ICD-10 Code G93.1 – Anoxic brain damage, not elsewhere classified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G93.1 – Anoxic brain damage, not elsewhere classified
What it is
G93.1 identifies brain injury caused by lack of oxygen, resulting in anoxic damage. Use it when the record documents anoxic brain damage that is not classified elsewhere.
Clinical signs
Clinical features vary; refer to documentation. Commonly documented findings include altered consciousness, cognitive impairment, motor deficits, or persistent neurologic dysfunction after a hypoxic event.
When to use this code
Use this code when the provider specifically diagnoses anoxic brain damage and does not assign a more specific cause or category. It may apply after cardiac arrest, respiratory failure, or another documented oxygen-deprivation event if the chart supports brain injury. Check documentation for cause and timing.
Do not use for
Do not use it for transient hypoxia without documented brain injury, or for other specified encephalopathies when a more precise code is available. Check documentation if the record only states altered mental status.
Coding tip
Code the underlying cause separately when documented, and confirm the provider links the neurologic injury to an anoxic event.