I15 — Secondary hypertension
Is I15 billable?
No — I15 is a non-billable header code. I15 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 5 billable codes beneath I15.
I15 at a glance
| Code | I15 |
|---|---|
| Description | Secondary hypertension |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with I15 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- postprocedural hypertension (I97.3)
Excludes2 — not included here
The conditions below are not part of I15, but a patient may have both at the same time. When documentation supports it, I15 and the excluded code may both be reported.
Code also
Two codes may be needed to describe the condition fully. Whether I15 is sequenced first depends on the reason for the encounter.
- underlying condition
Excludes1 — never code together — inherited from I10-I1A
The conditions below can never be reported together with I15 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Use additional code — inherited from I10-I1A
Report an additional code alongside I15 to fully describe the condition. I15 is sequenced first.
Excludes2 — not included here — inherited from Chapter 9
The conditions below are not part of I15, but a patient may have both at the same time. When documentation supports it, I15 and the excluded code may both be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- transient cerebral ischemic attacks and related syndromes (G45.-)
Excludes2 — not included here — inherited from I10-I1A
The conditions below are not part of I15, but a patient may have both at the same time. When documentation supports it, I15 and the excluded code may both be reported.
What codes fall under I15? (5)
How long has I15 existed?
I15 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with I15?
ICD-10-CM declares these codes mutually exclusive with I15 — exactly one of each pair can be correct for a given encounter.