ICD-10 Code I67.848 – Other cerebrovascular vasospasm and vasoconstriction (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I67.848 – Other cerebrovascular vasospasm and vasoconstriction
What it is
This code describes abnormal narrowing or spasm of blood vessels in the brain that is not classified elsewhere. Use it when documentation specifies other cerebrovascular vasospasm or vasoconstriction.
Clinical signs
Clinical features vary; refer to documentation. Patients may have neurologic symptoms related to reduced cerebral blood flow, and imaging or specialist assessment may note vessel narrowing or spasm.
When to use this code
Use this code when the provider documents cerebrovascular vasospasm or vasoconstriction and no more specific ICD-10-CM code applies. It may fit cases described as “other” or unspecified by location within the cerebral circulation. Check the record for associated conditions or a more precise diagnosis before assigning I67.848.
Do not use for
Do not use this code for vasospasm in noncerebral vessels or for a more specific cerebrovascular diagnosis already documented. If the chart does not clearly support vasospasm or vasoconstriction, check documentation.
Coding tip
Assign the code only when the provider clearly links the narrowing or spasm to the cerebral vessels.