2026 ICD-10-CM Diagnosis Code I24.1Dressler's syndrome

ICD-10-CM Codes›I00–I99›I20-I25›I24

ICD-10-CM I24.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

I24.1 is a billable ICD-10-CM diagnosis code for Dressler's syndrome. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 314 through 316. Coders also document this condition as delayed postmyocardial infarction pericarditis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complications of acute myocardial infarction.

Code Identity

ICD-10-CM Code
I24.1
Billable Status
Yes — Valid for Submission
Code Describes
Dressler's syndrome
Short Description
Dressler's syndrome
Same as the full description in the CMS dataset.
Parent Code
I24
Other acute ischemic heart diseases

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI20-I25Ischemic heart diseases
CategoryI24Other acute ischemic heart diseases
This CodeI24.1Dressler's syndrome

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Delayed postmyocardial infarction pericarditis
  • Early postmyocardial infarction pericarditis
  • Pericarditis secondary to acute myocardial infarction
  • Post-cardiac injury syndrome
  • Post-infarction pericarditis
  • Postmyocardial infarction pericardial effusion

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Postmyocardial infarction syndrome

Type 1 Excludes

  • postinfarction angina I23.7

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Dressler's syndrome
    • Pericarditis(with decompensation) (with effusion)
      • postinfarction
    • Syndrome
      • Dressler's (postmyocardial infarction)
    • Syndrome
      • postcardiac injury
        • postmyocardial infarction
    • Syndrome
      • postinfarction
    • Syndrome
      • postmyocardial infarction

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR CIR010
Complications of acute myocardial infarction
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Heart Attack

Each year almost 800,000 Americans have a heart attack. A heart attack happens when blood flow to the heart suddenly becomes blocked. Without the blood coming in, the heart can't get oxygen. If not treated quickly, the heart muscle begins to die.

Read the full article at MedlinePlus

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

Convert I24.1 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
411.0 Post MI syndrome
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About I24.1Overview

Is I24.1 (Other acute ischemic heart diseases) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report Dressler's syndrome on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does I24.1 group to?

When Dressler's syndrome is the principal diagnosis on an inpatient stay, it groups to MS-DRG 314, 315, 316, with relative weights from 0.6821 to 2.0852 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of I24.1?

Under the General Equivalence Mappings, Dressler's syndrome converts to ICD-9-CM 411.0 (post MI syndrome). The mapping is a direct match.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.