I15
Header — not billableSecondary hypertension
The ICD-10 code for secondary hypertension is I15.
I15 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 5 more specific codes below.
Clinical notes
Code also
Two codes may be needed to fully describe a condition, but unlike Code First/Use Additional Code, the sequencing order is not mandated by convention.
- underlying condition
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
- postprocedural hypertension (I97.3)
Excludes2 (not included here)
An Excludes2 note means the excluded condition is not part of this one, but a patient can have both at the same time — in that case both codes may be reported together.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- I10Essential (primary) hypertension
- I11Hypertensive heart diseasenon-billable header
- I12Hypertensive chronic kidney diseasenon-billable header
- I13Hypertensive heart and chronic kidney diseasenon-billable header
- I16Hypertensive crisisnon-billable header
- I1AOther hypertensionnon-billable header
- I15Secondary hypertensionnon-billable header