I25
Chronic ischemic heart disease
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 11 never code together
I00-I99chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
- systemic connective tissue disorders (M30-M36)M30-M36
- transient cerebral ischemic attacks and related syndromes (G45.-)G45.-
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 8
I25code
Use additional code
- code to identify:
- chronic total occlusion of coronary artery (I25.82)I25.82I25.82I25.82
- exposure to environmental tobacco smoke (Z77.22)Z77.22Z77.22Z77.22
- history of tobacco dependence (Z87.891)Z87.891Z87.891Z87.891
- occupational exposure to environmental tobacco smoke (Z57.31)Z57.31Z57.31Z57.31
- tobacco dependence (F17.-)F17.-F17.-F17.-
- tobacco use (Z72.0)Z72.0Z72.0Z72.0
Index entries leading here filed at null
No alphabetic index entry points at this code.
Subordinate codes 9
I25.1 Atherosclerotic heart disease of native coronary artery I25.2 Old myocardial infarction I25.3 Aneurysm of heart I25.4 Coronary artery aneurysm and dissection I25.5 Ischemic cardiomyopathy I25.6 Silent myocardial ischemia I25.7 Athscl CABG and cor art of transplanted heart w ang pctrs I25.8 Other forms of chronic ischemic heart disease I25.9 Chronic ischemic heart disease, unspecified
Medications 1
MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.