G90.09

What This Code Means

This code describes a condition where the nerves that control automatic body functions (like heart rate, blood pressure, and digestion) are damaged for unknown reasons, affecting the peripheral nervous system. The cause cannot be identified despite medical investigation.

Coding Tips

• •Verify that the autonomic neuropathy is idiopathic (no identifiable cause) before assigning this code; if a secondary cause is documented (diabetes, infection, medication), use a more specific code
• •This is a subcategory of G90.0, so ensure documentation specifies 'other' idiopathic peripheral autonomic neuropathy rather than other specified types like pure autonomic failure or postural orthostatic tachycardia syndrome