ICD-10 Code I67.4 – Hypertensive encephalopathy (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I67.4 – Hypertensive encephalopathy
What it is
Hypertensive encephalopathy is brain dysfunction caused by a severe rise in blood pressure. It reflects acute neurologic injury from uncontrolled hypertension and requires careful documentation of the condition.
Clinical signs
Clinical features vary; refer to documentation. Common findings include headache, confusion, altered mental status, visual disturbance, seizures, or decreased level of consciousness in the setting of marked hypertension.
When to use this code
Use I67.4 when the provider documents hypertensive encephalopathy as the diagnosis. It is appropriate when neurologic symptoms are attributed to hypertension and the record supports an acute encephalopathic process. If the note is unclear, check documentation before coding.
Do not use for
Do not use this code for uncomplicated hypertension or for nonspecific dizziness, headache, or confusion without documented hypertensive encephalopathy. If another neurologic cause is identified, code that condition instead.
Coding tip
Code I67.4 only when the provider clearly links the encephalopathy to hypertension.