ICD-10 Code G93.49 – Other encephalopathy (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G93.49 – Other encephalopathy
What it is
G93.49 identifies encephalopathy that is documented but does not fit a more specific category. Use it for generalized brain dysfunction when the cause or type is not further defined in the record.
Clinical signs
Clinical features vary; refer to documentation. Commonly, encephalopathy may present with altered mental status, confusion, reduced awareness, or cognitive change, but the specific findings must be supported in the chart.
When to use this code
Use this code when the provider documents encephalopathy and no more specific ICD-10-CM option is supported by the note. It is appropriate when the record describes brain dysfunction but does not identify a clearer subtype or cause. Check documentation if the condition is tied to another diagnosed illness.
Do not use for
Do not use G93.49 when the documentation supports a more specific encephalopathy code or another primary neurologic diagnosis. Do not assign it for transient confusion alone unless the provider documents encephalopathy.
Coding tip
Code the most specific encephalopathy documented, and query the provider if the note only says “altered mental status” or another nonspecific term.