I21.29
ST elevation (STEMI) myocardial infarction involving other sites
- Release
- FY 2027
- Effective
Hierarchy
Where I21.29 sits in the official hierarchy. Each level is the code it is classified under.
- I21 Acute myocardial infarction
- I21.2 Parent ST elevation (STEMI) myocardial infarction of other sites
- I21.29 This code ST elevation (STEMI) myocardial infarction involving other sites
Official Coding Notes
Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.
Includes
infarction of heart, myocardium, or ventricle
Inherited from I21 — Acute myocardial infarction
Includes
myocardial infarction specified as acute or with a stated duration of 4 weeks (28 days) or less from onset
Inherited from I21 — Acute myocardial infarction
Inclusion Terms
Acute transmural myocardial infarction of other sites
Inclusion Terms
Apical-lateral transmural (Q wave) infarction (acute)
Inclusion Terms
Basal-lateral transmural (Q wave) infarction (acute)
Inclusion Terms
High lateral transmural (Q wave) infarction (acute)
Inclusion Terms
Lateral (wall) NOS transmural (Q wave) infarction (acute)
Inclusion Terms
Posterior (true) transmural (Q wave) infarction (acute)
Inclusion Terms
Posterobasal transmural (Q wave) infarction (acute)
Inclusion Terms
Posterolateral transmural (Q wave) infarction (acute)
Inclusion Terms
Posteroseptal transmural (Q wave) infarction (acute)
Inclusion Terms
Septal transmural (Q wave) infarction (acute) NOS
Use Additional Code
code, if applicable, to identify:
Inherited from I21 — Acute myocardial infarction
Use Additional Code
exposure to environmental tobacco smoke ( Z77.22 )
Inherited from I21 — Acute myocardial infarction
Use Additional Code
history of tobacco dependence ( Z87.891 )
Inherited from I21 — Acute myocardial infarction
Use Additional Code
occupational exposure to environmental tobacco smoke ( Z57.31 )
Inherited from I21 — Acute myocardial infarction
Version History
How I21.29 appears in each release imported from the official files, newest first.
-
FY 2027 Effective
CurrentST elevation (STEMI) myocardial infarction involving other sites
-
FY 2026 Effective
UnchangedST elevation (STEMI) myocardial infarction involving other sites
Related Codes
Data Source
Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.
- Release
- FY 2027
- Effective
- Source file
- icd10cm-code-descriptions-2027.zip
Official ICD-10-CM source files (opens in a new tab)
MedCodeSearch is an independent reference service and is not affiliated with CMS, CDC, or the U.S. government.
Look up another code
Search ICD-10-CM, ICD-10-PCS and HCPCS Level II by code or description.