The AMA introduced two new codes in CPT 2007 to report warfarin sodium (an anticoagulant also known by the brand name Coumadin) management in an outpatient setting: 99363 – Anticoagulant management for an outpatient taking warfarin physician review and interpretation of International Normalized Ratio (INR) testing, patient instructions, dosage adjustment (as needed), and ordering of additional tests; initial 90 days of therapy (must include a minimum of 8 INR measurements) 99364 – Anticoagulant management for an outpatient [...]
