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    v1.0.28
    OpenPayerBilling CodesProcedures / Professional ServicesHCPCS hcpcs-g2088-office-based-opioid-use-disorder-therapy-addl-30-min
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    HCPCS G2088: Office-Based Treatment for Opioid Use Disorder, Add-on 30 Minutes

    Medicare pays $63 on average nationally for this procedure.

    HCPCS Level II code G2088 represents an add-on service for office-based treatment of opioid use disorder that covers each additional 30 minutes of care beyond the initial 120 minutes, including care coordination, individual therapy, and group therapy/counseling; service type is add-on extended behavioral health treatment, and the typical site of service is an office-based outpatient behavioral health or addiction treatment setting.

    For related coverage guidance, see recent payer policy updates: Esophagogastroduodenoscopy (EGD) Coverage Policy, Magnetic Sphincter Augmentation for the Treatment of Gastroesophageal Reflux Disease (GERD), Serum Testing for Hepatic Fibrosis in the Evaluation and Monitoring of Chronic Liver Disease.

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    Table of contents

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    Clinical & Coding Specifications

    Clinical Context

    A 34-year-old patient with opioid use disorder presents to an office-based addiction treatment clinic for an established weekly care visit. The multidisciplinary team includes a board-certified addiction medicine physician, a licensed clinical social worker, and a certified recovery coach. The patient receives medication management for buprenorphine, an initial 60-minute individual therapy session focused on relapse prevention, and joins a 60-minute group therapy session. Total direct clinical contact for the encounter is 180 minutes. The clinic bills the primary office-based OUD treatment code for the first 120 minutes and uses G2088 to report the additional 60 minutes (two units of G2088, each representing an additional 30 minutes) for care coordination, individual and group counseling, and documentation.

    Workflow steps:

    • The patient checks in and completes intake questionnaires and urine drug screen.

    • The clinician performs medication management and documents the medical decision-making and monitoring plan.

    • The patient attends individual therapy with the social worker and later participates in group counseling led by the therapist; time spent in these counseling activities is tracked cumulatively.

    • Care coordination activities (telephone outreach, coordination with behavioral health specialists, and referral documentation) are performed and time-stamped in the medical record.

    • Billing staff applies the primary office-based OUD treatment code for the initial 120 minutes and appends G2088 for each additional 30-minute increment beyond the first 120 minutes, ensuring units match documented additional time and that supporting clinical notes justify counseling and coordination services.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    99213Office or other outpatient visit for the evaluation and management of an established patient, typically 15 minutesMay be billed for a separate E/M visit when an E/M is provided in addition to the bundled office-based OUD treatment; documentation must support a distinct visit.
    90834Psychotherapy, 45 minutes with patient and/or family memberCommonly performed as part of individual therapy sessions that contribute to time billed with G2088 increments.
    90853Group psychotherapy (other than of a multiple-family group)Represents group counseling sessions that contribute to the cumulative treatment time; may be documented alongside G2088 time increments.
    81002

    Related Modifiers

    8 rows

    ModifierDescriptionWhen to Use
    25CPT modifier 25 indicates that on the same day as another procedure or service, the same physician or other qualified health care professional provided a significant, separately identifiable…- When to apply: Use modifier 25 only on an E/M code to indicate the same provider delivered a significant, separately identifiable E/M service on the same day as another procedure or service — i.e.,…
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    76Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…
    95Modifier 95 indicates that a service was provided via synchronous, real‑time audio‑video telehealth rather than in‑person. Per CMS, AAPC and professional associations, append modifier 95 to claim…- Use modifier 95 to indicate a service was furnished via synchronous, real‑time audiovisual telehealth (a live audio‑video conference between patient and provider) rather than in‑person. - Pair…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
    22Modifier –22 (Increased Procedural Services) is used when a reported procedure is substantially more extensive than normally required. The CPT Manual and CMS state it may be appended only when the…- When to use: Append modifier -22 to a procedural CPT code when the service performed is substantially more extensive than the usual service described by that code — i.e., the procedure required…
    24Modifier 24 denotes an unrelated evaluation and management (E/M) service performed by the same physician or qualified healthcare professional during a postoperative global period. Per CPT guidance,…- Use modifier 24 when you report an evaluation and management (E/M) service performed by the same physician or same-specialty group during a procedure’s postoperative global period that is unrelated…

