CurrentProvidence Health PlanPolicy 456

Laboratory Testing Services

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Defines Medicare medical policy coverage and medical necessity criteria for laboratory and diagnostic testing services for Providence Medicare products; applies to ordering providers, laboratories, and claim reviewers.

Policy Summary

PayerProvidence Health Plan

PolicyLaboratory Testing Services

Policy CodePolicy 456

Change TypeNo material clinical or coverage changes

Effective DateJun 1, 2026

Last ReviewJun 1, 2026

Next Review DateMar 1, 2027

Key ActionWhen no applicable NCD/LCD exists, ensure tests are ordered by the treating provider, document signs/symptoms and intended use of results, and confirm analytic validity and clinical utility to support medical necessity.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

Medicare OnlyProduct applicability

2026-06-01policy effective date

NoneCPT codes listed

NoneHCPCS codes listed

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CurrentProvidence Health PlanPolicy 456

Laboratory Testing Services

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Sign up for Providence Health Plan Policy 456 alerts

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Policy Summary

PayerProvidence Health Plan

PolicyLaboratory Testing Services

Policy CodePolicy 456

Change TypeNo material clinical or coverage changes

Effective DateJun 1, 2026

Last ReviewJun 1, 2026

Next Review DateMar 1, 2027

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

Medicare OnlyProduct applicability

2026-06-01policy effective date

NoneCPT codes listed

NoneHCPCS codes listed

Coverage and Medical Necessity Criteria

Medically reasonable and necessary laboratory testing

Covered when ALL of the following are met:

General coverage criteria: 1) Ordered by a physician or other healthcare provider who is treating the member for a specific medical problem, condition, or injury; 2) The ordering provider has documented how they will promptly use the test results to directly manage that condition; 3) The member has signs or symptoms related to the test performed (unless statute allows preventive service); 4) The test has proven clinical utility and analytical validity (FDA approval/clearance OR peer-reviewed evidence of accuracy, precision, sensitivity, specificity, reproducibility); 5) Ordered and performed according to manufacturer's/FDA intended indications; 6) Not duplicate or overlap with other diagnostic services; 7) Performed at a medically reasonable frequency and appropriate duration.

These criteria apply when no applicable NCD/LCD exists; for tests with NCD/LCD, compliance with those documents is required.

Diagnostic laboratory testing — medical necessity

Covered when ALL of the following are met:

Medicare medical necessity: Test is ordered for diagnostic purposes to rule out or confirm a suspected diagnosis because of documented sign(s) and/or symptom(s)

Provider must document the clinical sign or symptom that justifies testing (see Documentation requirements).

Appropriateness and setting: Service is appropriate in duration and frequency, furnished in accordance with accepted standards of medical practice and in an appropriate setting by qualified personnel

Includes consideration of alternatives and that the service does not exceed medical need; frequency utilization may be audited.

Regulatory and evidence prerequisites: Device/test has necessary regulatory status and proven analytic validity and clinical utility; FDA clearance/approval alone does not establish medical necessity

Coverage also depends on benefit category, coding, and applicable NCD/LCD or other CMS guidance.

Tests performed in the absence of signs, symptoms, complaints, or relevant personal history (screening) are generally excluded from coverage unless explicitly authorized by statute or identified as a covered preventive service. Examples include tests to determine risk for developing a disease, tests required by employers or third parties, and other screening uses that do not document a current medical problem. Such screening tests do not meet Medicare's requirement that services be reasonable and necessary for diagnosis or treatment and therefore are not covered under this policy except where law provides otherwise.

Under Medicare policy, screening—defined as testing performed in the absence of signs, symptoms, complaints, or personal history of disease or injury—is not covered unless a statute explicitly authorizes it as a preventive service. CMS guidance states that tests performed without clinical indication are non‑covered; providers should therefore document clinical signs, symptoms, or a medical history that justifies diagnostic testing when submitting claims.

Testing services will be considered not medically necessary when applicable NCD/LCD/LCA criteria are not met, when claims lack an ICD‑10‑CM diagnosis code listed as covered in the applicable Medicare coverage policy, when testing exceeds frequency limits in an applicable NCD/LCD/LCA, when not ordered by the treating provider (including DTC/OTC tests), when the performing laboratory lacks an appropriate CLIA certificate, or when the test does not provide data that will be directly used to manage a specific medical problem.

Per Title XVIII, Section 1862(a)(1)(A), screening laboratory tests without a clinical indication are considered not reasonable and necessary and are not covered. Even if a test yields clinically valid information, the absence of a documented sign, symptom, or personal history that connects the test to diagnosis or treatment means Medicare coverage is not available under this policy.

When Laboratory Testing Is Covered

Diagnostic testing for a specific medical problem with signs/symptoms where results will directly inform management

Covered when ALL of the following are met:

Treating provider ordering: Test is ordered by a physician or practitioner who is treating the beneficiary for the specific medical problem

Ordering provider must document that they are treating the member for the condition and will use results to manage care.

