85610 Prothrombin time
Also known as: PT, prothrombin time, INR
Prothrombin time test measures the time for plasma to clot after addition of tissue factor, assessing extrinsic and common coagulation pathway function and monitoring anticoagulation therapy.
In Plain Language
Blood clotting test; Warfarin monitoring test
Clinical Context
Primary screening test for coagulation disorders, liver disease, and vitamin K deficiency. Essential for monitoring warfarin (Coumadin) therapy and assessing preoperative hemostasis.
RVU Information
CPT 85610 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 85610?
CPT 85610 (Prothrombin time) is a Pathology & Lab code. Prothrombin time test measures the time for plasma to clot after addition of tissue factor, assessing extrinsic and common coagulation pathway function and monitoring anticoagulation therapy.
Who uses CPT code 85610?
CPT 85610 is used by Hemostasis/Thrombosis, Clinical Pathology, Clinical Chemistry. Primary screening test for coagulation disorders, liver disease, and vitamin K deficiency. Essential for monitoring warfarin (Coumadin) therapy and assessing preoperative hemostasis.
When is CPT 85610 used?
Primary screening test for coagulation disorders, liver disease, and vitamin K deficiency. Essential for monitoring warfarin (Coumadin) therapy and assessing preoperative hemostasis.
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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.