Summary & Overview
HCPCS G9794: Documentation of Reason for Not Prescribing Daily Aspirin/Antiplatelet
HCPCS Level II code G9794 captures documentation of a clinical reason for not prescribing daily aspirin or other antiplatelet therapy during the measurement period. This code matters nationally because it preserves clinical nuance in quality measurement and performance reporting where antiplatelet therapy is expected but medically contraindicated. Accurate use of G9794 reduces inappropriate performance penalties and clarifies patient safety considerations in aggregate reporting.
Key payers in scope include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication provides a practical overview of how G9794 is used in clinical documentation, common clinical scenarios that justify its use (for example, prior gastrointestinal or intracranial bleeding, itp, gastric bypass, or active anticoagulant therapy), and the typical outpatient settings where it is recorded.
Readers will find benchmarks and reporting context where available, descriptions of common modifiers and billing considerations (Data not available in the input if missing), and the relevant clinical context that influences coding decisions. The report highlights implications for quality measurement and payer reporting without prescribing clinical actions.
Billing Code Overview
HCPCS Level II code G9794 documents the medical reason(s) for not prescribing a daily aspirin or other antiplatelet during the measurement period. Typical documented reasons include a history of gastrointestinal bleed, intra-cranial bleed, idiopathic thrombocytopenic purpura (itp), prior gastric bypass, or active anticoagulant use.
Service type: Clinical documentation of therapy exclusion or contraindication.
Typical site of service: Outpatient clinical settings, including primary care offices, cardiology clinics, and other ambulatory care locations where medication reconciliation and preventive therapy decisions are made.
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 68-year-old male patient with a history of ischemic stroke and peripheral artery disease presents for a follow-up cardiology visit after a recent hospital discharge. The clinician documents that the patient is not on daily aspirin or another antiplatelet agent because he has a recent history of a severe gastrointestinal bleed and is currently taking a therapeutic direct oral anticoagulant for atrial fibrillation. The outpatient clinical workflow includes review of hospital records and medication reconciliation, documentation of the medical reason(s) for not prescribing an antiplatelet during the measurement period, signing and placing the rationale in the chart, and notifying the patient and primary care provider of the decision. Typical sites of service include outpatient cardiology or primary care clinics and transitional care visits after hospitalization. This documentation supports quality-measure reporting and billing using G9794 to indicate a valid medical reason for not prescribing daily aspirin or another antiplatelet agent.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | When services required substantially greater effort or complexity for the visit documentation beyond typical counseling related to antiplatelet decision-making |