DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

I5A diagnosis code · Billable category · FY2027

I5A Non-ischemic myocardial injury (non-traumatic)

  • Billable
  • CC
  • POA reported

I5A ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.

CC / MCC
CC
MS-DRG
314-316
HCC V28
–
POA
Reported
Code Editor
–
Index entries
4

Instructions

At I5A

Inclusion terms

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

Excludes1

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

Excludes2

  • other acute ischemic heart diseases (I24.-) I24

Code first

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

Notes that also apply

Chapter 9 instructions (Excludes2 10): printed on the chapter 9 page.

Index entries

  • Neurogenic stunned myocardium → I5A
  • Stunned myocardium, neurogenic → I5A
  • Injurymyocardial (acute) (chronic) (non-ischemic) (non-traumatic) → I5A
  • Injuryheart (traumatic)non-traumatic (acute) (chronic) (non-ischemic) → I5A

NCHS Alphabetic Index. Index first, then the Tabular List.

Medicare grouping and edits

CMS files for I5A
CC / MCCCC
PDX exclusion list0826 (66 codes)
Appendix BMDC 05 Diseases and Disorders of the Circulatory System, MS-DRG 314-316 (Other Circulatory System Diagnoses with MCC…)
Code Editor–
POAReported
HCC V28–

CC as a secondary diagnosis, not when the principal diagnosis is on its PDX exclusion list.

CMS: MS-DRG v44 (Appendix B, C), MCE v44, POA list FY2027, 2027 Initial ICD-10-CM Mappings. What the rows mean.

Hierarchy