Analytic validity and clinical utility: The test has demonstrated analytic validity and proven clinical utility for the indicated condition (e.g., FDA approval/clearance or peer-reviewed evidence showing accuracy, precision, sensitivity, specificity, reproducibility)

Results must be actionable and directly used to manage the beneficiary's specific medical problem.

Intended use documented: The ordering provider has documented in the medical record how they will promptly use the test results to directly inform and manage the member's specific medical problem

Coding and Medical Necessity Considerations

Medical necessity considerations — Appropriate use criteria

Appropriateness (duration & frequency)Service must be appropriate in duration and frequency and meet but not exceed the medical need.

Qualified personnelOrdered and furnished by qualified personnel in a setting appropriate to the member's medical needs.

Accepted standards of practiceFurnished in accordance with accepted standards of medical practice for the condition.

Alternative comparatorsService must be at least as beneficial as available medically appropriate alternatives.

Use in utilization reviewReviews include frequency/utilization to ensure services do not exceed medical need.

Provider Responsibilities and Prior Authorization

Prior Authorization

Prior authorization / medical necessity review expectations

When no applicable NCD/LCD exists, the ordered test must be: 1) ordered by a treating physician or other healthcare provider for a specific medical problem; 2) accompanied by documentation showing how the provider will promptly use the test results to directly manage that condition; 3) for a member with signs or symptoms related to the test (unless Medicare statute allows preventive service); and 4) the test must have proven clinical utility and analytical validity (FDA approval/clearance or peer-reviewed evidence of accuracy, precision, sensitivity, specificity, reproducibility). Compliance with an applicable NCD/LCD is required where those exist.

Ordered by treating provider for a specific medical problem and documented plan to use results to manage that condition.
Member must have signs or symptoms related to the test (unless a covered preventive service).
Test must demonstrate analytical validity and clinical utility (FDA clearance/peer-reviewed evidence).
If an applicable NCD/LCD exists, comply with that NCD/LCD.

Prior Authorization

Prior authorization for unlisted codes

How Tests Must Be Ordered

Step Therapy

Order tests only by treating providers with documented intended use of results

Must be ordered by the treating physician or other healthcare provider who is treating the beneficiary, with documentation that the provider will use the results to manage the member's specific medical problem.

Ordering provider must be treating the member for a specific medical problem, condition, or injury.
Document how test results will be promptly used to directly manage that condition.

Note

Ensure qualified ordering personnel and documented clinical indication

Ordered by qualified personnel with documentation of clinical indication; all providers must follow Medicare medical necessity requirements, including appropriateness in duration, frequency, setting, and that the service meets but does not exceed medical need.

Ensure clinical indication is documented in the medical record.
Adhere to Medicare standards for appropriateness and qualified personnel.

Frequency and Duration

Frequency limits — general

Frequency must be reasonableMust be performed at a frequency that does not exceed medically reasonable and necessary expectations.

NCD/LCD frequency rulesFor tests with applicable NCD/LCD, frequency expectations noted in those documents apply and exceeding them may render services not medically necessary.

Audit and utilization reviewFrequency and utilization may be audited or subject to post-payment data analysis.

Frequency limits — all laboratory tests

Determination by medical necessityAll laboratory tests' frequency is determined by appropriateness in duration and frequency per medical necessity.

Provider responsibilityProviders must ensure ordered tests follow Medicare medical necessity frequency expectations.

Services Not Covered

Direct‑to‑consumer and over‑the‑counter tests, and other tests performed without clinical signs, symptoms, complaints, or personal history (screening), are generally not covered because they do not meet Medicare's reasonable and necessary standard. Additionally, tests lacking analytic validity or clinical utility, or those identified as investigational/experimental, are excluded from coverage.

Screening tests performed in the absence of signs or symptoms are not covered unless specifically authorized as a Medicare preventive service. Certain tests may also be excluded by CMS programs such as MolDX or other CMS exclusions; providers should consult those program manuals and CMS guidance when determining coverage applicability.

Key Definitions

Screening — definition and coverage

DefinitionScreening: testing performed in the absence of signs, symptoms, complaints, or personal history of disease or injury.

Coverage stanceScreening services are generally not medically necessary and not eligible for coverage unless explicitly authorized as a Medicare preventive service.

Medicare preventive listLaboratory tests covered for screening are listed as preventive services per 42 CFR 411.15(a)(1) and the CMS Preventive Services tool.

Diagnostic — definition and expectations

DefinitionDiagnostic: testing performed to rule out or confirm a suspected diagnosis because of a sign and/or symptom.

Clinical justificationThe sign or symptom should be used to explain the reason for the test and must be documented.

Background and Scope

Medicare distinguishes screening from diagnostic testing: screening is testing without signs, symptoms, complaints, or personal history and is generally not covered unless a statute permits; diagnostic testing is performed to confirm or rule out a suspected diagnosis because of documented sign(s) or symptom(s). Coverage requires that diagnostic tests be ordered by the treating provider and that results will be used directly to manage the beneficiary's specific medical problem.

