Billable / Specific Code
ICD-10-CM I24.9 is the diagnosis code for Acute ischemic heart disease, unspecified. This code falls under the section "Ischemic heart diseases" within Chapter 9 — Diseases of the circulatory system (I00-I99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as I24.9. They are mutually exclusive:
Understanding where I24.9 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, I24.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
I24.9 is the ICD-10-CM diagnosis code for "Acute ischemic heart disease, unspecified". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of I24.9 is I24 ("Other acute ischemic heart diseases"). I24.9 provides a more specific classification within this category.
I24.9 is located in Section I20-I25 — "Ischemic heart diseases" within Chapter 9 of the ICD-10-CM Tabular List.
Use I24.9 when the patients documented diagnosis matches "Acute ischemic heart disease, unspecified" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Acute ischemic heart disease, unspecified is I24.9.
Yes, I24.9 can be used as a primary diagnosis code since it is billable and specific.
I24.9 is in Chapter 9 of the ICD-10-CM Tabular List.
Type 1 Excludes for I24.9 include: ischemic heart disease (chronic) NOS (I25.9).
Yes, I24.9 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.