85303 Clot inhibit prot c activity
Also known as: protein C activity, functional protein C
Assay of protein C functional activity using chromogenic substrate or clotting methodology to measure anticoagulant and fibrinolytic activity of activated protein C.
In Plain Language
anticlotting protein C function; protein C activity test
Clinical Context
Evaluates protein C deficiency in thrombophilia and warfarin therapy, detects protein C inhibitors, and assesses activated protein C resistance.
RVU Information
CPT 85303 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 85303?
CPT 85303 (Clot inhibit prot c activity) is a Pathology & Lab code. Assay of protein C functional activity using chromogenic substrate or clotting methodology to measure anticoagulant and fibrinolytic activity of activated protein C.
Who uses CPT code 85303?
CPT 85303 is used by Clinical Pathology, Coagulation, Hematology. Evaluates protein C deficiency in thrombophilia and warfarin therapy, detects protein C inhibitors, and assesses activated protein C resistance.
When is CPT 85303 used?
Evaluates protein C deficiency in thrombophilia and warfarin therapy, detects protein C inhibitors, and assesses activated protein C resistance.
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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.