Policy Summary

PayerProvidence Health Plan

PolicyLaboratory Testing Services

Policy CodePolicy 456

Change TypeNo material clinical or coverage changes

Effective DateJun 1, 2026

Last ReviewJun 1, 2026

Next Review DateMar 1, 2027

SourceLink

On This Page

Documentation should explain how results will change clinical management or treatment decisions.

Diagnostic testing to rule out or confirm suspected disease when signs or symptoms are present

Covered when ALL of the following are met:

Documented clinical indication: Test is ordered to rule out or confirm a suspected disease because the patient has documented sign(s) and/or symptom(s)

Provider must document the sign, symptom, complaint, or relevant history that justifies the test; screening in absence of signs/symptoms is generally not covered.

Meets Medicare reasonable and necessary standards: The service is reasonable and necessary under Title XVIII §1862(a)(1)(A): appropriate for diagnosis or treatment and expected to improve management of the condition

Services must fit Medicare benefit categories and not be excluded by statute, regulation, NCD, or LCD.

Provider and laboratory requirements: Ordered by a treating provider and performed by qualified personnel in a laboratory with appropriate CLIA certification

Tests ordered by non-treating providers (including DTC/OTC) or performed without required CLIA certification are subject to denial.

When submitting an unlisted code for a test that could be addressed by this policy, prior authorization is recommended to avoid post-service denial; all unlisted codes are reviewed for medical necessity, correct coding, and pricing at the claim level and unlisted codes for non-covered services will be denied.

Unlisted codes are reviewed at claim level for medical necessity, correct coding, and pricing.
If an unlisted code is submitted for potentially covered services under this policy, obtain prior authorization to avoid post-service denial.
Unlisted codes submitted for non-covered services addressed in this policy will be denied as not covered.

Note

Provider responsibilities for prior authorization and medical necessity

Providers must follow the medical necessity and prior authorization expectations outlined in this policy when ordering laboratory tests; ensure required documentation is available at time of review.

Order tests only when criteria for medically reasonable and necessary testing are met.
Provide required documentation (see Documentation callout) to support medical necessity and prior authorization requests.

Step Therapy

Step therapy / other requirements

None specified.

Documentation Required

Required documentation: test and laboratory identifiers

When requesting review for medical necessity or prior authorization, provide the following: test name; name and location of the laboratory performing (or to perform) the test; and clinical notes documenting the condition or suspected condition.

Test name
Name and location of performing laboratory
Clinical notes documenting condition or suspected condition

Documentation Required

Clinical documentation requirements for diagnostic testing

Document the sign, symptom, complaint, or personal history that justifies diagnostic testing and ensure services meet Medicare 'reasonable and necessary' standards; utilization may be audited or subject to post-payment analysis.

Record the clinical reason (signs/symptoms/history) that justifies the test.
Ensure test frequency, duration, setting, and personnel meet Medicare medical necessity considerations.

Denial Risk

Failure to provide required documentation may trigger denial

Failure to provide required documentation—such as test name, performing laboratory and location, clinical notes including condition/suspected condition, explanation of what information the results will provide and how results will impact management, relevant signs/symptoms/prior test results, and family history when applicable—may result in claim denial or review delays.

Include how test results will be used to manage the member's condition and evidence that the ordering provider is the treating provider.
Omission of required items can lead to denial or delayed review.

Denial Risk

Ensure CLIA certification and treating-provider ordering

Do not order or submit claims for tests performed by a laboratory without the appropriate CLIA certificate, and ensure tests are ordered by the treating provider (not direct-to-consumer or OTC); tests lacking appropriate CLIA certification or not ordered by the treating provider are trigger conditions for denial.

Verify the performing laboratory has the appropriate CLIA certificate for the testing performed.
Ensure the test is ordered by the treating physician or qualified practitioner (not DTC/OTC).

Denial Risk

Denial triggers: screening tests and unlisted codes

Tests performed without signs, symptoms, complaints, or personal history (screening) are not covered by Medicare and will be denied; unlisted codes submitted for non-covered services addressed in this policy will be denied as not covered.

Screening tests (no clinical indication) are generally not covered unless explicitly authorized as a Medicare preventive service.
Unlisted codes for non-covered services under this policy will be denied.

Evidence when no NCD/LCDIn absence of fully established NCD/LCD, evidence-based criteria may be used to determine appropriate frequency.

Contrast with screeningDiagnostic testing differs from screening because it is performed in response to signs/symptoms and supports management decisions.

Screening — concise definition

Short definitionScreening: testing performed in the absence of signs, symptoms, complaints, personal history of disease, or injury.

Coverage implicationGenerally not covered unless explicitly authorized by Medicare as a preventive service.

Documentation noteWhen screening is authorized as preventive, follow the specific preventive service coverage rules.

Diagnostic — concise definition

Short definitionDiagnostic testing: testing performed to rule out or confirm a suspected diagnosis because of a sign and/or symptom.

Reason for testThe sign or symptom should explain the reason for the test and must be documented to support medical necessity.

Use in coverage determinationsDiagnostic tests are evaluated for analytic validity, clinical utility, and whether results will be used to manage a specific medical problem.