John Strauss And Michelle Strauss v. Premera Blue Cross ( 2017 )


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    IN THE COURT OF APPEALS OF THE STATE OF WASHINGTON                     CO       —I
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    JOHN STRAUSS and MICHELLE           )           No. 74600-6-1                     1
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    STRAUSS, husband and wife, and their)                                            =as      CO rri
    marital community,                  )           DIVISION ONE                              2: I-
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    Appellants,    )                                           (A)       =7,c
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    v.                   )           UNPUBLISHED OPINION
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    PREMERA BLUE CROSS,                 )
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    Respondent. )               FILED: September 5, 2017
    SCHINDLER,   J. — John Strauss and Michelle Strauss (collectively, Strauss)
    appeal summary judgment dismissal of the lawsuit against Premera Blue Cross for
    breach of contract, bad faith, and violation of the Consumer Protection Act, chapter
    19.86 RCW. We affirm.
    Prostate Cancer Diagnosis
    In September 2008, doctors diagnosed 59-year-old John Strauss with
    intermediate-risk prostate cancer. Strauss met with University of Washington urologist
    Dr. Daniel Lin on October 6. Dr. Lin described the treatment options of surgery or
    radiation. Dr. Lin noted Strauss had "quite a lot of questions about proton therapy
    versus standard radiation" because "he lives part of the year in Southern California" and
    "heard about the proton facility at Loma Linda Hospital." But Dr. Lin said the focus of
    No. 74600-6-1/2
    the conversation was on surgery and the advantages of surgery. Dr. Lin referred
    Strauss to Seattle Cancer Care Alliance radiation oncologist Dr. Kenneth Russell to
    learn more about "radiation treatment options."
    Dr. Russell met with Strauss and discussed the medical literature on "long-term
    results and short-term side effects" of surgery "versus radiation therapy." Strauss told
    Dr. Russell he was "very interested in pursuing proton therapy, as he lives 45 minutes
    from Loma Linda." Dr. Russell discussed proton beam therapy (PBT) and intensity-
    modulated radiation therapy (IMRT). Dr. Russell told Strauss there is a "lack of clear,
    long-term evidence showing improved side effect profile for patients who undergo
    proton therapy versus WRIT"
    Premera Blue Cross Medical Insurance Policy
    Strauss was insured by Premera Blue Cross (Premera) under the "Heritage
    Preferred Plus 20 Plan." The policy covered "medically necessary" treatment, including
    "radiation." The policy states benefits "must be, in our judgment, medically necessary."
    The policy states, in pertinent part:
    WHAT ARE MY BENEFITS?
    This section of your contract describes the specific benefits available for
    covered services and supplies. Benefits are available for a service or
    supply described in this section when it meets all of these requirements:
    •   It must be furnished in connection with either the prevention or
    diagnosis and treatment of a covered illness, disease or injury
    •   It must be, in our judgment, medically necessary and must be
    furnished in a medically necessary setting.
    2
    No. 74600-6-1/3
    The policy defines "medically necessary" as in accord with generally accepted
    standards of medical practice and not more costly than an alternative treatment "at least
    as likely to produce equivalent" treatment results.
    MEDICALLY NECESSARY
    Those covered services and supplies that a physician, exercising prudent
    clinical judgment, would provide to a patient for the purpose of preventing,
    evaluating, diagnosing or treating an illness, injury, disease or its
    symptoms, and that are:
    •   In accordance with generally accepted standards of medical
    practice;
    •   Clinically appropriate, in terms of type, frequency, extent, site and
    duration, and considered effective for the patient's illness, injury or
    disease; and
    •   Not primarily for the convenience of the patient, physician, or other
    health care provider, and not more costly than an alternative
    service or sequence of services at least as likely to produce
    equivalent therapeutic or diagnostic results as to the diagnosis or
    treatment of that patient's illness, injury or disease. .
    For these purposes, "generally accepted standards of medical practice"
    means standards that are based on credible scientific evidence published
    in peer reviewed medical literature generally recognized by the relevant
    medical community, physician specialty society recommendations and the
    views of physicians practicing in relevant clinical areas and any other
    relevant factors.
    Prostate Cancer Guidelines
    The National Comprehensive Cancer Network (NCCN) is an organization that
    includes "the largest and best-known cancer centers" in the United States. The NCCN
    issues clinical practice guidelines that "describe best practices for cancer care." The
    NCCN guidelines "do not consider cost" and recommend all "available options that are
    supported by evidence."
    3
    No. 74600-6-1/4
    The 2009 and 2010 NCCN "Clinical Practice Guidelines in Oncology" for prostate
    cancer do not mention PBT.
