Clinical Background. Prothrombin, or factor II, is the precursor of thrombin; as such, it plays a key role in the balance between procoagulation and anticoagulation. A prothrombin genetic variant known as 20210G A is associated with elevated levels of prothrombin and with thrombophilia.
The CPT codebook should be updated every 3-5 years. In a concise statement, ICD-9 is the code used to describe the condition or disease being treated, also known as the diagnosis. CPT is the code used to describe the treatment and diagnostic services provided for that diagnosis.
(continued) Harvard Pilgrim Health CareâProvider Manual H.358 January 2015 Overview 1 Some services or procedures performed by providers might not have specific Current Procedure Codes (CPT) or HCPCS codes.