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ICD-10 diagnosis code

I21.4 Acute subendocardial myocardial infarction

This page in Swedish

I21.4 is the ICD-10 code for Acute subendocardial myocardial infarction. It is a four-character subcategory of I21 (Acute myocardial infarction), the most specific level in the WHO edition. It belongs to the block I20–I25 (Ischaemic heart diseases) in Chapter IX, Diseases of the circulatory system.

Code type
Subcategory (4 characters)
Chapter
IX · I00–I99
Classification
WHO ICD-10, 2019 version

What I21.4 includes

Conditions and terms that are coded here.

  • Myocardial infarction with non-ST elevation
  • Nontransmural myocardial infarction NOS

I21.4 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

I21.4Akut subendokardiell infarkt

  • I21.4AAkut subendokardiell infarkt i framvägg
  • I21.4BAkut subendokardiell infarkt, diafragmal
  • I21.4WAkut subendokardiell infarkt med annan lokalisation
  • I21.4XAkut subendokardiell infarkt med ospecificerad lokalisation
NorwayICD-10-NO

I21.4Akutt subendokardialt infarkt

  • I21.41Akutt subendokardialt hjerteinfarkt type 1
  • I21.42Akutt subendokardialt hjerteinfarkt type 2
  • I21.43Akutt subendokardialt hjerteinfarkt type 3
  • I21.45Akutt subendokardialt hjerteinfarkt type 5
  • I21.4AAkutt subendokardialt hjerteinfarkt type 4a
  • I21.4BAkutt subendokardialt hjerteinfarkt type 4b
DenmarkICD-10-DK

DI214Non-ST-elevations akut myokardieinfarkt

FinlandICD-10-FI

I21.4Sydäninfarkti ilman ST-nousua (NSTEMI)

  • I21.40Sydäninfarkti ilman ST-nousua, ei osoitettavaa sepelvaltimon ahtaumaa
  • I21.41Sydäninfarkti ilman ST-nousua, ahtautunut sepelvaltimo
  • I21.42Sydäninfarkti ilman ST-nousua, sepelvaltimon trombi
  • I21.43Sydäninfarkti ilman ST-nousua, sepelvaltimon embolus
  • I21.48Sydäninfarkti ilman ST-nousua, sepelvaltimon muu tukos
  • I21.49Sydäninfarkti ilman ST-nousua, määrittämätön sepelvaltimotilanne
GermanyICD-10-GM

I21.4Akuter subendokardialer Myokardinfarkt

  • I21.40Akuter subendokardialer Myokardinfarkt, Typ-1-Infarkt
  • I21.41Akuter subendokardialer Myokardinfarkt, Typ-2-Infarkt
  • I21.48Sonstiger und nicht näher bezeichneter akuter subendokardialer Myokardinfarkt
FranceICD-10-FR

I21.4Infarctus sousendocardique aigu du myocarde

NetherlandsICD-10-NL

I21.4acuut subendocardiaal-myocardinfarct

United StatesICD-10-CM

I21.4Non-ST elevation (NSTEMI) myocardial infarction

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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