85335 Factor inhibitor test
Also known as: factor inhibitor test, inhibitor assay
Detection assay for factor inhibitors (antibodies against coagulation factors, typically factor VIII or IX inhibitors) using plasma mixing studies and confirmatory testing.
In Plain Language
clotting factor antibody test; inhibitor detection
Clinical Context
Detects alloimmunization to factor VIII or IX in hemophilia patients receiving replacement therapy, requiring modified treatment strategies and immunosuppression.
RVU Information
CPT 85335 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 85335?
CPT 85335 (Factor inhibitor test) is a Pathology & Lab code. Detection assay for factor inhibitors (antibodies against coagulation factors, typically factor VIII or IX inhibitors) using plasma mixing studies and confirmatory testing.
Who uses CPT code 85335?
CPT 85335 is used by Clinical Pathology, Coagulation, Hematology. Detects alloimmunization to factor VIII or IX in hemophilia patients receiving replacement therapy, requiring modified treatment strategies and immunosuppression.
When is CPT 85335 used?
Detects alloimmunization to factor VIII or IX in hemophilia patients receiving replacement therapy, requiring modified treatment strategies and immunosuppression.
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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.