    In 2015, the NCCN issued clinical oncology guidelines for prostate cancer and
    "Guidelines for Patients." The guidelines describe treatment options and the side
    effects of surgery; radiation therapy that uses "high-energy rays to treat cancer"; and
    photon radiation beams, "a stream of particles that have no mass or electric charge,"
    including three-dimensional conformal radiation therapy (3D-CRT), IMRT, and "proton
    beams." The 2015 NCCN Guidelines for Patients describes the three radiation
    therapies as follows:
    In 3D-CRT, the radiation beams match the shape of your tumor to avoid
    healthy tissues. IMRT is a more precise type of 3D-CRT that may be used
    especially for more aggressive prostate cancer. The radiation beam is
    divided into smaller beams, and the strength of each beam can vary. . . .
    Proton beams are a stream of positively charged particles that emit energy
    within a short distance.
    The 2015 NCCN Clinical Practice Guidelines in Oncology (2015 Guidelines) state
    that "external beam radiation therapy" such as IMRT is "one of the principle treatment
    options for clinically localized prostate cancer."
    Over the past several decades, [radiation therapy] techniques have
    evolved to allow higher doses of radiation to be administered safely. [3D-
    CRT] uses computer software to integrate Cr] images of the patients'
    internal anatomy in the treatment position, which allows higher cumulative
    doses to be delivered with lower risk of late effects. The second
    generation 3D technique, [IMRT], is used increasingly in practice because
    compared to 3D-CRT, it significantly reduces the risk of gastrointestinal
    toxicities and rates of salvage therapy in some, but not all studies,
    although treatment cost is increased.[2]
    1   Computerized tomography.
    2   Footnotes omitted.
    4
    No. 74600-6-1/5
    According to the 2015 Guidelines, the attempt to use dosimetric or treatment plan
    studies to try to compare IMRT and PBT is not meaningful and does not favor one
    treatment over the other.
    Proton Therapy
    . . . Proponents of proton therapy argue that this form of radiation therapy
    could have advantages over X-ray (photon) based radiations in certain
    clinical circumstances. X-ray based therapies like IMRT and proton
    therapy can deliver highly conformal doses to the prostate. Proton-based
    therapies will deliver less radiation dose to some of the surrounding
    normal tissues like muscle, bone, vessels and fat not immediately
    adjacent to the prostate. These tissues do not routinely contribute to the
    morbidity of prostate radiation, are relatively resilient to radiation injury,
    and so the benefit of decreased dose to these types of normal, non-critical
    tissues has not been apparent. The critical normal structures adjacent to
    the prostate that can create prostate cancer treatment morbidity include
    the bladder, rectum, neurovascular bundles, and occasionally small bowel.
    The weight of the current evidence about prostate cancer treatment
    morbidity supports the notion that the volume of the rectum and bladder
    that receives radiobiologically high doses of radiation near the prescription
    radiation dose is what accounts for the likelihood of long-term treatment
    morbidity, as opposed to higher volume lower dose exposures. Numerous
    dosimetric studies have been performed trying to compare X-ray based
    IMRT plans to proton therapy plans to illustrate how one or the other type
    of treatment can be used to spare the bladder or rectum from the higher
    dose parts of the exposure. . . . Although dosimetric studies in-silico can
    suggest that the right treatment planning can make an IMRT plan beat a
    proton therapy plan and vice-versa, they do not predict accurately
    clinically meaningful endpoints.
    The 2015 Guidelines conclude that absent randomized clinical trials directly comparing
    IMRT and PBT, there is "no clear evidence supporting a benefit or decrement to proton
    therapy over IMRT for either treatment efficacy or long-term toxicity."
    The 2015 Guidelines note that the American Society of Radiation Oncology
    (ASTRO) evaluated PBT and concluded PBT " `for primary treatment of prostate cancer
    5
    No. 74600-6-1/6
    should only be performed within the context of a prospective clinical trial or registry.' "3
    The ASTRO policy on PBT states:
    In the treatment of prostate cancer, the use of PBT is evolving as the
    comparative efficacy evidence is still being developed. In order for an
    informed consensus on the role of PBT for prostate cancer to be reached,
    it is essential to collect further data, especially to understand how the
    effectiveness of proton therapy compares to other radiation therapy
    modalities such as IMRT and brachytherapy. There is a need for more
    well-designed registries and studies with sizable comparator cohorts to
    help accelerate data collection. Proton beam therapy for primary
    treatment of prostate cancer should only be performed within the context
    of a prospective clinical trial or registry.
    Don't routinely recommend proton beam therapy for prostate cancer
    outside of a prospective clinical trial or registry.
    There is no clear evidence that proton beam therapy for prostate cancer
    offers any clinical advantage over other forms of definitive radiation
    therapy. Clinical trials are necessary to establish a possible advantage of
    this expensive therapy.
    Consistent with the clinical oncology guidelines, the 2015 NCCN Guidelines for
    Patients state, "To date, research hasn't shown that proton treatment is any better or
    worse for treating cancer or causing side effects."
    The United States Department of Health and Human Services Agency for
    Healthcare Research and Quality (AHRQ) also publishes guidelines for PBT. The
    AHRQ guideline states that "[m]embers of the working group do not currently
    recommend that patients with prostate cancer. . . be referred for proton beam
    radiotherapy, due to an insufficient evidence base."
