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.
Level II of the HCPCS is a standardized coding system that is used primarily to identify products, supplies, and services not included in the CPT-4 codes, such as ambulance services and durable medical equipment, prosthetics, orthotics, and supplies (DMEPOS) when used outside a physician's office.ecause Medicare and other insurers cover a variety of services, supplies, and equipment that are not identified by CPT-4 codes, the level II HCPCS codes were established for submitting claims for these items.