I24.9 — Acute ischemic heart disease, unspecified

I24.9

ICD-10 Chapter 9: Circulatory System — illustrative image — Chapter 9: Diseases of the circulatory system (I00–I99) — illustrative image

What this code means

Acute ischaemic heart disease: a sudden reduction in blood flow to the heart muscle, recorded without further detail.

Also called: acute ischemic heart disease, acute coronary syndrome.

When this code is used

Used for acute ischaemic heart disease, unspecified.

Where it sits in ICD-10-CM

Code I24.9 belongs to Chapter 9: Diseases of the circulatory system, which covers codes I00–I99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.

Related symptoms

Chest pain

Related anatomy

Heart

Frequently asked questions

What is ICD-10-CM code I24.9?

I24.9 is the ICD-10-CM diagnosis code for “Acute ischemic heart disease, unspecified”. Acute ischaemic heart disease: a sudden reduction in blood flow to the heart muscle, recorded without further detail.

When is code I24.9 used?

Used for acute ischaemic heart disease, unspecified. It belongs to Chapter 9 of ICD-10-CM (Diseases of the circulatory system).

This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.