Summary & Overview
HCPCS M1235: Documentation of Prior HCV Antibody or RNA Test
HCPCS Level II code M1235 is used to capture documentation or patient-reported evidence that an HCV antibody or HCV RNA test was performed prior to a defined performance period. This code enables clinicians and reporting entities to record existing laboratory proof of hepatitis C testing without repeating the test, supporting continuity of care and quality measurement related to HCV screening and management. Nationally, accurate capture of prior HCV testing affects public health surveillance, quality reporting, and care coordination for patients at risk of or living with HCV.
Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of what M1235 represents, typical service settings, and why the code matters for documentation and reporting workflows. The publication also outlines expected benchmarking and policy considerations relevant to HCV testing documentation, clinical context for using a documentation code versus new testing, and practical implications for claims processing and quality measurement. Data not available in the input for specific reimbursement rates, associated taxonomies, and ICD-10 diagnosis pairings is noted where applicable.
Billing Code Overview
HCPCS Level II code M1235 documents a prior hepatitis C virus (HCV) test result when the patient report or external documentation confirms an HCV antibody test or HCV RNA test occurred before the performance period. The service type is documentation of prior laboratory testing rather than performance of a new laboratory procedure. The typical site of service is outpatient or ambulatory clinical settings where medical records and patient-reported histories are reviewed, such as primary care clinics, specialty hepatology or infectious disease clinics, and outpatient behavioral health settings that manage HCV screening and treatment.
Clinical & Coding Specifications
Clinical Context
A patient presents to an outpatient clinic or community health center for hepatitis C virus (HCV) care coordination. The patient reports or presents prior laboratory documentation showing a positive or negative HCV antibody test or an HCV RNA test performed before the current performance period. Typical workflow: staff or clinician reviews the outside lab report or patient-provided record, confirms test type and date, reconciles results in the medical record, and documents the prior HCV antibody or HCV RNA test as meeting a measure requirement. Typical sites of service include primary care clinics, federally qualified health centers, infectious disease clinics, substance use disorder treatment programs, and mobile/community screening programs. Typical patient scenario: an adult with a history of injection drug use who seeks follow-up care; the patient brings results from a community screening event showing an HCV antibody test performed two months earlier. The clinician documents the prior HCV antibody result and orders confirmatory RNA testing or links the patient to treatment as clinically indicated. Common payors encountered include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, and Medicare.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | When additional documentation shows work is substantially greater than usual for documentation of prior HCV test beyond standard review |