86161 Complement/function activity
Also known as: Complement activity, complement function test
Complement function or activity test measures the functional capacity of the complement cascade to generate complement activity and execute complement-mediated processes.
In Plain Language
Immune system function test; Complement effectiveness measure
Clinical Context
Assesses functional competence of classical or alternative complement pathways. Detects defects in complement pathway activation or regulation.
RVU Information
CPT 86161 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 86161?
CPT 86161 (Complement/function activity) is a Pathology & Lab code. Complement function or activity test measures the functional capacity of the complement cascade to generate complement activity and execute complement-mediated processes.
Who uses CPT code 86161?
CPT 86161 is used by Immunology, Clinical Pathology, Laboratory Medicine. Assesses functional competence of classical or alternative complement pathways. Detects defects in complement pathway activation or regulation.
When is CPT 86161 used?
Assesses functional competence of classical or alternative complement pathways. Detects defects in complement pathway activation or regulation.
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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.