    3 But the 2015 Guidelines also note there is currently an "ongoing prospective randomized trial
    accruing patients" to compare PBT to IMRT.
    6
    No. 74600-6-1/7
    Premera Medical Policy on PBT
    In July 2009, Premera issued a "Corporate Medical Policy" on "Charged Paiticle
    (Proton or Helium Ion) Radiation Therapy" based on "careful review of published peer
    reviewed scientific literature, national guidelines and local standards of practice."
    The policy describes clinical circumstances where PBT may be considered
    medically necessary.
    Charged particle irradiation with proton or helium ion beams may be
    considered medically necessary in the following clinical situations:
    •      Primary therapy for melanoma of the uveal tract (iris, choroid, or ciliary
    body), with no evidence of metastasis or extrascleral extension, and
    with tumors up to 24 mm[41 in largest diameter and 14[ imm in height.
    •      Postoperative therapy (with or without conventional high-energy X-
    rays) in patients who have undergone biopsy or partial resection of the
    chordoma or low grade (1 or 11) chondrosarcoma of the basisphenoid
    region (skull-base chordoma or chondrosarcoma) or cervical spine.
    Patients eligible for this treatment have residual localized tumor
    without evidence of metastasis.
    By contrast, the medical policy states PBT is not medically necessary for those
    "with clinically localized prostate cancer because the clinical outcomes. . . have not
    been shown to be superior to other approaches," such as IMRT.
    Charged-particle radiation with proton beams using standard treatment
    doses may be considered not medically necessary in patients with
    clinically localized prostate cancer because the clinical outcomes with this
    treatment have not been shown to be superior to other approaches
    including [IMRT] or conformal radiation therapy yet [PTB] is generally
    more costly than these alternatives.
    Denial of Request for PBT
    On November 12, 2009, Loma Linda University Medical Center (LLUMC)
    radiation oncologist Dr. David Bush sent Premera a letter to obtain preauthorization of
    nine weeks of daily PBT for Strauss.
    4   Millimeter.
    ,
    7
    No. 74600-6-1/8
    On November 18, Premera sent a letter to Strauss denying authorization of PBT.
    The letter states, in pertinent part:
    Charged-particle irradiation with proton beams using standard treatment
    doses may be considered not medically necessary in patients with
    clinically localized prostate cancer because the clinical outcomes with this
    treatment have not been shown to be superior to other approaches
    including intensity modulated radiation therapy (IMRT) or conformal
    radiation therapy yet proton beam therapy is generally more costly than
    these alternatives. . . .
    If you decide to receive this service, you will have to pay for it yourself.
    The letter provides a copy of the procedure for an internal appeal and for external
    review by an independent review organization (IRO).
    Level I Appeal of Denial of PBT
    On December 30, 2009, Strauss filed a "Level I Appeal." Strauss provided a
    letter from his cardiologist Dr. Douglas Stewart. Dr. Stewart admits there are no
    comparative studies for IMRT and PBT but states there is "strong preliminary evidence"
    that the side effects of PBT are "significantly lower." The letter states, in pertinent part:
    Radiation therapy is recommended and exists in two forms, the currently
    practiced conventional therapy and a newer form, porton [sic] beam
    radiation.
    Both techniques are approved. Comparative studies are not yet available.
    However, there is strong preliminary evidence that the side effects
    associated with [PBT] are significantly lower. As [Strauss'] cardiologist,
    considering his cardiac condition, I am advocating that he be approved for
    the [PBT].
    Premera submitted the Level I Appeal to the Medical Review Institute of America
    Incorporated (MRIoA) for review by an independent radiation oncologist. WAC 284-43-
    3110(6) (formerly WAC 284-43-525 (2010)) provides:
    Review of adverse determinations must be performed by health care
    providers or staff who were not involved in the initial decision, and who are
    No. 74600-6-1/9
    not subordinates of the persons involved in the initial decision. If the
    determination involves, even in part, medical judgment, the reviewer must
    be or must consult with a health care professional who has appropriate
    training and experience in the field of medicine encompassing the
    appellant's condition or disease and make a determination that is within
    the clinical standard of care for an appellant's disease or condition.151
    The MRIoA radiation oncologist concluded PBT was not medically necessary
    under the Premera policy. The January 8, 2010 report states, in pertinent part:
    Conclusion/Decision to Not Certify:
    Although there has been increased interest in the use of protons for the
    definitive treatment of prostate cancer recently, there is no evidence in the
    recent peer-reviewed medical literature of improved efficacy or reduced
    toxicity with the use of protons compared to photons. As protons are
    significantly more expensive, the treatment is defined as not medically
    necessary in this particular case according to the plan language.[61
    Premera denied the Level I Appeal.
