Other acute ischemic heart diseases (I24)
The ICD-10 codes within category I24 cover various types of other acute ischemic heart diseases that are distinct from classic heart attacks. These codes are used to identify specific heart conditions caused by sudden inadequate blood flow to heart tissue without necessarily resulting in a full myocardial infarction.
This section includes I24.0 for acute coronary thrombosis not resulting in myocardial infarction, which describes blockages such as right or left coronary artery thrombosis that cause ischemia without heart muscle death. I24.1 designates Dressler’s syndrome, a post-heart attack inflammatory condition also known as postmyocardial infarction pericarditis. Other codes like I24.8 and I24.89 cover various other acute ischemic conditions, including acute coronary microvascular dysfunction and acute coronary insufficiency, both related to disrupted oxygen supply to the heart. When the specific ischemic cause is unclear, I24.9 is used as an unspecified code. Understanding these distinctions helps medical coders correctly apply the ICD-10 code for acute ischemic heart disease cases that do not fit typical myocardial infarction definitions.
Diseases of the circulatory system (I00–I99)
Ischemic heart diseases (I20-I25)
I24 Other acute ischemic heart diseases
- I24.0 Acute coronary thrombosis not resulting in myocardial infarction
- I24.1 Dressler's syndrome
I24.8 Other forms of acute ischemic heart disease
- I24.81 Acute coronary microvascular dysfunction
- I24.89 Other forms of acute ischemic heart disease
- I24.9 Acute ischemic heart disease, unspecified
Other acute ischemic heart diseases (I24)
Instructional Notations
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
Clinical Terms
The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.
Acute Coronary Syndrome
An episode of MYOCARDIAL ISCHEMIA that generally lasts longer than a transient anginal episode that ultimately may lead to MYOCARDIAL INFARCTION.
Coronary Occlusion
Complete blockage of blood flow through one of the CORONARY ARTERIES, usually from CORONARY ATHEROSCLEROSIS.
