I16 — Hypertensive crisis
Is I16 billable?
No — I16 is a non-billable header code. I16 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 3 billable codes beneath I16.
Billable codes under this header
I16 at a glance
| Code | I16 |
|---|---|
| Description | Hypertensive crisis |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Code also
Two codes may be needed to describe the condition fully. Whether I16 is sequenced first depends on the reason for the encounter.
Excludes1 — never code together — inherited from I10-I1A
The conditions below can never be reported together with I16 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 I16 to fully describe the condition. I16 is sequenced first.
Excludes2 — not included here — inherited from Chapter 9
The conditions below are not part of I16, but a patient may have both at the same time. When documentation supports it, I16 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 I16, but a patient may have both at the same time. When documentation supports it, I16 and the excluded code may both be reported.
What codes fall under I16? (3)
How long has I16 existed?
I16 first appears in FY2018 (FY2017 is not available, so it may have appeared then).
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.