I25
Non-billableChronic ischemic heart disease
Chronic ischemic heart disease
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •systemic connective tissue disordersM30-M36
- •transient cerebral ischemic attacks and related syndromesG45
- non-ischemic myocardial injury (I5A)
Use Additional Code
Additional codes that should follow this code
Code Also
A second code may be required; sequencing depends on circumstances
Child Codes (9)
I25.1Atherosclerotic heart disease of native coronary artery
I25.2Old myocardial infarction
I25.3Aneurysm of heart
I25.4Coronary artery aneurysm and dissection
I25.5Ischemic cardiomyopathy
I25.6Silent myocardial ischemia
I25.7Athscl CABG and cor art of transplanted heart w ang pctrs
I25.8Other forms of chronic ischemic heart disease
I25.9Chronic ischemic heart disease, unspecified
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(12)
UMLS
- Chronic ischaemic heart diseaseC0264694
- Chronic ischaemic heart disease, unspecifiedC0264694
- Chronic ischemic heart diseaseC0264694
- Chronic ischemic heart disease (disorder)C0264694
- Chronic ischemic heart disease, unspecifiedC0264694
- Chronic myocardial ischaemiaC0264694
- Chronic myocardial ischemiaC0264694
- Chronic myocardial ischemia (disorder)C0264694
- Ischemic heart disease (chronic) NOSC0264694
- chronic ischaemic heart diseaseC0264694
- chronic ischemic heart diseaseC0264694
- ischemic heart disease chronicC0264694
Frequently Asked Questions
What is the ICD-10 code for chronic ischemic heart disease?
The ICD-10-CM code for chronic ischemic heart disease is I25. The full clinical description is "Chronic ischemic heart disease". I25 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code I25 mean?
ICD-10-CM code I25 represents “Chronic ischemic heart disease”. It is classified under Chapter 9: Diseases of the Circulatory System and is a non-billable header code. Use a more specific child code for billing purposes.
Is I25 a billable code?
No, I25 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 9 child codes under I25.
What chapter is I25 in?
I25 is in Chapter 9: Diseases of the Circulatory System (codes I00-I99).
What are the subcategories under I25?
I25 has 9 child codes, including: 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), and 5 more.
Are additional codes required with I25?
Yes, when using I25, also report: ; chronic total occlusion of coronary artery (I25.82); exposure to environmental tobacco smoke (Z77.22); history of tobacco dependence (Z87.891); occupational exposure to environmental tobacco smoke (Z57.31); tobacco dependence (F17.-); tobacco use (Z72.0).
What are the UMLS CUIs for I25?
I25 is linked to 1 UMLS Concept Unique Identifier: C0264694. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does I25 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like chronic ischemic heart disease affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of I25?
I25 maps to the ICD-11 code: BA5Z (Chronic ischaemic heart disease, unspecified).
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.