ICD-10-CM 2027
ICD-10 code for hypertensive encephalopathy
From the official ICD-10-CM alphabetic index entry “Encephalopathy (acute) › hypertensive”. Page updated September 29, 2026.
About coding hypertensive encephalopathy
The ICD-10-CM code for hypertensive encephalopathy is I67.4 (Hypertensive encephalopathy).
Within I67 (other cerebrovascular diseases), I67.4 is specifically for hypertensive encephalopathy. Related codes cover dissection of cerebral arteries, nonruptured (I67.0), cerebral aneurysm, nonruptured (I67.1), cerebral atherosclerosis (I67.2), progressive vascular leukoencephalopathy (I67.3), Moyamoya disease (I67.5), nonpyogenic thrombosis of intracranial venous system (I67.6), cerebral arteritis, not elsewhere classified (I67.7), other specified cerebrovascular diseases (I67.8) and 1 more.
The conditions in its Excludes2 note aren't part of I67.4, but may be coded alongside it if the patient has both: insufficiency, NOS, of precerebral arteries (G45.2).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
Common questions about hypertensive encephalopathy ICD-10 codes
What is the ICD-10 code for hypertensive encephalopathy?
- I67.4 — Hypertensive encephalopathy.
Is I67.4 billable?
- Yes. I67.4 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I67.4 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I67.4 as a principal diagnosis.
Is I67.4 a CC or MCC?
- I67.4 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.