    Level II Appeal of Denial of PBT
    On March 2, 2010, Strauss filed a "Level II Appeal." Dr. Bush submitted a letter
    in support of the appeal. Dr. Bush states that unlike IMRT, a proton beam interacts with
    human tissue differently with "a relatively low `entrance dose.'" By contrast, IMRT
    rays . . . deliver their highest dose relatively close to the skin surface." Dr. Bush
    acknowledged that IMRT is considered the " `gold standard' "and that the medical
    studies he cites are not randomized studies that directly compare PBT and IMRT. But
    Dr. Bush states the "benefit of conformal treatment techniques has been clearly
    established in the treatment of prostrate and other cancers" and PBT represents "the
    'ultimate' form of conformal treatment delivery because of their inherent superior dose
    deposition characteristics." Dr. Bush also states that "[p]ublished data from a number of
    5 See also former WAC 284-43-630 (2008) ("Independent review of adverse determinations.
    Carriers must use the rotational registry system of certified independent review organizations (IRO)
    established by the commissioner.")
    6 The report cites a number of published medical articles and studies in support of its decision.
    9
    No. 74600-6-1/10
    institutions" demonstrates the "efficacy in controlling prostate cancer" and "minimal risk
    of moderate to severe morbidity."
    Premera submitted the Level II Appeal to MRIoA. On April 6, a different MRIoA
    independent radiation oncologist concluded PBT was not medically necessary under the
    Premera policy.
    Medical necessity is not met in that alternative treatments are available
    with similar efficacy and toxicity, but at a significant reduction in cost.
    Additionally, there is considerable controversy in the radiation oncology
    community as to whether proton treatments should be considered a
    medically necessary treatment option for patients with localized prostate
    cancer, and it is therefore not in accordance with generally accepted
    standards of medical practice at this time. Therefore, proton treatment is
    considered not medically necessary in this particular case.
    Conclusion/Decision to Not Certify:
    Although there has been increased interest in the use of protons for the
    definitive treatment of prostate cancer recently, there is no evidence in the
    recent peer-reviewed medical literature of improved efficacy or reduced
    toxicity with the use of protons compared to photons. As protons are
    significantly more expensive, the treatment is defined as not medically
    necessary in this particular case according to the plan language. The
    additional documents submitted do not change the initial determination.m
    On April 9, a Premera appeal panel denied the request to approve payment of
    PBT for treatment of Strauss' intermediate-risk localized prostate cancer. The letter
    states, in pertinent part:
    It is the decision of the appeal panel to deny your request for an exception
    in this case. Proton Beam therapy is not medically necessary as it is
    generally more costly than other traditional treatments, such as surgery or
    external radiation for localized prostate cancer.
    Both the first and second independent review conducted by MR10A
    supported the company's medical policy that Proton Beam Therapy is not
    7   The report cites a number of published medical articles and studies in support of its decision.
    10
    No. 74600-6-1/11
    medically necessary. . . .
    In addition to both MRIoA reports, I have enclosed a copy of the
    company's medical policy. Please note that Premera's medical policy was
    updated on treatment of prostate cancer with a literature search using
    PubMed[8] through December 2009. The articles identified did not lead to
    any changes in the policy statement.
    IRO Review
    Strauss requested an external review of the decision to deny coverage. On July
    19, 2010, Premera requested external review of the Level II Appeal decision. Premera
    asked the Washington State Office of the Insurance Commissioner (01C) to select an
    IRO. The OIC designated Managing Care Managing Claims (MCMC) as the IRO.
    MCMC upheld the decision to deny coverage.
    •   "[T]he health plan should not cover the requested proton therapy."
    •   "Even though there are positive data available from Loma Linda and
    other centers for this technology in prostate cancer, other more
    established alternative treatments such as brachytherapy either with
    LDR[9] or HDR[1(1, IMRT and prostatectomy, have longer follow-up time
    and experience available and better known outcomes in terms of
    efficacy, toxicities and effects on quality of life."
    •   "Per NCCN, the recommended radiation therapy treatments for
    Prostate Cancer include 3D conformal therapy, IMRT and
    brachytherapy. There is no consensus or mentioning of Proton
    therapy."
    •   "A search in clinicaltrials.gov supports that this type of treatment is
    currently undergoing several phase II studies."
    The MCMC radiation oncologist concluded:
    There are other standard treatment options available to the patient which
    he is a good candidate. These standard treatment options include radical
    prostatectomy either open or robotic (this was offered by patient's
    urologist), external beam radiotherapy either IMRT or 3D conformal
    8 PubMed is an online database of biomedical literature, journal articles, and books.
    9 Low-dose rate.
    10 High-dose rate.
    11
    No. 74600-6-1/12
    therapy and brachytherapy either LDR or HDR. There is an abundance of
    medical data and experience to support these treatment options with
    known efficacy, toxicity, and quality of life. In contrast, clinical evidence to
    support proton therapy for prostate cancer is limited in terms of efficacy,
    toxicity and effects on quality of life. A search in clinicaltrials.gov supports
    that this type of treatment is currently undergoing several phase 11 studies.
