86171 Complement fixation each
Also known as: Complement fixation, CF test
Complement fixation test detects antibodies to specific antigens by their ability to fix complement, used for infectious disease diagnosis and syphilis serology.
In Plain Language
Infection diagnosis test; Antibody detection using complement
Clinical Context
Traditional method for diagnosing fungal infections, certain viral infections, and syphilis. Detects antibodies indirectly through complement consumption.
RVU Information
CPT 86171 does not have a physician work RVU assigned by CMS. Reimbursement for this code is determined by payer-specific fee schedules.
Billing & Documentation
Lab and pathology codes require an order from the treating provider with clinical indication. For molecular pathology and genetic testing, document the specific analytes tested and clinical rationale.
How This Code Compares
This code has a work RVU of 0.00, meaning it does not have a physician work component assigned by CMS. In the Pathology & Lab category, 94% of codes share this characteristic.
Specialties
Frequently Asked Questions
What is CPT code 86171?
CPT 86171 (Complement fixation each) is a Pathology & Lab code. Complement fixation test detects antibodies to specific antigens by their ability to fix complement, used for infectious disease diagnosis and syphilis serology.
Who uses CPT code 86171?
CPT 86171 is used by Microbiology, Immunology, Infectious Disease. Traditional method for diagnosing fungal infections, certain viral infections, and syphilis. Detects antibodies indirectly through complement consumption.
When is CPT 86171 used?
Traditional method for diagnosing fungal infections, certain viral infections, and syphilis. Detects antibodies indirectly through complement consumption.
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.