Other acute ischemic heart diseases (I24) ICD-10-CM
The I24 code range covers other acute ischemic heart diseases with 7 ICD-10-CM diagnosis codes. 5 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
- non-ischemic myocardial injury I5A
Codes in the I24 Range 7 codes · 5 billable
- I24 Other acute ischemic heart diseasesNon-billable
- I24.0 Acute coronary thrombosis not resulting in myocardial infarction
- I24.1 Dressler's syndrome
- I24.8 Other forms of acute ischemic heart diseaseNon-billable
- I24.81 Acute coronary microvascular dysfunction
- I24.89 Other forms of acute ischemic heart disease
- I24.9 Acute ischemic heart disease, unspecified
About the I24 Code Range
A blood clot in a coronary artery that does not result in a heart attack sits alongside Dressler's syndrome and other acute ischemic heart disease.
I24.0 identifies the clot without a resulting heart attack, and I24.1 identifies Dressler's syndrome. I24.8 groups other forms, separating dysfunction in small coronary blood vessels at I24.81 from other forms at I24.89. I24.9 is for unspecified acute ischemic heart disease.
Questions About This Page
How many billable codes are in the I24 range?
Of the 7 codes in this range, 5 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the I24 range classify?
The range classifies other acute ischemic heart diseases. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
