2027 ICD-10-CM Diagnosis Code I24Other acute ischemic heart diseases

ICD-10-CM Codes›I00–I99›I20-I25›I24

ICD-10-CM I24
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

I24 is a non-billable ICD-10-CM category code for other acute ischemic heart diseases, so it cannot be submitted on claims. Use a more specific code from this category instead, such as I24.0, I24.1, I24.81, and I24.89.

Code Identity

ICD-10-CM Code
I24
Billable Status
No — Non-Billable Category
Code Describes
Other acute ischemic heart diseases
Short Description
Other acute ischemic heart diseases
Same as the full description in the CMS dataset.
Chapter
I20-I25
Ischemic heart diseases

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI20-I25Ischemic heart diseases
CategoryI24Other acute ischemic heart diseases
This CodeI24Other acute ischemic heart diseases

Specific Coding for Other acute ischemic heart diseasesOverview

Non-specific codes like I24 require more characters. Use one of these billable codes instead:

  • Use I24.0 for Acute coronary thrombosis not resulting in myocardial infarction

  • Use I24.1 for Dressler's syndrome

  • I24.8 for Other forms of acute ischemic heart disease

  • Use I24.81 for Acute coronary microvascular dysfunction

  • Use I24.89 for Other forms of acute ischemic heart disease

  • Use I24.9 for Acute ischemic heart disease, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to I24: its own notes plus those printed at block I20-I25 and Chapter 9. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • angina pectoris (I20.-)
  • transient myocardial ischemia in newborn (P29.4)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

On I24 itself
  • non-ischemic myocardial injury (I5A)
From Chapter 9 (I00-I99) Diseases of the circulatory system applies to 1,433 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • transient cerebral ischemic attacks and related syndromes (G45.-)

Code Also

A second code may be needed to fully describe the condition; the note gives no sequencing direction.

From Block I20-I25 Ischemic heart diseases applies to 94 codes
  • the presence of hypertension (I10-I1A)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name I24, its category, or a range that includes it.

Excludes2 3

These codes carry an Excludes2 note naming I24: its condition is not part of those codes, and both may be reported when the patient has both.

  • I5A Non-ischemic myocardial injury (non-traumatic)
    other acute ischemic heart diseases (I24.-)
  • I74 Arterial embolism and thrombosis
    coronary embolism and thrombosis (I21-I25) names I21-I25, which includes this code
  • I82 Other venous embolism and thrombosis
    coronary (I21-I25) names I21-I25, which includes this code

Patient EducationClinical

Coronary Artery Disease

Coronary artery disease (CAD) is the most common type of heart disease in the United States and a leading cause of death for both men and women.

The full article covers:

  • What is coronary artery disease?
  • What causes coronary artery disease?
  • What are the types of coronary artery disease?
  • Who is more likely to have coronary artery disease?
  • What are symptoms of coronary artery disease?
  • What other problems does coronary artery disease cause?
  • How is coronary artery disease diagnosed?
  • What are the treatments for coronary artery disease?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About I24Overview

What is the ICD-10 code for other acute ischemic heart diseases?

I24 is the ICD-10-CM category for other acute ischemic heart diseases, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is I24 (Other acute ischemic heart diseases) a billable code?

No. This is a category header that groups the codes for other acute ischemic heart diseases, and headers cannot be submitted on claims. Claims for other acute ischemic heart diseases need a more specific code from this category, such as I24.0, I24.1, and I24.81.

Can I24 be reported with a code from I20?

Not as a rule. The Excludes1 note on I24 lists "angina pectoris (I20.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).