I16.1
Hypertensive emergency
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 13 never code together
I10-I1Ablock
I00-I99chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
- systemic connective tissue disorders (M30-M36)M30-M36
- transient cerebral ischemic attacks and related syndromes (G45.-)G45.-
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 17
I16.1code
Use additional code
- code, if applicable, to identify specific organ dysfunction, such as:
- acute kidney injury (N17.-)N17.-N17.-
- acute myocardial infarction (I21.-)I21.-I21.-
- acute pulmonary edema (left and/or right ventricular failure) (J81.0, I50.-)J81.0J81.0I50.-I50.-
- aortic dissection (I71.0-)I71.0-I71.0-
- cerebral hemorrhage (I60.-. I61.-, I62.-)I60.-I60.-I61.-I61.-I62.-I62.-
- cerebral infarction (I63.-)I63.-I63.-
- eclampsia (O15.-)O15.-O15.-
- hypertensive encephalopathy (I67.4)I67.4I67.4
- seizure (R56.9)R56.9R56.9
Index entries leading here 1
Alongside this code 2 same parent — I16
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.