    Per NCCN, the recommended radiation therapy treatments for Prostate
    Cancer include 3D conformal therapy, IMRT and brachytherapy. There is
    no consensus or mentioning of Proton therapy.[11]
    Strauss decided to undergo PBT at LLUMC with Dr. Bush. Strauss began PBT
    treatment in February 2010 and successfully ended PBT in April 2010.
    Complaint for Damages against Premera
    On August 1, 2013, Strauss and his spouse Michelle Strauss (collectively,
    Strauss) filed a complaint for damages against Premera. Strauss alleged breach of
    contract, that the denial of coverage was "without reasonable justification and therefore
    in bad faith," and violation of the Consumer Protection Act (CPA), chapter 19.86 RCW.
    Strauss sought damages for the cost of PBT, bad faith damages, and treble damages
    under the CPA.
    In October 2015, Strauss' expert witness Dr. George Laramore, the former
    University of Washington Department of Radiation Oncology Chair, issued a 13-page
    report. The report describes the diagnosis and treatment of Strauss using PBT and
    cites medical studies to conclude PBT was medically necessary for Strauss. The report
    states:
    Proton radiotherapy is a safe and effective form of treatment for
    patients with localized prostate cancer. It was an appropriate choice for
    Mr. Strauss. This is supported not only by the published literature at the
    time of his diagnosis but also in subsequent work. As such, it meets the
    standard of being "medically necessary."
    11 The   report cites a number of published medical articles and studies in support of its decision.
    12
    No. 74600-6-1/13
    Dr. Laramore concedes IMRT and PBT are equivalent in treating prostate cancer
    but states the two treatments are not equivalent "in terms of the side effect profile."
    [W]hile IMRT and proton radiotherapy to biologically-equivalent tumor
    doses may be expected to give approximately the same tumor control
    probability, they are not equivalent in terms of the side effect profile and so
    the overall therapeutic results are not equivalent but would be better with
    proton radiotherapy.[12]
    Dr. Laramore concedes there are no "direct randomized trials" comparing IMRT and
    PBT but states he can "infer the advantages and disadvantages" from medical studies.
    On November 12, 2015, Premera expert Dr. Tomasz Beer, director of the
    prostate cancer research program at the Knight Cancer Institute of Oregon Health and
    Science University, issued a 23-page report addressing the use of PBT and IMRT for
    Strauss' localized intermediate-risk prostate cancer. Dr. Beer states that because IMRT
    is the standard treatment and PBT "has never been compared head to head to
    conventional [IMRT] therapy. . . , it cannot be said that [PTB] is superior." Dr. Beer
    concludes the "available data are insufficient to make definitive statements about how
    proton therapy compares to IMRT with respect to side effects" and PBT "has not been
    shown to have a clinical advantage over other forms of radiation."
    Proton therapy is not a standard treatment for prostate cancer and has
    never been studied in a proper randomized trial. It is probably reasonable
    to suspect that with regard to cancer control, proton therapy yields similar
    results to conventional therapy — although it would be correct to say we
    don't really know that to be true. The available data are insufficient to
    make definitive statements about how proton therapy compares to IMRT
    with respect to side effects — but one can safely conclude that there is no
    evidence of an advantage with respect to bladder and bowel side effects
    or other potential adverse effects. If there is a difference — which we do
    not know, the data actually suggest a bit of an advantage for IMRT —
    although this is far from definitive. Authoritative bodies that are beyond
    reproach, such as the NCCN and [ASTRO] strongly agree that [PBT] has
    not been shown to have a clinical advantage over other forms of radiation.
    12   Emphasis in original.
    13
    No. 74600-6-1/14
    [PBT] is not a standard of care, and should not be recommended to
    patients outside of a properly designed clinical trial.
    Motion for Summary Judgment Dismissal
    Premera filed a motion for summary judgment dismissal of the lawsuit. Premera
    argued Strauss could not meet his burden to show PBT was "medically necessary"
    under the policy. Premera asserted there was no dispute that PBT is more costly than
    IMRT or that PBT and IMRT result in equivalent therapeutic outcomes. Premera
    pointed out there were no studies that directly compare PBT and IMRT. Premera also
    pointed out that Dr. Laramore admitted he did not consider the NCCN guidelines and
    instead relied on cross studies and theoretical models.
    Premera submitted a number of exhibits, including the NCCN guidelines; the
    report of Dr. Beer; excerpts of depositions, including the deposition of Dr. Stewart, Dr.
    Bush, and Dr. Laramore; and the report of Prostate Cancer Center of Seattle Executive
    Director Dr. Peter Grimm.
    Dr. Stewart testified that because there are "no randomized studies" that
    compare PBT and IMRT, he was "hesitant" to write the letter in support of Strauss'
    administrative appeal. Dr. Stewart said the "idea" of PBT having fewer side effects was
    "theoretical." Dr. Stewart testified that he wrote the letter based on "the hope that [PBT]
    would have fewer side effects."
