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.
HCPCS are codes generated by the federal government to describe procedures that have special significance to either the Medicaid or Medicare programs. There is some overlap between CPT codes and HCPCS. This is because level 1 HCPCS codes are, in fact, CPT codes. Level 2 HCPCS codes are unique codes that, for us, begin with a 'V' or a 'W'. There also exists a level 3 series of codes that I will address below.
In an earlier course we talked about CPT modifiers. HCPCS modifiers work in almost exactly the same way. The two code sets are so similar, in fact, that you can regularly use modifiers from one codeset to the other. The HCPCS modifier âLT, for example, is regularly used in CPT codes when you need to describe a bilateral procedure that was only performed on one side of the body.