Summary & Overview
HCPCS G9194: Major Depression, 180-Day Antidepressant Continuation
HCPCS Level II code G9194 documents that a patient with major depression was treated with antidepressant medication continuously through the 180-day (6 month) continuation treatment phase. This code reflects adherence to a key continuity-of-care quality measure for depressive disorders and is relevant for clinicians, behavioral health programs, and payers focused on long-term treatment outcomes. Nationally, measurement of continuation-phase antidepressant treatment informs quality reporting, care coordination, and value-based payment arrangements.
Key payers covered in this summary include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find context on the clinical meaning of the code, typical service settings where the measure is relevant, and the types of benchmarks and policy considerations most often associated with continuation-phase treatment measures. Practical topics covered include quality measurement implications, where the code is applied in outpatient behavioral health and primary care settings, and how it aligns with continuity-of-care goals for major depressive disorder.
Data not available in the input for specific modifiers, associated taxonomies, ICD-10 diagnosis lists, related codes, or service-line billing details.
Billing Code Overview
HCPCS Level II code G9194 documents a patient with a diagnosis of major depression who is recorded as being treated with antidepressant medication for the entire 180-day (6 month) continuation treatment phase. This measure captures continuity of pharmacologic treatment during the specified continuation phase for major depressive disorder.
Service type: Medication management / continuation treatment monitoring
Typical site of service: Outpatient behavioral health clinics, primary care offices, and integrated mental health services
Data not available in the input for modifiers, associated taxonomies, ICD-10 diagnoses, related codes, and service line.
Clinical & Coding Specifications
Clinical Context
A 42-year-old patient diagnosed with major depressive disorder presents for routine follow-up after an initial acute treatment phase. The treating clinician documents that the patient has been prescribed and is taking an antidepressant medication continuously for the entire 180-day (6-month) continuation phase. The clinical workflow includes: intake assessment verifying diagnosis and medication adherence; medication reconciliation and side-effect review; evaluation of depressive symptoms using standardized scales (for example, PHQ-9); documentation that antidepressant therapy was continued without interruption for 180 days; and counseling on ongoing treatment and monitoring. Typical clinicians involved include primary care physicians, psychiatrists, psychiatric nurse practitioners, and behavioral health specialists. Typical sites of service are outpatient clinic visits, behavioral health clinics, or integrated primary care settings where medication management and follow-up are provided.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
25 | Significant, separately identifiable evaluation and management service by the same physician on the same day of a procedure | Use when a clinician provides an E/M visit distinct from medication management or other procedures during the same encounter |
59 |