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    v1.0.30
    OpenPayerPolicy UpdatesLaboratory/PathologyMolina Outpatient Drug Testing Coverage | OpenPaye…
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    CurrentMolina HealthcarePolicy 33

    Policy Regarding Outpatient Definitive Drug Testing

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    This policy governs the medical necessity, documentation, coding, and authorization requirements for outpatient definitive drug testing for Molina Healthcare of Illinois members. Broader definitive testing may be covered in inpatient, emergency room, and observation settings when supported by documentation.

    Policy Summary
    PayerMolina Healthcare
    PolicyPolicy Regarding Outpatient Definitive Drug Testing
    Policy CodePolicy N/A
    Change TypeNo material change
    Effective DateJanuary 1, 2027
    Next Review DateNot specified
    Key ActionSubmit authorization requests through Availity Essentials with the required clinical supporting documents.
    SourceLink
    POLICY UPDATE CHANGES

    No material clinical or coverage changes in this revision.

    14Maximum outpatient drug classes
    1-7G0480 drug classes
    8-14

    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.

    G0481 drug classes
    9ASAM substance classes
    5Required documentation elements
    AvailityAuthorization portal

    Coverage Criteria

    Medical Necessity for Definitive Testing

    Definitive drug testing is medically necessary when it is individualized to substances specific to the member’s treatment plan, accurate and reliable results are necessary to integrate treatment decisions and clinical assessment, and all required documentation and clinical-use criteria are met.

    ALL of the following

    • Testing is individualized to test only for substances specific to the member’s plan of treatment.
    • Clinical documentation specifies how the test results will be used to guide clinical decision-making.
    • The medical record includes the member’s history, physical examination, and previous laboratory findings.
    • The medical record includes a signed and dated order, or an intent to order documented in the medical record.
    • The current treatment plan is documented.
    • The prescribed medication(s) are documented.
    • A risk assessment is documented.
    • Accurate and reliable results are necessary to integrate treatment decisions and clinical assessment.
    • The frequency and rationale for definitive urine drug testing are documented in the member’s medical record.

      Frequency depends on the member’s specific substance use history. Providers may reference 019 Definitive Drug Testing Yearly/Same-Day Limit and 031 Presumptive Drug Testing Yearly Limits for further frequency guidance.

    Outpatient Definitive Testing Criteria

    Outpatient definitive testing is covered when the requested testing is limited to the specific drugs or drug classes warranted by the member’s medical record and unpredicted initial-testing results.

    ALL of the following

    • The request includes only the specific drug(s) or number of drug classes for which initial testing resulted in unpredicted results.
    • The target drug or drug classes are pertinent to the member’s care based on the medical record.
    • The target drug classes are documented on the test order and in the medical record.
    • When definitive testing for substances of abuse is required based on the member-specific history, the applicable test is selected according to the number of pertinent drug classes: HCPCS G0480 for 1–7 drug classes or HCPCS G0481 for 8–14 drug classes.
    • Testing is limited to clinically relevant substances. The ASAM substance-of-abuse classes include amphetamines, opiates, phencyclidine, barbiturates, benzodiazepines, marijuana, cocaine, methadone, and propoxyphene.

    Inpatient, Emergency Room, and Observation Criteria

    Inpatient, emergency room, and observation settings may support broader definitive testing when the medical record documents medical necessity.

    ALL of the following

    • The member is receiving testing in an inpatient, emergency room, or observation setting.
    • Documentation supports the medical necessity of the requested definitive testing, including the member-specific clinical circumstances and how results will guide treatment or clinical decision-making.
    • The requested drug(s) or drug classes are relevant to the member’s history, treatment plan, risk assessment, or clinical presentation.
    • For testing of 15–21 drug classes, HCPCS G0482 may be used when documentation supports medical necessity.
    • For testing of 22 or more drug classes, HCPCS G0483 may be used when documentation supports medical necessity.

    Outpatient definitive testing involving more than 14 drugs or drug classes is excluded from coverage under this policy. Definitive tests G0482 (15–21 drug classes) and G0483 (22 or more drug classes) are not indicated for outpatient testing.

    For outpatient definitive testing, the request may include only the specific drug(s) or number of drug classes for which initial testing produced unpredicted results. Drug classes unrelated to those unpredicted initial-testing results are not covered.

    Outpatient definitive testing of more than 14 drugs or drug classes is not medically necessary.

