ICD-10 Code G93.8 – Other specified disorders of brain (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G93.8 – Other specified disorders of brain
What it is
G93.8 is used for a brain disorder that is named in the record but does not fit a more specific ICD-10 code. It captures other defined brain conditions that are not classified elsewhere.
Clinical signs
Clinical features vary; refer to documentation. Records may note focal neurologic deficits, altered mental status, seizures, or other brain-related findings, depending on the underlying condition.
When to use this code
Use this code when the provider documents a specific disorder of the brain and no more precise category is available. It may fit unusual, residual, or otherwise specified brain conditions. You should code the documented diagnosis rather than the symptom alone.
Do not use for
Do not use G93.8 when a more specific brain disorder code is available. Avoid it for nonspecific symptoms or when the chart does not clearly identify a brain disorder; check documentation.
Coding tip
Review the provider’s exact wording first, then confirm whether a more specific G93 code applies before assigning G93.8.