Athscl CABG, unspecified, with refractory angina pectoris

This code signifies the presence of atherosclerosis affecting one or more coronary artery bypass grafts, where the specific graft involved is not documented. The patient experiences refractory angina pectoris, meaning their chest pain is persistent and not adequately relieved by standard medical therapies. This indicates ongoing myocardial ischemia despite prior revascularization.

Use this code when documentation clearly states atherosclerosis of a CABG, without specifying which graft (e.g., saphenous vein graft, internal mammary artery graft), and the patient is suffering from refractory angina. This code is appropriate when the physician explicitly diagnoses "refractory angina" in the context of graft atherosclerosis.

• Ensure documentation specifies "refractory angina" and not just "angina pectoris" to support this specific code.
• If the specific bypass graft affected by atherosclerosis is known, a more specific code within the I25.7 category should be used.
• Always sequence this code after the underlying coronary artery disease (I25.10) if still present and being treated.