    Coding and Drug-Class Ranges

    Outpatient definitive testing within 14 drug classesHCPCSCovered
    G0480Definitive drug testing for 1-7 drug classes
    G0481Definitive drug testing for 8-14 drug classes
    Outpatient definitive testing over 14 drug classesHCPCSNot Covered
    G0482Outpatient definitive drug testing for 15-21 drug classes
    G0483Outpatient definitive drug testing for 22 or more drug classes
    Inpatient, emergency room, and observation definitive testingHCPCSCovered
    G0482Definitive drug testing for 15-21 drug classes when documentation supports medical necessity in inpatient, emergency room, and observation settings
    G0483Definitive drug testing for 22 or more drug classes when documentation supports medical necessity in inpatient, emergency room, and observation settings
    G0480 drug-class range
    HCPCS codeG0480
    Drug-class range1-7 drug classes
    UseDefinitive testing for substance classes pertinent to the member's care based on the medical record
    G0481 drug-class range
    HCPCS codeG0481
    Drug-class range8-14 drug classes
    Documentation

    Provider Documentation and Authorization Actions

    Prior Authorization

    Digital-Only Authorization Submission

    Submit authorization requests digitally through Availity Essentials, Molina Healthcare’s exclusive provider portal. Exceptions are Pharmacy requests and delegated utilization-management vendors; clinical supporting documents must accompany every authorization request.

    • Exclusive portal: Availity Essentials
    • Exceptions: Pharmacy requests and delegated UM vendors
    Documentation Required

    Required Medical Necessity Record

    Document the medical necessity of definitive drug testing in the member’s record and connect the documentation to the services submitted on the claim. At minimum, include the member’s history, physical examination, previous laboratory findings, signed and dated order or intent-to-order documentation, current treatment plan, prescribed medications, and risk assessment.

    • Member history, physical examination, and previous laboratory findings

    Background

    Definitive drug testing uses a method with high sensitivity and high specificity to identify specific drugs, their metabolites, and/or drug quantities. Testing should be individualized to substances relevant to the member’s treatment plan, with results sufficiently accurate and reliable to support treatment decisions and clinical assessment.

    Definitions

    Definitive testing
    MethodTesting performed using a method with high sensitivity and specificity
    Identification capabilityCan identify specific drugs, their metabolites, and/or drug quantities
    Testing typeDefinitive testing provides specific analytical identification rather than preliminary evidence
    Presumptive testing
    MethodTesting performed using a method with lower sensitivity and/or specificity
    PurposeEstablishes preliminary evidence regarding the absence or presence of drugs or metabolites in a sample
    Testing type

    Covered Indications

    Individualized Definitive Drug Testing

    Individualized definitive drug testing is covered when all of the following criteria are met:

    Individualized clinical use

    • Accurate and reliable results are necessary to integrate treatment decisions and clinical assessment.

    • Substances tested are limited to

      • Substances specific to the member's treatment plan.
      • The specific drug(s) or number of drug classes associated with unpredicted results from initial testing.
    • The medical necessity, testing rationale, frequency, and intended clinical use are documented in the member's medical record.

    Frequency Limits

    Definitive urine drug testing
    Frequency basisFrequency depends on the member's specific substance use history
    Required documentationThe frequency and rationale for definitive urine drug testing must be documented
    Fixed limitNo fixed frequency is stated; frequency is member-specific

    Ordering Requirements

    Documentation Required

    Meet ordering and referring requirements

    The ordering or referring clinician must justify the laboratory services and provide detailed clinical documentation. The provider is responsible for ensuring that submitted laboratory tests are properly justified, including a signed and dated order or documented intent to order in the medical record.

    Not Covered Services

    The following outpatient definitive testing is not covered: testing involving more than 14 drugs or drug classes, and testing for drugs or drug classes not associated with unpredicted results from initial testing.

    Policy Summary
    PayerMolina Healthcare
    PolicyPolicy Regarding Outpatient Definitive Drug Testing
    Policy CodePolicy N/A
    Change TypeNo material change
    Effective DateJanuary 1, 2027
    Next Review DateNot specified
    Key ActionSubmit authorization requests through Availity Essentials with the required clinical supporting documents.
    SourceLink
    On This Page
    Coverage CriteriaCoding and Drug-Class RangesProvider Documentation and Authorization ActionsBackgroundDefinitionsCovered IndicationsFrequency LimitsOrdering RequirementsNot Covered Services
    The pertinent target drug classes must be documented on the test order and in the medical record
    G0482 drug-class range
    HCPCS codeG0482
    Drug-class range15-21 drug classes
    Permitted settingMay be used when medical necessity is documented in inpatient, emergency room, and observation settings
    G0483 drug-class range
    HCPCS codeG0483
    Drug-class range22 or more drug classes
    Permitted settingMay be used when medical necessity is documented in inpatient, emergency room, and observation settings
    Outpatient maximum
    Outpatient maximum14 drugs or drug classes
    Not medically necessaryOutpatient definitive testing involving more than 14 drugs or drug classes is not medically necessary
    Outpatient code implicationG0482 and G0483 are not indicated for testing in the outpatient setting
  1. Signed and dated order or intent-to-order noted in the medical record
  2. Current treatment plan and prescribed medication(s)
  3. Risk assessment
    4. Documentation Required

