ICD-10 I5A
Billable / SpecificNon-ischemic myocardial injury (non-traumatic)
About ICD-10-CM I5A
ICD-10-CM code I5A represents Non-ischemic myocardial injury (non-traumatic). This is a billable/specific code in the Circulatory System chapter (block I5A). The 2026 edition of ICD-10-CM I5A became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under I5A. Per CMS ICD-10-CM Tabular 2026.
- Acute (non-ischemic) myocardial injury
- Chronic (non-ischemic) myocardial injury
- Unspecified (non-ischemic) myocardial injury
Type 1 Excludes
Pure excludes, these codes can never be coded together with I5A. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- acute myocardial infarction (I21.-)
- injury of heart (S26.-)
Type 2 Excludes
Not included here, the excluded code is not part of I5A, but a patient may have both conditions at the same time. Both codes may be coded together when applicable.
- other acute ischemic heart diseases (I24.-)
Coding Notes
Code First
- 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)
Medicare LCD Coverage for I5A
Local Coverage Determinations (LCDs) from CMS MACs that list I5A as a covered diagnosis.
Showing top 10 of 210 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing I5A.
5 Medicare
CPT Codes Commonly Billed with I5A
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- G0448 CMS LCD: Billing and Coding: Implantable Automatic Defibrillators CMS LCD
- 33216 CMS LCD: Billing and Coding: Implantable Automatic Defibrillators CMS LCD
- 33230 CMS LCD: Billing and Coding: Implantable Automatic Defibrillators CMS LCD
- 33244 CMS LCD: Billing and Coding: Implantable Automatic Defibrillators CMS LCD
- 33264 CMS LCD: Billing and Coding: Implantable Automatic Defibrillators CMS LCD
- 33263 CMS LCD: Billing and Coding: Implantable Automatic Defibrillators CMS LCD
- 33220 CMS LCD: Billing and Coding: Implantable Automatic Defibrillators CMS LCD
- 33224 CMS LCD: Billing and Coding: Implantable Automatic Defibrillators CMS LCD
- 33270 CMS LCD: Billing and Coding: Implantable Automatic Defibrillators CMS LCD
- 33272 CMS LCD: Billing and Coding: Implantable Automatic Defibrillators CMS LCD
Codes Adjacent To I5A
Other codes in section I30-I5A (Other forms of heart disease).
ICD-10 I5A, Billing FAQ
Is ICD-10 code I5A billable? +
Yes, I5A is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to I5A? +
ICD-10 I5A includes: Acute (non-ischemic) myocardial injury; Chronic (non-ischemic) myocardial injury; Unspecified (non-ischemic) myocardial injury.
What codes are Type 1 Excludes for I5A? +
Type 1 Excludes (never code together with I5A): acute myocardial infarction (I21.-); injury of heart (S26.-)
What codes are Type 2 Excludes for I5A? +
Type 2 Excludes (may be coded together when both conditions exist): other acute ischemic heart diseases (I24.-)
What CPT codes are commonly billed with I5A? +
Procedures frequently paired with I5A include: G0448, 33216, 33230, 33244, 33264.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on July 17, 2026.
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