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I5A

I5A: Non-ischemic myocardial injury (non-traumatic)

Billable / specific codeICD-10-CM

I5A is a billable, specific ICD-10-CM code for non-ischemic myocardial injury (non-traumatic). It is valid for submission on a claim.

Check I5A with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • acute myocardial infarction (I21.-)
  • injury of heart (S26.-)

Excludes2: not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

  • other acute ischemic heart diseases (I24.-)

Code first

The underlying condition must be sequenced before this code.

  • the underlying cause, if known and applicable, such as:
  • acute kidney failure (N17.-)
  • acute myocarditis (I40.-)
  • cardiomyopathy (I42.-)
  • chronic kidney disease (CKD) (N18.-)
  • heart failure (I50.-)
  • hypertensive urgency (I16.0)
  • nonrheumatic aortic valve disorders (I35.-)
  • paroxysmal tachycardia (I47.-)
  • pulmonary embolism (I26.-)
  • pulmonary hypertension (I27.0, I27.2-)
  • sepsis (A41.-)
  • takotsubo syndrome (I51.81)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Acute (non-ischemic) myocardial injury
  • Chronic (non-ischemic) myocardial injury
  • Unspecified (non-ischemic) myocardial injury

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

I5A is named in 6 Medicare coverage policies: 6 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A53775Billing and Coding: Frequency and Duration for Cardiac Rehabilitation and Intensive Cardiac Rehabilitation
  • A56391Billing and Coding: Implantable Automatic Defibrillators
  • A57083Billing and Coding: B-type Natriuretic Peptide (BNP) Testing
  • A59268Billing and Coding: Ambulatory Electrocardiograph (AECG) Monitoring

Alphabetic index entries that lead here

  • Neurogenic stunned myocardium
  • Stunned myocardium, neurogenic
  • Injury›myocardial(acute) (chronic) (non-ischemic) (non-traumatic)
  • Injury›heart›non-traumatic(acute) (chronic) (non-ischemic)

Code history

Unchanged in every release from FY2024 to FY2027.

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.