U.S. ICD-10-CM · FY 2027

I1A ICD-10-CM Code: Other hypertension

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

I1A

Other hypertension

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where I1A sits

  1. 1

    Chapter 9

    Diseases of the circulatory system (I00-I99)

  2. 2

    Section

    Hypertensive diseases (I10-I1A)

  3. 3

    Category I1A

    Other hypertension

  4. 4

    Code I1A

    Other hypertension

More specific choices

Codes under I1A

I1A is a non-billable category. Choose the child code that best matches the documented diagnosis.

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for I1A.

Code first

No “code first” instruction is listed for I1A.

Use additional code

No “use additional code” instruction is listed for I1A.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for I1A.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for I1A.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code I1A mean?

I1A is the FY 2027 U.S. ICD-10-CM code for “Other hypertension.”

Is I1A a billable or specific ICD-10-CM code?

No. I1A has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is I1A located in ICD-10-CM?

I1A is listed in Chapter 9, Diseases of the circulatory system (I00-I99), within Hypertensive diseases (I10-I1A) (I10–I1A), under category I1A, Other hypertension.

What coding notes are listed for I1A?

No inclusion terms are listed for I1A in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

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