Athscl heart dis of native cor art with refract ang pctrs

This code signifies a chronic form of ischemic heart disease characterized by the hardening and narrowing of the native coronary arteries due to plaque buildup, resulting in persistent and severe chest pain (angina) that does not respond to standard medical therapies. It indicates advanced coronary artery disease where typical treatments for angina have failed to provide adequate relief.

Use this code when documentation explicitly states atherosclerotic heart disease of the patient's original coronary arteries and specifies that the angina pectoris is "refractory" or "intractable" to conventional medical management. This typically applies to patients who continue to experience debilitating angina despite optimal anti-anginal medications, revascularization procedures, or other interventions.

• Ensure documentation clearly distinguishes between native coronary arteries and bypass grafts.
• Verify that the angina is explicitly stated as "refractory" or "intractable"; do not assume based on severity alone.
• Code also any associated complications or manifestations of the atherosclerotic heart disease.