I5A — Non-ischemic myocardial injury (non-traumatic)
Is I5A billable?
Yes — I5A is billable for FY2027. I5A is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. I5A may be submitted for encounters from October 1, 2026 through September 30, 2027.
I5A at a glance
| Code | I5A |
|---|---|
| Description | Non-ischemic myocardial injury (non-traumatic) |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does I5A group to?
I5A sits in MDC 05 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 314Other Circulatory System Diagnoses with MCCmedical
- 315Other Circulatory System Diagnoses with CCmedical
- 316Other Circulatory System Diagnoses without CC/MCCmedical
As a secondary diagnosis, I5A is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is I5A listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to I5A. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Neurogenic stunned myocardium
- Stunned myocardium, neurogenic
- Injury › myocardial
- Injury › heart › non-traumatic
Excludes1 — never code together
The conditions below can never be reported together with I5A on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Code first
The underlying condition below must be sequenced before I5A. I5A describes a manifestation and cannot be the principal or first-listed diagnosis.
- 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)
Excludes2 — not included here
The conditions below are not part of I5A, but a patient may have both at the same time. When documentation supports it, I5A and the excluded code may both be reported.
- other acute ischemic heart diseases (I24.-)
Inclusion terms
Alternative wording in documentation that is classified to I5A.
- Acute (non-ischemic) myocardial injury
- Chronic (non-ischemic) myocardial injury
- Unspecified (non-ischemic) myocardial injury
Excludes2 — not included here — inherited from Chapter 9
The conditions below are not part of I5A, but a patient may have both at the same time. When documentation supports it, I5A and the excluded code may both be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- transient cerebral ischemic attacks and related syndromes (G45.-)
How long has I5A existed?
I5A first appears in FY2022.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with I5A?
ICD-10-CM declares these codes mutually exclusive with I5A — exactly one of each pair can be correct for a given encounter.