Secondary hypertension (I15) ICD-10-CM
The I15 code range covers secondary hypertension with 6 ICD-10-CM diagnosis codes. 5 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Code Also
A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.
- underlying condition
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- postprocedural hypertension I97.3
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Codes in the I15 Range 6 codes · 5 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the I15 range.
Hypertension, Renovascular
Hypertension due to RENAL ARTERY OBSTRUCTION or compression.
Secondary Hypertension
High blood pressure caused by an underlying medical condition.
About the I15 Code Range
Secondary hypertension is high blood pressure caused by an underlying medical condition.
The subdivisions separate causes. I15.0 identifies hypertension related to kidney blood vessels. I15.1 identifies hypertension caused by other kidney disorders, while I15.2 identifies hypertension caused by endocrine, or hormone-related, disorders. I15.8 identifies other secondary hypertension, and I15.9 identifies secondary hypertension without a specified subtype.
Questions About This Page
How many billable codes are in the I15 range?
Of the 6 codes in this range, 5 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the I15 range classify?
The range classifies secondary hypertension. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
