Summary & Overview
HCPCS G0397: Alcohol/Substance Misuse Assessment and Intervention >30 min
HCPCS Level II code G0397 represents a structured assessment for alcohol and/or substance (excluding tobacco) misuse using validated instruments (for example, AUDIT, DAST) combined with a brief intervention lasting more than 30 minutes. This code captures time-intensive behavioral health services aimed at identifying and addressing risky substance use in ambulatory settings. Nationally, services for substance misuse screening and intervention are a priority for reducing morbidity, preventing escalation to substance use disorder, and connecting patients to treatment.
Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context, common billing considerations, and what this code represents in practice. The publication covers benchmark utilization patterns, payer coverage notes where available, and recent policy or coding guidance relevant to structured substance misuse assessment and intervention. It also outlines typical service settings and time criteria tied to code G0397, and lists common modifiers and related administrative details where provided.
Data not available in the input for associated taxonomies, ICD-10 diagnoses, related codes, and service line are noted as such and will not be speculated upon.
Billing Code Overview
HCPCS Level II code G0397 describes a structured assessment for alcohol and/or substance misuse (other than tobacco) using validated tools (for example, AUDIT or DAST) followed by a brief intervention lasting greater than 30 minutes. This service combines screening, risk stratification, and counseling to address unhealthy substance use.
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Service type: Behavioral health assessment and intervention
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Typical site of service: Outpatient behavioral health clinics, primary care offices, community health centers, and other ambulatory care settings
Clinical & Coding Specifications
Clinical Context
A 42-year-old patient presents to a primary care clinic for routine follow-up and reports increased alcohol use over the past three months with two occasions of binge drinking and difficulty cutting down. The clinician performs a structured alcohol screening tool (e.g., AUDIT) followed by a brief motivational intervention and counseling session that lasts 40 minutes. The service includes administration and scoring of the validated screening instrument, personalized feedback on risk, discussion of reduction strategies, and development of a follow-up plan. Documentation includes the screening tool name and score, time spent on assessment and intervention (total >30 minutes), patient verbal consent to counseling, clinical findings, and any referrals placed (e.g., behavioral health, specialty addiction services). Typical workflow occurs in ambulatory primary care, family medicine, internal medicine, community health centers, or outpatient behavioral health settings; services may also be delivered via synchronous telehealth when supported by payor policy. The clinician credentials commonly providing this service include physicians, nurse practitioners, physician assistants, clinical psychologists, licensed clinical social workers, and licensed professional counselors operating under their state scope of practice and payer guidelines.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Office/Outpatient E/M | When reporting the primary E/M visit provided in the office alongside the assessment and intervention, if payer requires modifier to indicate distinct E/M. |