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I21.A1
Billable

Myocardial infarction type 2

Chapter 9: Diseases of the circulatory system

Inclusion Terms

2 items
  • Myocardial infarction due to demand ischemia
  • Myocardial infarction secondary to ischemic imbalance

Code First

5 items
  • , if applicable, the underlying cause, such as:
  • anemia (D50.0-D64.9)
  • chronic obstructive pulmonary disease (J44.-)
  • paroxysmal tachycardia (I47.0-I47.9)
  • shock (R57.0-R57.9)

Billable Code

I21.A1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

Referenced in Diagnoses

Conditions that use this ICD-10 code in their documentation

View documentation for acute myocardial infarction
acute myocardial infarction
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Acute Myocardial Infarction

View documentation for acute myocardial injury
acute myocardial injury
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Acute Myocardial Injury

View documentation for cardiac ischemia
cardiac ischemia
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Ischemic Heart Disease

View documentation for myocardial ischemia
myocardial ischemia
View Templates

Myocardial Ischemia

View documentation for non street elevation myocardial infarction
non street elevation myocardial infarction
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Non-ST Elevation Myocardial Infarction

View documentation for nstemi type 2
nstemi type 2
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Type 2 Myocardial Infarction

View documentation for type 2 myocardial infarction
type 2 myocardial infarction
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Myocardial Infarction Type 2

View documentation for type 2 nstemi
type 2 nstemi
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Myocardial Infarction Type 2

Additional Information from Parent Codes

The following information may apply to this code from its parent codes in the ICD-10 hierarchy. This information is important for proper coding and classification.

Includes

7 items

From I21:

  • cardiac infarction
  • coronary (artery) embolism
  • coronary (artery) occlusion
  • coronary (artery) rupture
  • coronary (artery) thrombosis
  • infarction of heart, myocardium, or ventricle
  • myocardial infarction specified as acute or with a stated duration of 4 weeks (28 days) or less from onset

Excludes2

13 items

From I00-I99:

  • 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.-)

From I21:

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

Use Additional Code

7 items

From I21:

  • 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)
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