G9791 Tobacco-Free Status (HCPCS) Reimbursement

HCPCS Level II code G9791 indicates that a patient’s most recent tobacco status is documented as tobacco free. This preventive health-status reporting code is used in ambulatory and primary care settings to record current tobacco use status and supports quality measurement and population health efforts. Nationally, standardized documentation of tobacco-free status contributes to public health monitoring and pay-for-performance programs that track preventive care metrics.

Key payers included in this overview are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an explanation of what the code represents, the clinical context for its use, and how it aligns with preventive care workflows. The publication outlines common billing considerations, typical sites of service, and the ways payers may incorporate tobacco-status reporting into quality programs and claims adjudication.

This summary provides benchmarks and policy-relevant context where available and notes when input data is not provided. It is intended to help coding staff, revenue cycle professionals, and clinical managers understand the purpose of HCPCS Level II code G9791, its role in documenting tobacco-free status, and the broader implications for reporting and compliance at the national level.

Billing Code Overview

HCPCS Level II code G9791 denotes most recent tobacco status is tobacco free. The service type is tobacco use status documentation / preventive health-status reporting, capturing that the patient's most recent documented tobacco use status is tobacco-free. The typical site of service is ambulatory outpatient or primary care settings, where clinicians record tobacco use status during routine visits or preventive care encounters.

Data not available in the input.

Clinical Context

A patient attends a primary care visit for routine health maintenance. The patient is an adult who previously used tobacco products but reports cessation at a follow-up visit. The clinician documents that the patient’s most recent tobacco status is tobacco free and updates the medical record. The workflow includes: verification of tobacco use status during intake, counseling or brief cessation follow-up as clinically indicated, documentation in the electronic health record (EHR) problem list and social history, and billing the tobacco status measure using G9791 when applicable for quality reporting or population health tracking. Typical sites of service are outpatient primary care clinics, community health centers, and preventive care visits in ambulatory settings.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	Use when substantially greater work is performed documenting or counseling beyond typical visit content related to tobacco cessation status recording.
`23`	Unusual anesthesia	Rarely applicable; not ordinarily used with this code but listed among common modifiers.

Taxonomy Code	Specialty	Notes
`207Q00000X`	Family Medicine	Primary care clinicians commonly document tobacco-free status during preventive visits.
`207R00000X`	Internal Medicine	Hospital-based and outpatient internists record tobacco status for chronic disease management and prevention.
`208D00000X`	Pediatrics	Pediatricians document tobacco exposure and caregiver tobacco use; adolescent cessation status when applicable.
`163W00000X`	Public Health	Public health nurses and community clinicians capture tobacco status for population health programs.
`3336C0002X`	Tobacco Treatment Specialist	Specialists who provide focused tobacco treatment and counseling who may document tobacco-free status.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`Z72.0`	Tobacco use	Relevant for identifying current tobacco users and documenting cessation history.
`Z87.891`	Personal history of nicotine dependence	Used when documenting a past history of nicotine dependence in a patient now tobacco free.
`F17.200`	Nicotine dependence, unspecified, uncomplicated	Applicable when dependence is noted in the problem list even if patient reports current tobacco-free status; may justify counseling.
`F17.210`	Nicotine dependence, cigarettes, uncomplicated	Specific to patients with prior cigarette dependence who are now tobacco free.
`Z65.8`	Other specified problems related to psychosocial circumstances	Captures psychosocial factors that may affect tobacco cessation maintenance and follow-up.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`99213`	Office or other outpatient visit for the evaluation and management of an established patient, typically 15 minutes	Common E/M visit during which tobacco status is verified and documented; often billed for the encounter documenting `G9791`.
`99406`	Smoking and tobacco use cessation counseling visit, intermediate, greater than 3 minutes up to 10 minutes	Used when brief counseling is provided at the same visit that documents tobacco-free status.
`99407`	Smoking and tobacco use cessation counseling visit, intensive, greater than 10 minutes	Used when extended cessation counseling accompanies documentation of tobacco-free status.
`99395`	Periodic comprehensive preventive medicine reevaluation and management of an individual, established patient; age-specific	Preventive visit where tobacco-free status is routinely recorded as part of the health maintenance assessment.
`G0438`	Annual wellness visit, personalized prevention plan of service (PPPS), first visit	Initial Medicare annual wellness visit where tobacco use status is documented as part of the preventive plan.

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Summary & Overview

HCPCS G9791: Most Recent Tobacco Status Is Tobacco Free