Athscl heart disease of native cor art w ang pctrs w spasm

This code signifies coronary artery disease characterized by the buildup of plaque within the native coronary arteries, which is causing chest pain (angina pectoris) that is specifically triggered by and associated with a documented spasm of these arteries. It describes a form of ischemic heart disease where both atherosclerosis and vasospasm contribute to the patient's symptoms.

Apply this code when documentation clearly indicates atherosclerotic heart disease affecting the patient's original coronary arteries, along with angina pectoris, and a physician's note or diagnostic test (e.g., angiography with provocative testing) confirms the presence of coronary artery spasm. This code is appropriate when both the fixed obstruction from atherosclerosis and the dynamic component of spasm are present and contributing to the angina.

• Ensure documentation explicitly states "atherosclerotic heart disease" and "angina pectoris with documented spasm."
• Do not use this code if only coronary artery spasm is present without underlying atherosclerosis; refer to the Excludes1 note for I20.1.
• Proper sequencing may be required if other cardiac conditions are also being treated; consider the primary reason for the encounter.