ICDcodes.org
FY2027

I21.2 — ST elevation (STEMI) myocardial infarction of other sites

Not billable

Is I21.2 billable?

No — I21.2 is a non-billable header code. I21.2 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 2 billable codes beneath I21.2.

I21.2 at a glance

CodeI21.2
DescriptionST elevation (STEMI) myocardial infarction of other sites
BillableNo — header code
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Inclusion terms

Alternative wording in documentation that is classified to I21.2.

  • Type 1 ST elevation myocardial infarction of other sites

Use additional code — inherited from I21

Report an additional code alongside I21.2 to fully describe the condition. I21.2 is sequenced first.

  • code, if applicable, to identify:
  • exposure to environmental tobacco smoke (Z77.22)
  • history of tobacco dependence (Z87.891)
  • occupational exposure to environmental tobacco smoke (Z57.31)
  • status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility (Z92.82)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)

Excludes2 — not included here — inherited from Chapter 9

The conditions below are not part of I21.2, but a patient may have both at the same time. When documentation supports it, I21.2 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.-)

Excludes2 — not included here — inherited from I21

The conditions below are not part of I21.2, but a patient may have both at the same time. When documentation supports it, I21.2 and the excluded code may both be reported.

  • old myocardial infarction (I25.2)
  • postmyocardial infarction syndrome (I24.1)
  • subsequent type 1 myocardial infarction (I22.-)

Code also — inherited from I20-I25

Two codes may be needed to describe the condition fully. Whether I21.2 is sequenced first depends on the reason for the encounter.

  • the presence of hypertension (I10-I1A)

What codes fall under I21.2? (2)

How long has I21.2 existed?

I21.2 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

What other codes are in the I21 family? (7)