ICD-10-CM diagnosis code
I25.82 Chronic total occlusion of coronary artery
- Billable
- Yes, a complete code (FY2026)
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Other codes in I25
56 complete codes in this category.
- I25.792Atherosclerosis of other coronary artery bypass graft(s) with refractory angina pectoris
- I25.798Atherosclerosis of other coronary artery bypass graft(s) with other forms of angina pectoris
- I25.799Atherosclerosis of other coronary artery bypass graft(s) with unspecified angina pectoris
- I25.810Atherosclerosis of coronary artery bypass graft(s) without angina pectoris
- I25.811Atherosclerosis of native coronary artery of transplanted heart without angina pectoris
- I25.812Atherosclerosis of bypass graft of coronary artery of transplanted heart without angina pectoris
- I25.82Chronic total occlusion of coronary artery
- I25.83Coronary atherosclerosis due to lipid rich plaque
- I25.84Coronary atherosclerosis due to calcified coronary lesion
- I25.85Chronic coronary microvascular dysfunction
- I25.89Other forms of chronic ischemic heart disease
- I25.9Chronic ischemic heart disease, unspecified
Documentation tips
- Make sure the note supports every element of the title, “Chronic total occlusion of coronary artery”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to I25.
The international WHO ICD-10 also has I25, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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