ICD-10 Code G31.2 – Degeneration of nervous system due to alcohol (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G31.2 – Degeneration of nervous system due to alcohol
What it is
G31.2 identifies degeneration of the nervous system caused by alcohol use. Use it when documentation links chronic alcohol exposure to a degenerative neurologic disorder.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings may include progressive neurologic decline, gait or coordination problems, cognitive changes, or other alcohol-related nervous system impairment.
When to use this code
Use this code when the provider documents a degenerative nervous system condition due to alcohol, rather than a nonspecific alcohol use disorder. It may support cases where chronic alcohol exposure is stated as the cause of neurologic degeneration. Check documentation for the exact neurologic diagnosis and causal wording.
Do not use for
Do not use it for uncomplicated alcohol intoxication, withdrawal, or alcohol dependence alone. If the neurologic disorder is not documented as alcohol-related, code the confirmed condition instead.
Coding tip
Verify the chart explicitly connects the nervous system degeneration to alcohol before assigning G31.2.