I25.738

HCC Category Mapping

What This Code Means

This code describes a condition where fatty deposits have built up in a coronary artery bypass graft made from biological material (not from the patient's own tissue), causing chest pain or discomfort of a type other than the most severe forms. The narrowing of this graft reduces blood flow to the heart muscle.

Coding Tips

• •Verify the graft type is specifically nonautologous biological (such as cadaver or xenograft) rather than autologous (patient's own vein/artery) or synthetic material, as this distinction is critical for accurate coding
• •Ensure documentation specifies the type of angina pectoris present (such as angina with documented spasm, angina with coronary vasospasm, or other anginal syndrome) to support the 'other forms' designation in the code

Clinical Significance

This code captures atherosclerosis of a nonautologous biological coronary bypass graft with angina that is documented but does not meet criteria for unstable, vasospastic, or refractory angina. This typically encompasses stable exertional angina or angina equivalents in the setting of biological graft degeneration. Proper classification aids in treatment planning specific to the graft type.

Documentation Requirements

• ✓History of CABG with nonautologous biological graft confirmed
• ✓Evidence of atherosclerosis within the biological graft
• ✓Angina documentation that characterizes the type but excludes unstable, vasospastic, and refractory categories
• ✓Functional classification of angina severity if available
• ✓Provider attribution of angina to graft atherosclerosis

Commonly Confused Codes