Is I22.1 a billable ICD-10 code?

Yes. I22.1 (Subsequent ST elevation (STEMI) myocardial infarction of inferior wall) is billable and can be used for insurance claims. Always verify payer-specific requirements.

I22.1 ✓ Billable

Subsequent ST elevation (STEMI) myocardial infarction of inferior wall

Q: What is ICD-10 code I22.1?

ICD-10-CM code I22.1 stands for "Subsequent ST elevation (STEMI) myocardial infarction of inferior wall". It is a billable code in the Diseases of the Circulatory System chapter, effective FY2026 (Oct 1, 2025 – Sep 30, 2026).

ICD-10-CM · FY2026 · Diseases of the Circulatory System

Code

I22.1

System

ICD-10-CM

Billable

Yes — valid for submission

Effective

FY2026

Chapter

Diseases of the Circulatory System

Source

CMS / CDC NCHS

⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Frequently asked questions

What is ICD-10 code I22.1?

ICD-10-CM code I22.1 represents Subsequent ST elevation (STEMI) myocardial infarction of inferior wall. It is a billable diagnosis code in the Diseases of the Circulatory System chapter, effective October 1, 2025 – September 30, 2026.

Is I22.1 billable?

Yes. I22.1 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.

What chapter is I22.1 in?

I22.1 belongs to the Diseases of the Circulatory System chapter (I00–I99) of ICD-10-CM.

Related codes in the I22 category

I22 Subsequent ST elevation (STEMI) and non-ST elevation (NSTEMI) myocardial infarction Non-billable I22.0 Subsequent ST elevation (STEMI) myocardial infarction of anterior wall Billable I22.2 Subsequent non-ST elevation (NSTEMI) myocardial infarction Billable I22.8 Subsequent ST elevation (STEMI) myocardial infarction of other sites Billable I22.9 Subsequent ST elevation (STEMI) myocardial infarction of unspecified site Billable

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