    Dr. Bush testified that there are no oncology guidelines that recommend PBT
    over IMRT. Dr. Bush testified there is a current ongoing randomized study but no
    published randomized studies directly comparing PBT and IMRT. Dr. Bush testified
    tumor control using PBT and IMRT is equivalent. With regard to whether "there is a
    14
    No. 74600-6-1/15
    difference in [PBT and IMRT] side effects," Dr. Bush testified, "[T]hat's a hard question
    to answer. There's data to support, I think, both sides."
    You know, it can be demonstrated that less tissue gets radiated. That's
    something that's usually pretty easy to show and is, I think, agreed upon.
    To show that the side effects are, in a scientific way, right, that proves that
    side effects are substantially less with proton, I would say the evidence as
    of today is not as strong as we would like to see. It's something that's still
    evolving but there is some. There is some.
    Dr. Bush agreed that many of the medical studies he relied on were based on
    theoretical models.
    Dr. Laramore also testified that medical studies show "equivalent control" of
    prostate cancer with PBT and IMRT. But Dr. Laramore believed there were fewer side
    effects from PBT. Dr. Laramore testified that PBT was superior in "maintaining sexual
    potency with testosterone levels not falling with protons, but falling with IMRT," and
    there were fewer risks of secondary cancer. Dr. Laramore testified PBT is more costly
    than IMRT.
    Dr. Laramore conceded he did not rely on the NCCN guidelines in preparing his
    report and reaching his conclusions. Dr. Laramore testified there "has not been the gold
    standard of a randomized study" and because "there have been no randomized trials at
    this stage," he had "to look at literature and kind of infer differences."
    Dr. Grimm addressed Dr. Laramore's report and deposition testimony. Dr.
    Grimm agreed that "there have not been randomized studies to directly compare Proton
    therapy with IMRT" and that PBT and IMRT "have the same cancer control rate at 5
    years out from treatment." Dr. Grimm agreed PBT "was a reasonable choice of
    treatment" for Strauss but states PBT was "not medicallinecessary" under the policy.
    15
    No. 74600-6-1/16
    Dr. Grimm described the limitations of the studies Dr. Laramore relies on to
    support his opinion that PBT has fewer side effects than IMRT. For example, Dr.
    Grimm states:
    [T]he Shipley article. . . was a comparison between two similarly dosed
    patients groups, one receiving proton boost of 25.2 Gy[131 after 50.4
    Gy conformal photon therapy and the other receiving a similar photon
    therapy followed by 1.8 Gy photon conformal treatment (not IMRT). The
    study stated, "We found no significant differences in [overall survival],
    [disease specific survival], TRFSE141 or local control between the two
    arms." [TRFS] was defined as clinically free, prostate specific antigen
    (PSA) less than 4[nanogram]/[milliliter] and a negative prostate rebiopsy.
    Only a small select group was found to have an improvement in local
    control, i.e. poorly differentiated cancer. As previously noted by Dr[.]
    Laramore, the control rate for IMRT and protons in the current era are
    similar. This study evaluated different doses and techniques than those
    delivered today, and different from those delivered when Mr. Strauss was
    treated. Therefore, this observation should not be construed as any
    advantage of protons over IMRT, particularly as the doses given for both
    IMRT and protons currently prescribed and as were given for Mr. Strauss
    are the same and would be expected to have the same cancer control
    outcomes.
    . . . The PROG study compared two Proton doses schedules, 79.2
    Gy vs 70.2 Gy which determined the 79 Gy arm had better cancer control.
    This 79 Gy arm had an 83% long term 10 year biochemical control rate for
    low risk disease, similar to current IMRT results.[151
    With respect to sexual function side effects, Dr. Grimm states:
    Sexual function comparisons, as reported here by Dr[.] Laramore, used
    general terms and are not stratified by age, or other factors which have a
    bearing on long term sexual function. There is no data presented here
    that suggests that protons have a documented improved ability to avoid
    dose to the penile bulb better than IMRT. Dose to the penile bulb is a
    targeting issue not a specific treatment issue. It is not necessary to treat
    the penile bulb under either treatment. While the lowering of testosterone
    may be due to scattered radiation, the effect is temporary for IMRT and
    testosterone levels return to near normal within 1 year with both
    treatments . . . .
    13 Gray.
    14 Total recurrence-free survival.
    15 Footnotes omitted.
    16
    No. 74600-6-1/17
    . . . Dr. Laramore states that the effect on testosterone is greater
    with IMRT than with surgery. However the effect is. . . very short lived,
    with testosterone typically returning to near pretreatment levels within a
    year with either modality. . . . Potency rates issues suggesting better
    potency in proton patients in Hoppe reference were short term and the
    study was only in healthy men less than 60 years old, a highly select
    group, and not a comparable group to the general IMRT population. Dr.
