Athscl autologous vein CABG w unsp angina pectoris

This code describes the development of atherosclerosis within a patient's own vein that was surgically implanted to bypass a blocked coronary artery. The patient is experiencing chest pain or discomfort (angina pectoris) that has not been further specified as stable, unstable, or vasospastic.

Use this code when documentation confirms atherosclerosis affecting an autologous vein coronary artery bypass graft (CABG) and the patient presents with angina pectoris that is not specified further. This diagnosis requires a history of CABG and current evidence of graft disease with anginal symptoms.

• Ensure the documentation specifies an autologous vein graft, not an arterial graft or a non-autologous graft.
• Do not use this code if the angina is specified (e.g., stable, unstable); instead, select a more specific I25.71- subcategory.
• This code inherently includes the presence of angina; do not code I20.9 separately for the angina.