U.S. ICD-10-CM · FY 2027

I15 ICD-10-CM Code: Secondary 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

I15

Secondary hypertension

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

Classification

Where I15 sits

  1. 1

    Chapter 9

    Diseases of the circulatory system (I00-I99)

  2. 2

    Section

    Hypertensive diseases (I10-I1A)

  3. 3

    Category I15

    Secondary hypertension

  4. 4

    Code I15

    Secondary hypertension

More specific choices

Codes under I15

I15 is a non-billable category. Choose the child code that best matches the documented diagnosis.

I15.0

Renovascular hypertension

I15.1

Hypertension secondary to other renal disorders

I15.2

Hypertension secondary to endocrine disorders

I15.8

Other secondary hypertension

I15.9

Secondary hypertension, unspecified

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for I15.

Code first

No “code first” instruction is listed for I15.

Use additional code

No “use additional code” instruction is listed for I15.

Excludes1

Conditions that should not be reported together with this code.

  • postprocedural hypertension (I97.3)

Excludes2

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

  • secondary hypertension involving vessels of brain (I60-I69)
  • secondary hypertension involving vessels of eye (H35.0-)

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

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 I15 mean?

I15 is the FY 2027 U.S. ICD-10-CM code for “Secondary hypertension.”

Is I15 a billable or specific ICD-10-CM code?

No. I15 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 I15 located in ICD-10-CM?

I15 is listed in Chapter 9, Diseases of the circulatory system (I00-I99), within Hypertensive diseases (I10-I1A) (I10–I1A), under category I15, Secondary hypertension.

What coding notes are listed for I15?

No inclusion terms are listed for I15 in this reference record. No code-first instruction is listed. Excludes1 notes: postprocedural hypertension (I97.3). Excludes2 notes: secondary hypertension involving vessels of brain (I60-I69); secondary hypertension involving vessels of eye (H35.0-).

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