
    e.    Failure to find a harmful change evidenced by objective medical
    findings.
    KRS 342.0011(1) defines injury as "any work-related traumatic event or
    series of traumatic events, including cumulative trauma, arising out of and in
    the course of employment which is the proximate cause producing a harmful
    change in the human organism evidenced by objective medical findings."
    According to Austin Powder, Dr. Hughes made a diagnosis of pain, which is a
    18
    symptom and not a harmful change in the human organism evidenced by
    objective medical findings. We agree with Austin Powder that "[a] patient's
    complaints of symptoms clearly are not objective medical findings as the term
    is defined by KRS 342.0011(33)," Gibbs v. Premier Scale Co./Indiana Scale Co.,.
    
    50 S.W.3d 754
    , 762 (Ky. 2001), as modified
    .      .
    on cienial ofreh'g (Aug. 23, 2001).
    However, we note that "the existence of a harmful change" can "be established,
    indirectly, through information gained by direct observation and/or testing
    applying objective or standardized methods that demonstrated the existence of
    symptoms of such a change." 
    Id. Here, Dr.
    Hughes found evidence of loss of range of motion through the
    use of a standardized method of testing and that finding demonstrated the
    existence of pain, a symptom of the change. Furthermore, there is evidence
    from Dr. Belhasen and Dr. Gabriel that Stacy has arthritis in his wrists, which
    is clearly a harmful change evidenced by objective medical findings.
    Finally, we note that Austin Powder stated that "Drs. Raiche!, Belhasen,
    Gabriel, and Schiller ... all diagnosed gouty arthritis, not cumulative trauma." .
    While it is true that none of those physicians made a diagnosis of cumulative
    trauma, Austin Powder.'s statement is not exactly a correct representation of
    those physicians' diagnoses. Dr. Raiche! made diagnoses of hypertension,
    gout, hyperglycemia, B12 deficiency, testosterone deficiency, and anxiety.
    However, we note.that Dr. Raiche! did not state whether Stacy's gout was in his
    feet or wrists or both. Dr. Belhasen made two diagnoses - gout in the hands,
    wrists, and feet in July 2012 and localized primary arthritis of the wrist in
    19
    August 2012. He also noted that Stacy's work activity caused his complaints of
    pain to increase. Dr. Gabriel made diagnoses of chronic bilateral hand/wrist
    · pain, gouty/ degenerative arthritis bilaterally, and bilateral carp;;i.l tunnel.
    syndrome. Dr. Schiller stated that Stacy might have degenerative arthritis in
    his wrists; however, he had insufficient information to categorically reach that
    diagnosis. Even if Austin Powder were correct and all four physicians had
    made a diagnosis of gouty arthritis, those diagnoses would not have compelled
    the AW to find in Austin Powder's favor. As noted above, the AW is free to
    choose to believe or disbelieve parts of the evidence from the total proof, no
    matter which party offered it. Caudill v. Maloney's Discount Stores, 
    560 S.W.2d 15
    , 16 (Ky. 1977). Here, the AW chose to believe Stacy's proof, which he was
    free to do. Therefore, we affirm the Court of Appeals with regard to Stacy's
    injury claim.
    B.     Hearing loss permanent impairment rating.
    KRS 342.7305(4) provides that
    When audiograms and other testing reveal a pattern of hearing loss
    compatible with that caused by,hazardous noise exposure and the
    employee demonstrates repetitive exposure to hazardous noise in
    the workplace, there shall be a rebuttable presumption that the
    hearing impairment is an injury covered by this chapter, and the
    employer with whom the employee was last injuriously exposed to
    hazardous noise shall be exclusively liable for benefits.
    Austin Powder does not dispute that Stacy's audiological tests revealed
    hearing loss compatible with exposure to hazardous noise. Furthermore, it
    does not dispute that Stacy was repeatedly exposed to hazardous noise.
    However, Austin Powder does dispute whether Stacy was injuriously exposed to
    20
    I
    hazardous noise while in its employ. In support of that position, Austin
    Powder points out that Dr. Jones did not know the decibel level of noise to
    which Stacy was exposed at work.
    Austin Powder did introduce evidence, through Smith, that the cab was
    pressurized to reduce noise, the decibel level in the cab was below the OSHA
    threshold, and Stacy's hearing protection would have brought the decibel level
    even lower. However, Stacy advised Dr. Jones that the drill was noisy and the
    cab was not pressurized. The AW was free to believe Stacy's assessment of the
    noise level of the drill, as was Dr. Jones. Furth~rmore, based on Stacy's
    testimony that he did not realize he had a hearing loss until tested in
    September 2012, the AW was free to infer Stacy's hearing loss was caused,
    partially if not wholly, by his work for Austin Powder. Therefore, we affirm the
    Court of Appe,als, the Board, and the AW with regard to Stacy's hearing loss
    claim.
    IV. CONCLUSION.
    The Court of Appeals is affirmed. The AW's findings that Stacy has
    permanent impairment ratings for his lumbar spine and loss of grip strength
    are vacated, as is his finding that Stacy is permanently totally disabled. This
    ' (1) whether
    matter is remanded to the AW with instructions to determine:
    Stacy suffered a lumbar spine injury entitling him to medical expense benefits;
    (2) whether Stacy's entitlement to lumbar spine medical expense benefits is
    temporary or permanent; and (3) the extent and duration of Stacy's wrist-
    related disability. The AW should note that, by vacating the prior finding of
    21
    permanent total disability, we do not intend to foreclose such a finding on
    remand. If the AW believes that the evidence supports such a finding on
    remand, then he or she is free to make that finding and to award benefits
    accordingly.
    All sitting. All .concur.
    COUNSEL FOR APPELLANT:
    Walter Elliott Harding
    Boehl Stopher & Graves, LLP
    COUNSEL FOR APPELLEE, BILLY KEITH STACY:
    McKinnley Morgan
    Morgan Collins & Yeast
    22