Athscl autologous artery CABG w unsp angina pectoris

This code describes the presence of atherosclerosis specifically affecting an autologous (patient's own tissue) artery graft that was previously used in a coronary artery bypass graft (CABG) procedure. The patient is also experiencing unspecified angina pectoris, which is chest pain due to myocardial ischemia, but without further characterization of its type.

This code is appropriate when a patient with a history of CABG using an autologous artery graft presents with angina, and diagnostic studies confirm atherosclerotic changes within that specific graft. Documentation must clearly state "atherosclerosis of autologous artery bypass graft" and "unspecified angina pectoris."

• Ensure the documentation specifies "autologous artery" graft, not a synthetic or venous graft, as different codes apply.
• Do not use this code if the angina is specified as stable, unstable, or another specific type; a more precise angina code would be required.
• Remember the Excludes1 note: this code cannot be reported with I20.9 (unspecified angina pectoris without atherosclerosis of autologous artery coronary artery bypass graft(s)).