Summary & Overview
HCPCS G9436: Aspirin Not Prescribed for Documented Reasons
HCPCS Level II code G9436 denotes that aspirin was not prescribed for clinically documented reasons such as allergy, medical intolerance, or a history of bleeding. This code captures a specific medication-decision outcome important for secondary prevention workflows, quality measurement, and accurate clinical documentation. Nationally, clear use of G9436 supports consistent reporting of aspirin contraindications and can affect quality measure denominators and claims-based care assessments. Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of what G9436 represents, its clinical context in ambulatory and specialty outpatient settings, and how it fits into documentation and quality reporting. The publication outlines typical use cases, common scenarios warranting use of the code, and where to expect its appearance in claims and chart records. It also summarizes available benchmarks and policy considerations where present and clarifies where input data is not available. The content is intended for clinicians, billing staff, compliance officers, and policy analysts seeking a national-level reference on this specific HCPCS Level II code for aspirin non-prescription due to documented reasons.
Billing Code Overview
HCPCS Level II code G9436 documents situations where aspirin is intentionally not prescribed for documented clinical reasons, such as documented allergy, medical intolerance, or a history of bleeding. The code is used to record that aspirin therapy was considered but not given because of a specified contraindication.
Service type: Medication decision / secondary prevention documentation
Typical site of service: Outpatient clinic, primary care office, cardiology clinic, or other ambulatory settings where preventive medication decisions and documentation occur
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A patient with established atherosclerotic cardiovascular disease or high cardiovascular risk is evaluated in primary care or cardiology clinic for secondary prevention. The clinician reviews current medications and determines that aspirin therapy is not prescribed due to a documented contraindication such as a true allergy to aspirin (e.g., urticaria, angioedema), a history of major gastrointestinal bleeding, or medical intolerance (severe aspirin-induced asthma). The workflow includes history and medication reconciliation, review of prior bleeding events and allergies, documentation of the clinical rationale in the medical record, and consideration of alternative antiplatelet strategies. The visit may occur in an outpatient clinic, hospital outpatient department, or cardiology practice, and documentation supports reporting of billing code G9436 to indicate that aspirin was not prescribed for documented reasons (e.g., allergy, medical intolerance, history of bleed).
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
25 | Significant, separately identifiable evaluation and management service by the same physician on the same day of the procedure or other service | Use when an E/M visit is performed and documented as distinct from the encounter in which G9436 is reported |
59 | Distinct procedural service | Use if another procedure or distinct service on the same day must be indicated as separate from the service associated with G9436 |
76 | Repeat procedure or service by same physician | Use if the same service is repeated by the same provider on the same day and needs distinction |
77 | Repeat procedure by another physician | Use when another physician repeats the service on the same day |
GT | Via interactive audio and video telecommunication (telehealth) | Use if the clinical encounter documenting the reason aspirin is not prescribed is delivered via synchronous telehealth |
95 | Synchronous telemedicine service rendered via a real-time interactive audio and video telecommunications system | Use when telemedicine visit documents the contraindication to aspirin |
GA | Waiver of liability statement on file (ABN) | Use when an Advance Beneficiary Notice is on file for Medicare when applicable treatments are refused or not provided |
XE | Separate encounter, a service that is distinct because it occurred during a separate encounter | Use to indicate the service is distinct due to a separate encounter date |
XS | Separate structure — service performed on a separate organ/structure | Use in rare cases to indicate distinct anatomical site when needed for claims adjudication |
PQ | Performance qualifier (noted for reporting performance measures) | Use in reporting contexts when quality reporting requires designation of performance-related qualifiers |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
207Q00000X | Cardiology | Cardiology clinicians commonly document antiplatelet therapy decisions for secondary prevention |
207L00000X | Internal Medicine | Primary care physicians manage long-term cardiovascular prevention and document aspirin contraindications |
207R00000X | Family Medicine | Family physicians provide preventive care and document reasons for not prescribing aspirin |
2084P0800X | Physician Assistant | PAs in primary care or cardiology practices frequently participate in medication reconciliation and documentation |
363A00000X | Nurse Practitioner | NPs in outpatient settings often evaluate cardiovascular risk and document contraindications to aspirin |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
I25.10 | Atherosclerotic heart disease of native coronary artery without angina pectoris | Common indication for consideration of aspirin for secondary prevention; documentation may explain why aspirin is withheld |
I63.9 | Cerebral infarction, unspecified | Stroke history is a common reason to consider antiplatelet therapy; contraindications to aspirin must be documented if not used |
I21.9 | Acute myocardial infarction, unspecified | Post-MI patients are typical candidates for aspirin; documentation required if aspirin is not prescribed |
K92.2 | Gastrointestinal hemorrhage, unspecified | History of GI bleed is a frequent documented reason to withhold aspirin |
T88.1XXA | Allergy status to other drugs, medicaments and biological substances, initial encounter | Represents documented drug allergy history; relevant when aspirin allergy is cited as a reason not prescribed |
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 length where clinician documents the reason aspirin is not prescribed and addresses cardiovascular prevention |
99214 | Office or other outpatient visit for the evaluation and management of an established patient, typically 25 minutes | Used when a more complex visit is required to assess bleeding risk, review history, and document contraindications to aspirin |
93000 | Electrocardiogram, routine ECG with at least 12 leads; with interpretation and report | May be performed as part of cardiovascular evaluation when assessing overall management alongside antiplatelet decisions |
99406 | Smoking and tobacco-use cessation counseling, intermediate, greater than 3 minutes up to 10 minutes | Often provided in preventive cardiology visits in conjunction with medication decisions |
37220 | Revascularization, endovascular, open or percutaneous, not otherwise specified (example peripheral) | Interventional procedures where antiplatelet management is relevant; documentation of aspirin contraindication may affect peri-procedural planning |