    Related Provider Taxonomies

    8 rows

    Taxonomy CodeSpecialtyNotes
    2084P0800XPsychiatry PhysicianA Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, …
    2084N0400XNeurology PhysicianA Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, auton…
    251S00000XCommunity/Behavioral Health AgencyA private or public agency usually under local government jurisdiction, responsible for assuring the delivery of community based mental health, intell…
    363L00000XNurse Practitioner(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision mak…
    103TH0004XHealth PsychologistA psychologist who specializes in clinical health psychology that investigates and implements clinical services across diverse populations and setting…
    224Z00000XOccupational Therapy AssistantAn occupational therapy assistant is a person who has graduated from an occupational therapy assistant program accredited by the Accreditation Council…
    207QS0010XSports Medicine (Family Medicine) PhysicianA family medicine physician that is trained to be responsible for continuous care in the field of sports medicine, not only for the enhancement of hea…
    207RA0201XAllergy & Immunology (Internal Medicine) PhysicianAn internist doctor of osteopathy that specializes in the treatment of allergy and immunologic disorders. A doctor of osteopathy that is board eligib…

    Related Payer Policy Updates

    Specialty: Gastroenterology1 / 3

    10 rows

    PolicyPayerEffective Date
    Esophagogastroduodenoscopy (EGD) Coverage Policyevicore2026-11-05
    Magnetic Sphincter Augmentation for the Treatment of Gastroesophageal Reflux Disease (GERD)univerahealthcare2026-10-15
    Serum Testing for Hepatic Fibrosis in the Evaluation and Monitoring of Chronic Liver DiseaseOscar Health2026-10-01
    Fecal Analysis in the Diagnosis of Intestinal Dysbiosis and Fecal Microbiota Transplant TestingOscar Health2026-10-01
    Pancreatic Enzyme Testing for Acute PancreatitisOscar Health2026-10-01
    Helicobacter pylori TestingOscar Health2026-10-01
    Celiac Disease TestingOscar Health2026-10-01
    Laboratory Testing for the Diagnosis of Inflammatory Bowel DiseaseOscar Health2026-10-01
    Percutaneous Electrical Nerve Field Stimulation (PENFS)Cigna2026-09-15
    Colorectal Cancer ScreeningBlue Cross Blue Shield - New Mexico2026-09-04

    Related Codes

    HCPCS-G9490-HOME-ASSESSMENT-NON-HOMEBOUND

    HCPCS G9490: Home Visit Patient Assessment for Non-Homebound Beneficiary

    HCPCS-G0008-INFLUENZA-VACCINE-ADMINISTRATION

    HCPCS G0008: Administration of Influenza Virus Vaccine

    HCPCS-G0009-PNEUMOCOCCAL-VACCINE-ADMINISTRATION

    HCPCS G0009: Administration of Pneumococcal Vaccine

    HCPCS-G0010-HEPATITIS-B-VACCINE-ADMINISTRATION

    HCPCS G0010: Administration of Hepatitis B Vaccine

    HCPCS-G0011-PREP-COUNSELING-HIV-RISK-REDUCTION-ADHERENCE

    HCPCS G0011: Individual PrEP Counseling, HIV Risk Assessment

    HCPCS-G0012-PRE-EXPOSURE-PROPHYLAXIS-INJECTION-HIV-PREVENTION

    HCPCS G0012: Injection of PrEP Drug for HIV Prevention

    HCPCS-G0013-PREP-INDIVIDUAL-COUNSELING-HIV-RISK-REDUCTION

    HCPCS G0013: Individual PrEP Counseling by Clinical Staff

    HCPCS-G0017-PSYCHOTHERAPY-CRISIS-FIRST-60-MINUTES-NON-OFFICE

    HCPCS G0017: Psychotherapy for Crisis, First 60 Minutes

    HCPCS-G0018-PSYCHOTHERAPY-CRISIS-ADDITIONAL-30-MINUTES-NON-OFFICE

    HCPCS G0018: Psychotherapy for Crisis, Additional 30 Minutes

    HCPCS-G0019-COMMUNITY-HEALTH-INTEGRATION-SDOH-CARE-COORDINATION

    HCPCS G0019: Community Health Integration, Person-Centered Assessment

    Showing 1–10 of 1996

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    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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    Urinalysis, non-automated, without microscopy
    Frequently performed during OUD treatment visits for monitoring and clinical decision-making.
    36415Collection of venous blood by venipunctureUsed when laboratory testing (e.g., confirmatory toxicology, medication levels) is ordered as part of OUD care.
    99406Smoking and tobacco use cessation counseling, intermediate, greater than 3 minutes up to 10 minutesBehavioral counseling codes that may be performed in addition to broader OUD counseling when separately identifiable.