    Laramore admits there may be a mismatch between any comparison.061
    As to Dr. Laramore's opinion on secondary malignancy, Dr. Grimm states:
    Regarding secondary malignancies, there are no direct comparisons of
    the risk of secondary malignancies between IMRT and protons. The one
    attempt at comparison, the Fontenot article, was an article based on
    conjectural evidence on dose estimates from 3 patients and applying a
    theoretical model of presumed, not actual dose to patients from IMRT.
    Not a scientific study.071
    Premera also relied on a federal district court case that addressed the exact
    same "medically necessary" policy language and the expert testimony of Dr. Laramore
    on side effects. See Baxter v. MBA Group Insurance Trust Health and Welfare Plan,
    
    958 F. Supp. 2d 1223
    (W.D. Wash. 2013). In Baxter, the court concluded on summary
    judgment that the plaintiff could not show there was a genuine issue of material fact as
    to "whether proton therapy is superior to IMRT." 
    Baxter, 958 F. Supp. 2d at 1237-38
    .
    Plaintiff has not met his burden to show that there is a genuine issue of
    material fact whether proton therapy is superior to IMRT. The current non-
    randomized observational studies demonstrate that proton therapy
    provides equivalent treatment to IMRT in terms of cancer control and side-
    effects. Plaintiff focuses on studies involving mathematical modeling that
    show that the long-term risk of developing a secondary malignancy may
    be higher with proton therapy. . . . No study cited by either party provides
    statistically significant evidence that one therapy is superior to the other.
    
    Baxter, 958 F. Supp. 2d at 1237-38
    .
    In opposition to summary judgment, Strauss argued there were genuine issues of
    material fact as to whether PBT is medically necessary—"at the very least. . . there are
    16   Footnote omitted.
    17   Footnote omitted.
    17
    No. 74600-6-1/18
    questions of fact on whether Proton Beam Radiation Therapy is superior to IMRT as far
    as side effects." Strauss submitted the letter from Dr. Bush in support of the Level 11
    Appeal, the medical studies cited by Dr. Bush: the report and declaration of Dr.
    Laramore, and excerpts of depositions, including the deposition of Dr. Bush, Dr.
    Laramore, and Strauss.
    In reply, Premera argued reliance on medical experts' theoretical assumptions
    and inferences on side effects did not establish PBT was medically necessary or create
    a material issue of fact.
    The court granted the motion for summary judgment and dismissed the lawsuit.
    Appeal
    Strauss argues the court erred in granting summary judgment dismissal of his
    lawsuit. We review summary judgment de novo. Hartley v. State, 103 Wn .2d 768, 774,
    
    698 P.2d 77
    (1985). Summary judgment is appropriate when there is no genuine issue
    of material fact and the moving party is entitled to judgment as a matter of law. CR
    56(c).
    The defendant on summary judgment has the burden of showing the absence of
    evidence to support the plaintiffs case. Young v. Key Pharms., Inc., 
    112 Wash. 2d 216
    ,
    225, 
    770 P.2d 182
    (1989). Once the moving party shows an absence of a genuine
    issue of material fact, the burden shifts to the nonmoving party. 
    Young, 112 Wash. 2d at 225
    .
    While we construe the evidence and reasonable inferences in the light most
    favorable to the nonmoving party, if the nonmoving party" 'fails to make a showing
    sufficient to establish the existence of an element essential to that party's case, and on
    18
    No. 74600-6-1/19
    which that party will bear the burden of proof at trial,' "summary judgment is proper.
    
    Young, 112 Wash. 2d at 225
    (quoting Celotex Corp. v. Catrett, 
    477 U.S. 317
    , 322, 106 S.
    Ct. 2548, 
    91 L. Ed. 2d 265
    (1986)); Jones v. Allstate Ins. Co., 
    146 Wash. 2d 291
    , 300-01,
    
    45 P.3d 1068
    (2002). Questions of fact may be determined on summary judgment as a
    matter of law where reasonable minds could reach but one conclusion. Smith v. Safeco
    Ins. Co., 
    150 Wash. 2d 478
    , 485, 
    78 P.3d 1274
    (2003).
    The nonmoving party may not rely on speculation to create a material issue of
    fact. Ranger Ins. Co. v. Pierce County, 
    164 Wash. 2d 545
    , 552, 
    192 P.3d 886
    (2008).
    "[M]ere allegations, denials, opinions, or conclusory statements" do not establish a
    genuine issue of material fact. Intl Ultimate, Inc. v. St. Paul Fire & Marine Ins. Co., 
    122 Wash. App. 736
    , 744, 
    87 P.3d 774
    (2004).
