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    v1.0.31
    OpenPayerPolicy UpdatesClinical/Medical PolicyWashington HCA Dental Coverage Update | OpenPayer
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    CurrentWashington State Health Care AuthorityPolicy N/A

    Dental Treatment Coverage and Dental Necessity

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    This document explains that the Uniform Dental Plan and DeltaCare do not require preauthorization for dental treatment. Treatment is covered only when it is dentally necessary, satisfies the stated clinical criteria, and is included under the applicable plan benefits.

    Policy Summary
    PayerWashington State Health Care Authority
    PolicyDental Treatment Coverage and Dental Necessity
    Policy CodePolicy N/A
    Change TypeNo material change
    Effective DateN/A
    Next Review DateN/A
    Key ActionConfirm that the treatment is dentally necessary, meets all clinical criteria, and is included in the applicable plan benefits.
    SourceLink
    POLICY UPDATE CHANGES

    No material clinical or coverage changes in this revision.

    2Dental plans addressed
    5Required components of dental necessity
    3Evidence levels used
    AnnualClinical criteria update frequency

    Dental Coverage Criteria

    OpenPayer is powered by Trek Health's payer performance platform. Trek continuously ingests, validates, and normalizes Transparency in Coverage data alongside payer policies and other commercial payer data to create a structured payer intelligence foundation. OpenPayer uses this foundation to deliver personalized search results, dynamically generated policy pages, and tailored policy monitoring based on each user's payers, specialties, billing codes, and areas of interest. The same intelligence powers broader payer performance workflows, including reimbursement benchmarking, contract evaluation, payer negotiations, and financial decision-making.

    Dental Necessity

    A service is dentally necessary when it is recommended by a treating provider and ALL of the following conditions are met.

    ALL of the following

    • The service, supply, or intervention is recommended by a treating provider who has personally evaluated the patient.
    • The purpose of the service, supply, or intervention is to treat a dental condition.
    • It is the appropriate level of service, supply, or intervention considering the potential benefits and harm to the patient.
    • The level of service, supply, or intervention is known to be effective in improving health outcomes.
    • The level of service, supply, or intervention recommended for the condition is cost-effective compared with alternative interventions, including no intervention.
    The Uniform Dental Plan and DeltaCare do not require preauthorization for dental treatment.
    These criteria do not imply or guarantee approval. Check with the plan to ensure coverage. Preauthorization requirements are only valid for the month published and may have changed from previous months or may change in the future.

    Date of issue: November 1, 2026.

    Effectiveness and Evidence Standards

    Effectiveness and evidence are assessed according to whether the intervention is new or existing and according to the available level of evidence.

    Applicable standards and definitions

    • An intervention is effective when it can reasonably be expected to produce the intended results and its expected benefits outweigh its potential harmful effects.
    • Health outcomes are results that affect health status, measured by the length or quality—primarily as perceived by the patient—of the person's life.
    • A health intervention is an item or service delivered or undertaken primarily to prevent, diagnose, detect, treat, or palliate a dental condition, or to maintain or restore functional ability. For dental-necessity purposes, the intervention includes the dental condition and the patient indications for which it is being applied.
    • An intervention is new when it is not yet in widespread use for the dental condition and patient indications being considered.

    Provider Coverage and Billing Actions

    Denial Risk

    Dental-Necessity Criteria Must Be Met

    No preauthorization is required for dental treatment under the Uniform Dental Plan or DeltaCare. Coverage still depends on the treatment being recommended by the treating provider and meeting all dental-necessity conditions; treatment that fails any condition may not be covered.

    • The service, supply, or intervention must treat a dental condition.
    • It must be the appropriate level of service considering potential benefits and harm to the patient.
    • It must be known to be effective in improving health outcomes.
    • It must be cost-effective compared with alternative interventions, including no intervention.
    • For new interventions, effectiveness is determined by scientific evidence; for existing interventions, use scientific evidence first, then professional standards, then expert opinion.
    Billing Rule

    Verify Applicable Plan Benefits

    Confirm that the planned treatment is included under the applicable Uniform Dental Plan or DeltaCare benefits and follow the plan’s benefit limitations. Refer to the applicable Certificate of Coverage for specific covered benefits.

    • Preauthorization is not required, but benefit coverage and dental necessity requirements still apply.
    • Use the applicable Certificate of Coverage to verify plan benefits and limitations.

    Policy Background

    Dental necessity is determined from the treating provider’s recommendation and whether the proposed service, supply, or intervention appropriately treats a dental condition. The review considers whether the intervention is the appropriate level of service given its potential benefits and harms, is expected to improve health outcomes, and is cost-effective compared with alternatives, including no intervention. The applicable evidence standard is also considered: scientific evidence is used for new interventions and is considered first for existing interventions, followed when necessary by professional standards of care or expert opinion.

