Atherosclerosis of CABG, unsp, w oth angina pectoris

This code describes the presence of atherosclerosis affecting a coronary artery bypass graft (CABG), where the specific type of graft is not documented. The patient also experiences other forms of angina pectoris, such as unstable angina or variant angina, which are attributed to this graft disease.

Use this code when documentation explicitly states atherosclerosis of a CABG, without specifying the graft type (e.g., saphenous vein, internal mammary artery), and the patient presents with angina that is not typical, stable, or due to spasm. Supporting documentation would include physician notes detailing the diagnosis of graft atherosclerosis and the presence of atypical angina symptoms.

• Confirm that the angina is explicitly linked to the bypass graft atherosclerosis and is not described as stable or typical.
• Ensure the documentation does not specify the type of bypass graft, as more specific codes exist for saphenous vein or arterial grafts.
• Remember the Excludes1 note: do not code this with I20.8- if the angina is not associated with CABG atherosclerosis.