    Interpretation of an insurance contract is a question of law that we also review de
    novo. Overton v. Consol. Ins. Co., 
    145 Wash. 2d 417
    , 424, 
    38 P.3d 322
    (2002); Quadrant
    Corp. v. Am. States Ins. Co., 
    154 Wash. 2d 165
    , 171, 
    110 P.3d 733
    (2005). We construe
    insurance policies as contracts. Kut Suen Lui v. Essex Ins. Co., 
    185 Wash. 2d 703
    , 710,
    
    375 P.3d 596
    (2016). The principles of contract interpretation apply. Quadrant 
    Corp., 154 Wash. 2d at 171
    . If the language in an insurance contract is not ambiguous, the court
    must enforce it as written. State Farm Mut. Auto. Ins. Co. v. Ruiz, 
    134 Wash. 2d 713
    , 721,
    
    952 P.2d 157
    (1998).
    Under RCW 48.18.520, we construe an insurance contract according to the
    entirety of its terms and conditions as set forth in the policy and as modified by any
    endorsement made a part of the policy. Kut Suen 
    Lui, 185 Wash. 2d at 711
    . If a term is
    defined in a policy, the term should be interpreted in accordance with that policy
    19
    No. 74600-6-1/20
    definition. Kitsap County v. Allstate Ins. Co., 
    136 Wash. 2d 567
    , 576, 
    964 P.2d 1173
    (1998).
    Insurance policies are liberally construed to provide coverage wherever possible.
    W. Nat'l Assurance Co. v. Shelcon Constr. Grp. LLC, 
    182 Wash. App. 256
    , 261, 
    332 P.3d 986
    (2014). The party seeking to establish coverage bears the initial burden of proving
    coverage under the policy. Pleasant v. Regence BlueShield, 
    181 Wash. App. 252
    , 261-
    62, 
    325 P.3d 237
    (2014).
    If the insured claims the insurer denied coverage unreasonably in bad faith, then
    the insured must come forward with evidence that the insurer acted unreasonably.
    
    Smith, 150 Wash. 2d at 486
    . The insurer is entitled to summary judgment if reasonable
    minds could not differ that its denial of coverage was based upon reasonable grounds.
    
    Smith, 150 Wash. 2d at 486
    .
    Strauss contends the testimony of Dr. Bush and Dr. Laramore and the peer-
    reviewed medical studies they relied on create a genuine issue of material fact as to
    whether PBT results in fewer side effects and is medically necessary under the
    language of the Premera policy.
    The January 1, 2008 Premera contract endorsement defines "medically
    necessary" services as "not more costly than an alternative service. . . at least as likely
    to produce equivalent therapeutic or diagnostic results as to the diagnosis or treatment
    20
    No. 74600-6-1/21
    of that patient's illness, injury or disease."18
    Strauss does not dispute that PBT is more costly than IMRT19 or that PBT and
    IMRT are equally effective in treating prostate cancer. Therefore, Strauss concedes he
    must show PBT results in superior or fewer side effects than IMRT.
    The testimony of Dr. Laramore and Dr. Bush and the peer-reviewed medical
    studies they rely on do not create a material issue of fact on side effects. The
    undisputed record establishes there were no published clinical studies directly
    comparing PBT and IMRT. Accordingly, Dr. Laramore and Dr. Bush cite published
    medical studies to support the opinion that PBT results in fewer side effects than IMRT.
    Dr. Laramore and Dr. Bush draw inferences from the studies and theoretical models to
    conclude PBT is superior to IMRT. Dr. Laramore testified that "because there . . . have
    been no randomized trials at this stageM . . . that's what I mean by having to look at
    literature and kind of infer differences." Dr. Laramore admits his opinion that PBT is
    superior for the risk of contracting secondary cancers is "theoretical." Dr. Laramore
    testified that he based his opinion on the superiority of PBT over IMRT regarding sexual
    potency on the "assumptions" that "patient groups are basically equivalent" across two
    different studies. Dr. Laramore based his opinion on the side effects from radiation to
    the rectal wall on one medical study.
    19 (Emphasis added.) As previously noted, the policy defines "generally accepted standards of
    medical practice" as follows:
    For these purposes, "generally accepted standards of medical practice" means standards
    that are based on credible scientific evidence published in peer reviewed medical
    literature generally recognized by the relevant medical community, physician specialty
    society recommendations and the views of physicians practicing in relevant clinical areas
    and any other relevant factors.
    19 There is no dispute that PBT was "[c]linically appropriate" and complied with "generally
    accepted standards of medical practice."
    21
    No. 74600-6-1/22
    Because the record establishes there are peer-reviewed medical studies that
    show the side effects of PBT may be superior to IMRT and other peer-reviewed medical
    studies that show the side effects of IMRT may be superior to PBT, reasonable minds
    could only conclude that absent clinical evidence directly comparing PBT and IMRT, the
    treatments are equivalent and Strauss cannot show PBT was medically necessary. See
    also 
    Baxter, 958 F. Supp. 2d at 1234
    (rejecting argument that the side effects of PBT are
    superior to IMRT).
    We affirm summary judgment dismissal of the lawsuit for breach of contract, bad
    faith, and violation of the CPA.2°
    og,
    WE CONCUR:
    2° We therefore deny Strauss' request for attorney fees on appeal.
    22