Summary & Overview
HCPCS G9449: History of Blood Transfusion Prior to 1992
HCPCS Level II code G9449 indicates a documented history of receiving blood transfusions prior to 1992. Nationally relevant for clinical records and safety screening, this code helps identify patients with potential transfusion-related risk factors that may affect current care decisions, infection screening, and blood product management. Recording this historical detail supports continuity of care and accurate medical histories across settings.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for G9449, typical sites of service, and the role of the code in medical documentation. The publication also summarizes payer coverage considerations, common modifiers associated with encounters that include historical documentation, and where this code fits in service line reporting. Policy-related notes cover national implications for record keeping and infection control screening tied to pre-1992 transfusion status.
Data not available in the input for associated taxonomies, specific ICD-10 diagnoses, related codes, and service line detail.
Billing Code Overview
HCPCS Level II code G9449 documents a history of receiving blood transfusions prior to 1992. This code is used to record patient history information related to past blood transfusion events occurring before 1992.
Service type: Historical health information / medical history coding
Typical site of service: Outpatient clinic, hospital outpatient department, or any ambulatory care setting where medical history is recorded
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult who reports a history of receiving blood transfusions prior to 1992 and presents to an outpatient infectious disease clinic or public health screening site for documentation and counseling related to transfusion-associated infectious disease risk. The clinical workflow often begins with intake screening where the patient’s transfusion history is recorded, including date(s), facility, and indication. A clinician or trained nurse documents the history using billing code G9449, assesses need for laboratory testing (for example, hepatitis C antibody, HIV, or hepatitis B surface antigen), and orders appropriate diagnostic tests if clinical risk factors or symptoms are present. Counseling is provided regarding prior transfusion risks, reporting, and follow-up. Typical settings include outpatient clinics (infectious disease, primary care, hematology), public health departments, and transfusion medicine services. Patients are commonly older adults who received transfusions before widespread blood screening began in 1992; visits emphasize documentation, risk assessment, and coordination of any needed testing or referral.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when documentation supports substantially greater than usual services for counseling or complex documentation related to transfusion history. |