G9369 Antipsychotic Adherence HCPCS Reimbursement | OpenPayer

Summary & Overview

HCPCS G9369: Antipsychotic Medication Adherence, PDC ≥ 0.8

HCPCS Level II code G9369 identifies patients who filled at least two prescriptions for any antipsychotic medication and achieved a proportion of days covered (PDC) of 0.8 or greater. As a pharmacy-derived adherence measure, this code supports population-level monitoring of treatment continuity for individuals prescribed antipsychotics and contributes to performance measurement, quality reporting, and care management workflows nationally. Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an explanation of the code’s clinical and administrative meaning, typical sites of service, and the role of the measure in pharmacy claims and outpatient quality programs. The summary also outlines how the code is used for benchmarking adherence metrics, integration into value-based contracts and quality initiatives, and considerations for claims-based quality reporting. Data not available in the input for common modifiers, associated taxonomies, ICD-10 diagnoses, related codes, and service line are noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareG9369HCPCS Level IIantipsychotic adherencemedication adherenceproportion of days coveredpharmacy claimsquality measurementoutpatient care

Billing Code Overview

HCPCS Level II code G9369 indicates that an individual filled at least two prescriptions for any antipsychotic medication and had a proportion of days covered (PDC) of 0.8 or greater. This measure captures medication adherence for antipsychotic therapy during the designated measurement period.

Service type: Medication adherence measurement
Typical site of service: Pharmacy claims and outpatient medication management settings

Clinical & Coding Specifications

Clinical Context

A 34-year-old patient with schizophrenia is enrolled in a community mental health clinic and is prescribed oral antipsychotic therapy. The patient filled at least two prescriptions for any antipsychotic medication over a measurement year and achieved a proportion of days covered (PDC) of 0.8 or greater, indicating high medication adherence. The clinical workflow begins with outpatient psychiatric assessment and diagnosis, initiation or continuation of antipsychotic medication, electronic prescribing and pharmacy fill tracking, and periodic adherence review during follow-up visits. Pharmacists and behavioral health clinicians reconcile fills and assess barriers; the clinic uses pharmacy claims or prescription refill records to calculate PDC. Documentation includes medication name, dosage, refill dates, counseling provided, and any interventions addressing side effects or adherence barriers. This information supports reporting for quality measures and billing using G9369 when the patient meets the filled-prescription and PDC threshold criteria.

Coding Specifications

Modifier	Description	When to Use
`RT`	Right side	Use if a service is laterality-specific and pertains to the right side (rare for medication adherence reporting).

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Showing 1–10 of 1996

LT

Taxonomy Code	Specialty	Notes
`2084P0800X`	Psychiatry	Psychiatrists prescribe antipsychotics and manage medication adherence.
`208000000X`	Family Medicine	Primary care physicians may manage antipsychotic prescriptions and follow adherence.
`208D00000X`	Neurology	Neurologists may prescribe antipsychotics for behavioral symptoms in select disorders.
`261QM0800X`	Pharmacy	Pharmacists perform medication reconciliation, PDC calculations, and adherence counseling.
`363LP0800X`	Behavioral Health Counseling & Therapy	Behavioral health clinicians provide adherence interventions and counseling.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`F20.9`	Schizophrenia, unspecified	Antipsychotic therapy is indicated; adherence measurement via `G9369` applies.
`F25.9`	Schizoaffective disorder, unspecified	Antipsychotics are commonly prescribed; PDC adherence measurement is relevant.
`F31.9`	Bipolar disorder, unspecified	Antipsychotics are often used in mood stabilization; adherence tracking applies.
`F23.9`	Brief psychotic disorder, unspecified	Antipsychotic treatment may be prescribed; adherence measurement can be relevant.
`F29`	Unspecified psychosis not due to a substance or known physiological condition	Antipsychotic medication management and adherence monitoring are clinically relevant.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`90833`	Psychotherapy, 30 minutes with an evaluation and management service provided concurrently	Used when brief psychotherapy is provided along with an E/M visit that addresses medication adherence.
`90836`	Psychotherapy, 45 minutes with an evaluation and management service provided concurrently	Used for longer psychotherapy sessions addressing adherence and medication management.
`90846`	Family psychotherapy (without patient present), 50 minutes	Used for family-based adherence interventions when appropriate.
`99354`	Prolonged physician service in the office or other outpatient setting, first hour (face-to-face)	Used when additional face-to-face time is required for medication counseling or care coordination related to adherence.
`99406`	Smoking and tobacco use cessation counseling, intermediate, 3–10 minutes	Representative of brief counseling CPTs that may be used for adherence counseling workflows; included as a commonly billed brief counseling code.

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