AutoICD API

I21.11

Billable

STEMI involving right coronary artery

ST elevation (STEMI) myocardial infarction involving right coronary artery

Status

Billable / Specific

Block

I20-I25

Parent Code

I21.1

Coding Notes

Inclusion Terms

Alternative clinical terms for this condition

  • Inferoposterior transmural (Q wave) infarction (acute)

Includes

Conditions included under this code

  • 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

Excludes 2

Conditions not included here, but the patient may have both

Use Additional Code

Additional codes that should follow this code

Code Also

A second code may be required; sequencing depends on circumstances

Related Codes(1)
I21.19

STEMI involving oth coronary artery of inferior wall

Billable
Also Known As / Clinical Terms(36)

SNOMED CT

UMLS

Clinical Terms

  • Acute ST segment elevation myocardial infarction due to occlusion of marginal branch of right coronary artery
  • Inferoposterior transmural (Q wave) infarction (acute)
  • Acute ST segment elevation myocardial infarction due to occlusion of proximal portion of right coronary artery
  • Acute ST segment elevation myocardial infarction due to occlusion of posterior descending branch of right coronary artery
  • Acute STEMI (ST elevation myocardial infarction) due to RCA (right coronary artery) occlusion
  • Acute ST segment elevation myocardial infarction due to right coronary artery occlusion
  • Acute STEMI (ST elevation myocardial infarction) due to distal RCA (right coronary artery) occlusion
  • Acute ST segment elevation myocardial infarction due to occlusion of posterior lateral branch of right coronary artery
  • Acute myocardial infarction due to right coronary artery occlusion
  • Acute ST segment elevation myocardial infarction due to occlusion of mid portion of right coronary artery
  • Acute ST segment elevation myocardial infarction due to occlusion of distal portion of right coronary artery
  • Acute ST segment elevation MI (myocardial infarction) due to right coronary artery occlusion
  • Acute STEMI (ST elevation myocardial infarction) due to PL (posterolateral) branch of RCA (right coronary artery) occlusion
  • Acute STEMI (ST elevation myocardial infarction) due to proximal RCA (right coronary artery) occlusion
  • Acute STEMI (ST elevation myocardial infarction) due to AM (acute marginal) branch of RCA (right coronary artery) occlusion
  • Acute STEMI (ST elevation myocardial infarction) due to mid RCA (right coronary artery) occlusion
  • Acute STEMI (ST elevation myocardial infarction) due to PDA (posterior descending artery) branch of RCA (right coronary artery) occlusion
Frequently Asked Questions
What is the ICD-10 code for stemi involving right coronary artery?

The ICD-10-CM code for stemi involving right coronary artery is I21.11. The full clinical description is "ST elevation (STEMI) myocardial infarction involving right coronary artery". I21.11 is a billable/specific code that can be used on insurance claims and medical billing.

What does ICD-10 code I21.11 mean?

ICD-10-CM code I21.11 represents “ST elevation (STEMI) myocardial infarction involving right coronary artery”. It is classified under Chapter 9: Diseases of the Circulatory System and is a billable/specific code that can be used on a claim.

Is I21.11 a billable code?

Yes, I21.11 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.

What chapter is I21.11 in?

I21.11 is in Chapter 9: Diseases of the Circulatory System (codes I00-I99).

Are additional codes required with I21.11?

Yes, when using I21.11, also report: 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).

What SNOMED CT codes does I21.11 map to?

I21.11 maps to 8 SNOMED CT concepts: 15713121000119105, 868217004, 868224003, 868220007, 868225002, and 3 more. SNOMED CT is a clinical terminology used in electronic health records.

What are the UMLS CUIs for I21.11?

I21.11 is linked to 2 UMLS Concept Unique Identifiers: C2882100, C2882101. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

How does I21.11 relate to ICF functioning codes?

ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like stemi involving right coronary artery affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.

What is the ICD-11 equivalent of I21.11?

There is no direct ICD-11 mapping available for I21.11 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.

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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.