I25.739 Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unspecified angina pectoris

ICD-10-CM I25.739: Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unspecified angina pectoris

ICD-10-CM code I25.739 represents atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unspecified angina pectoris. It is an active diagnosis concept within the ischemic heart diseases block, structured under a parent code for graft atherosclerosis with angina. The available sources establish its terminology, hierarchy, and placement in circulatory system classifications. 1 4

Plain-language overview

This active diagnosis concept is semantically classified as a disease or syndrome and carries the preferred name atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unspecified angina pectoris. 1

What this code represents

Code I25.739 is an active terminology entry representing the disease or syndrome of atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unspecified angina pectoris. 1

The code falls under the ischemic heart diseases block, specifically within chapter nine for diseases of the circulatory system, establishing its systemic classification. 4

Coding details

The parent concept for I25.739 is I25.73, which broadly covers atherosclerosis of nonautologous biological coronary artery bypass graft(s) with angina pectoris, and the target code has narrower concepts. 1

The official terminology record includes the abbreviation Athscl nonautologous biological CABG w unsp angina pectoris as a published designation for this specific diagnosis code. 1

Documentation considerations

Clinical literature indicates that patients with prior coronary artery bypass grafting often present with late recurrent angina resulting from bypass graft failure and progression of native coronary artery disease. 2

What the sources add

While the terminology record defines the code's semantic type as a disease or syndrome, a clinical review explains that patients with prior bypass grafting often experience late recurrent angina due to graft failure. 1 2

A Medicare billing and coding article for artificial hearts and percutaneous endovascular cardiac assist procedures lists I25.739, demonstrating its appearance in specific payer procedure device policies. 5

Coverage and utilization context

A federal definitions manual includes the exact description for I25.739 among a broader list of coronary artery bypass graft atherosclerosis codes with various forms of angina pectoris. 3

Sources

1. ICD-10-CM I25.739 terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Diagnostic and Management Strategies in Patients with Late Recurrent Angina after Coronary Artery Bypass Grafting — pmc.ncbi.nlm.nih.gov; accessed 2026-07-27.
3. ICD-10-CM/PCS MS-DRGv33 Definitions Manual — cms.gov; accessed 2026-07-27.
4. ICD-10 | Atherosclerosis of nonautologous biological coronary artery bypass graft(s) with unspecified angina pectoris (I25.739) — cdek.pharmacy.purdue.edu; accessed 2026-07-27.
5. Article - Billing and Coding: Artificial Hearts and Percutaneous Endovascular Cardiac Assist Procedures and Devices (A59657) — cms.gov; accessed 2026-07-27.
6. ICD-10 Codes for Bypass graft and transplant heart related angina — doccharge.com; accessed 2026-07-27.