    Definitions

    Dental necessity
    RecommendationThe service must be recommended by a treating provider.
    PurposeThe service, supply, or intervention must treat a dental condition.
    Appropriate levelThe level of service, supply, or intervention must be appropriate considering potential benefits and harm to the patient.
    EffectivenessThe service, supply, or intervention must be known to be effective in improving health outcomes.
    Cost and evidenceIt must be cost-effective compared with alternatives, including no intervention, and meet the applicable evidence standard for new or existing interventions.
    Cost-effective
    Economic efficiencyBenefits and harms relative to costs must represent an economically efficient use of resources for patients with the condition.
    Patient characteristicsThe individual patient's characteristics are determinative when applying the criterion.
    PriceCost-effective does not necessarily mean the lowest price.
    Effective
    Expected resultsThe intervention, supply, or level of service can reasonably be expected to produce the intended results.
    Benefits and harmsExpected benefits must outweigh potential harmful effects.
    ScopeThe definition applies to an intervention, supply, or level of service.
    Health outcomes
    MeaningHealth outcomes are results that affect health status.
    MeasurementThey are measured by the length or quality of a person's life.
    Patient perspectiveQuality is measured primarily as perceived by the patient.
    Health intervention
    Primary purposesA health intervention is an item or service delivered or undertaken primarily to prevent, diagnose, detect, treat, or palliate a dental condition.
    Functional abilityIt may also be used to maintain or restore functional ability.
    Dental conditionA dental condition includes disease, illness, injury, genetic or congenital defect, or a biological condition outside normal, age-appropriate human variation.
    ApplicationThe definition includes the intervention itself, the dental condition, and the patient indications for which it is applied.
    New intervention
    DefinitionA new intervention is not yet in widespread use for the dental condition and patient indications being considered.
    Limited clinical trialsWhen clinical trials have not been conducted because of epidemiological reasons, such as rare or new diseases or orphan populations, the intervention is evaluated using professional standards of care or expert opinion.
    Evidence considerationThe applicable evaluation focuses on the dental condition and patient indications under consideration.
    Existing intervention
    Evidence priorityScientific evidence should be considered first and, to the greatest extent possible, should be the basis for dental-necessity determinations.
    When evidence is unavailableIf scientific evidence is unavailable, professional standards of care should be considered.
    When standards are insufficientIf professional standards of care do not exist, or are outdated or contradictory, decisions may be based on expert opinion.
    Coverage implicationPriority given to scientific evidence does not mean coverage should be denied when conclusive scientific evidence is absent.
    Scientific evidence
    Primary evidenceScientific evidence consists primarily of controlled clinical trials that directly or indirectly demonstrate the intervention's effect on health outcomes.
    Alternative evidenceWhen controlled clinical trials are unavailable, observational studies demonstrating a causal relationship between the intervention and health outcomes may be used.
    Suggestive evidencePartially controlled observational studies and uncontrolled clinical series may be suggestive but do not by themselves demonstrate a causal relationship.
    ExceptionSuch studies may demonstrate a causal relationship when the observed effect exceeds anything explainable by the condition's natural history or potential experimental biases.
    Treating provider
    DefinitionA treating provider is a health care provider who has personally evaluated the patient.
    Patient evaluationThe provider's role is based on a personal evaluation of the patient, not solely on information supplied by others.
    Coverage relevanceThe treating provider is the provider who recommends a service when dental-necessity criteria are applied.
    Policy Summary
    PayerWashington State Health Care Authority
    PolicyDental Treatment Coverage and Dental Necessity
    Policy CodePolicy N/A
    Change TypeNo material change
    Effective DateN/A
    Next Review DateN/A
    Key ActionConfirm that the treatment is dentally necessary, meets all clinical criteria, and is included in the applicable plan benefits.
    SourceLink
    On This Page
    Dental Coverage CriteriaProvider Coverage and Billing ActionsPolicy BackgroundDefinitions
    A service, supply, or intervention is cost-effective when its benefits and harms relative to costs represent an economically efficient use of resources for patients with the condition. In an individual case, the characteristics of the individual patient are determinative; cost-effective does not necessarily mean the lowest price.

  1. For new interventions

    • When clinical trials are available, effectiveness is determined by scientific evidence.
    • When clinical trials have not been conducted because of epidemiological reasons, such as a rare or new disease or an orphan population, effectiveness is evaluated using professional standards of care or expert opinion.

  2. For existing interventions

    • Scientific evidence is considered first and, to the greatest extent possible, is the basis for determining dental necessity.

    • If scientific evidence is unavailable

      • Professional standards of care are considered.
      • If professional standards of care do not exist, or are outdated or contradictory, the decision is based on expert opinion.
  3. Giving priority to scientific evidence for existing interventions does not mean coverage should be denied when conclusive scientific evidence is absent.

  4. Scientific evidence

    • Scientific evidence consists primarily of controlled clinical trials that directly or indirectly demonstrate the intervention's effect on health outcomes.
    • If controlled clinical trials are unavailable, observational studies demonstrating a causal relationship between the intervention and health outcomes may be used.
    • Partially controlled observational studies and uncontrolled clinical series may be suggestive, but do not by themselves demonstrate a causal relationship unless the magnitude of the observed effect exceeds anything that could be explained by the natural history of the dental condition or potential experimental biases.