I25Header code — not billable
Chronic ischemic heart disease
- Chapter
- 9. Diseases of the circulatory system
- Category
- I25
- Effective date
- October 1, 2026
Related codes in category I25
I25.1Atherosclerotic heart disease of native coronary arteryI25.10Athscl heart disease of native coronary artery w/o ang pctrsYesI25.11Athscl heart disease of native coronary artery w ang pctrsI25.110Athscl heart disease of native cor art w unstable ang pctrsYesI25.111Athscl heart disease of native cor art w ang pctrs w spasmYesI25.112Athscl heart dis of native cor art with refract ang pctrsYesI25.118Athscl heart disease of native cor art w oth ang pctrsYesI25.119Athscl heart disease of native cor art w unsp ang pctrsYesI25.2Old myocardial infarctionYesI25.3Aneurysm of heartYesI25.4Coronary artery aneurysm and dissectionI25.41Coronary artery aneurysmYes
Frequently asked questions
What is ICD-10 code I25?
I25 is an ICD-10-CM diagnosis code for Chronic ischemic heart disease.
Is I25 a billable code?
No. I25 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is I25 in?
I25 falls under Chapter 9: Diseases of the circulatory system.
When did I25 become effective?
I25 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to I25?
I25 belongs to category I25, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.