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.
Official description
I15Secondary hypertension
ICD-10-CM diagnosis code · United States clinical modification
Where I15 sits
- 1
Chapter 9
Diseases of the circulatory system (I00-I99)
- 2
Section
Hypertensive diseases (I10-I1A)
- 3
Category I15
Secondary hypertension
- 4
Code I15
Secondary hypertension
Codes under I15
I15 is a non-billable category. Choose the child code that best matches the documented diagnosis.
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-)
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.
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-).