    Document Testing Rationale and Frequency

    Individualize definitive testing to the member’s substance use history and treatment plan. Document the rationale and frequency in the medical record, including how accurate and reliable results will be used to guide clinical decision-making and assessment.

    • Test only substances specific to the member’s plan of treatment
    • Document the member-specific rationale and frequency
    • Explain how results will integrate treatment decisions and clinical assessment
    Documentation Required

    Identify Pertinent Target Drug Classes

    When ordering G0480 or G0481 for substances of abuse, identify the pertinent target drug classes based on the member’s history and medical record. Document those target classes both on the test order and in the medical record.

    • G0480: 1–7 drug classes
    • G0481: 8–14 drug classes
    • Relevant classes may include amphetamines, opiates, phencyclidine, barbiturates, benzodiazepines, marijuana, cocaine, methadone, and propoxyphene
    Documentation Required

    Support the Claim with Clinical Documentation

    Ensure the ordering or referring clinician’s detailed clinical documentation supports and justifies every service submitted on the claim. The record should connect the clinical need to medical necessity and explain the definitive test results or services provided.

    • Justify all laboratory tests submitted for reimbursement
    • Connect clinical findings and treatment needs to the billed services
    • Explain the definitive test results or services
    Denial Risk

    More Than 14 Drugs or Drug Classes

    Outpatient definitive testing of more than 14 drugs or drug classes is not medically necessary. G0482 (15–21 drug classes) and G0483 (22 or more drug classes) are not indicated in outpatient settings, although they may be used when documentation supports medical necessity in inpatient, emergency-room, or observation settings.

    • Outpatient G0482: 15–21 drug classes
    • Outpatient G0483: 22 or more drug classes
    • Claims may be denied when outpatient testing exceeds 14 drugs or drug classes
    Denial Risk

    Limit Testing to Unpredicted Results

    Limit definitive testing to the specific drug or drugs, or number of drug classes, for which initial testing produced unpredicted results. Do not request broader definitive testing than the unpredicted initial-testing results support.

    • Include only specific drugs or drug classes associated with unpredicted initial results
    • Base the requested scope on the member-specific history and the initial test findings
    • Broader testing is not indicated when it exceeds the supported unpredicted results
    Denial Risk

    Insufficient Clinical Justification

    Claims may be denied when the ordering or referring clinician’s documentation does not justify the services submitted. Before billing, verify that the record contains sufficient clinical rationale and medical necessity support for the requested testing.

    • Confirm ordering/referring clinician documentation supports each submitted service
    • Ensure the medical record supports the requested test scope, frequency, and clinical use
    Presumptive testing provides preliminary evidence rather than definitive identification
    ASAM substance-of-abuse classes
    Classes 1-3Amphetamines; opiates; phencyclidine
    Classes 4-6Barbiturates; benzodiazepines; marijuana
    Classes 7-9Cocaine; methadone; propoxyphene

    Frequency depends on the member's specific substance use history.

    Definitive Testing for Pertinent Substance Classes

    Definitive testing for substance classes is covered when all of the following apply:

    Pertinent substance classes

    • The substance classes are pertinent to the member's care based on the member-specific history and medical record.

    • Applicable code and class range

      • HCPCS G0480 is used for definitive testing of 1-7 drug classes.1-7 drug classes
      • HCPCS G0481 is used for definitive testing of 8-14 drug classes.8-14 drug classes

    Definitive Testing Involving 15 or More Drug Classes

    Definitive testing involving 15 or more drug classes is covered when all of the following criteria are met:

    Expanded testing in non-outpatient settings

    • The testing is medically necessary and the documentation supports that medical necessity.
    • The testing is performed in an inpatient, emergency room, or observation setting.

    • Applicable code

      • HCPCS G0482 is used for definitive testing of 15-21 drug classes.15-21 drug classes
      • HCPCS G0483 is used for definitive testing of 22 or more drug classes.22 or more drug classes