Unspecified disorder of autonomic nervous system

This code represents a general diagnosis for conditions affecting the autonomic nervous system (ANS) when the specific type or cause of the disorder is not documented. It encompasses a broad range of symptoms related to involuntary bodily functions, such as heart rate, digestion, respiration, and blood pressure regulation, without a more precise etiology.

Use this code when documentation indicates an autonomic nervous system dysfunction, but the physician has not specified the exact nature (e.g., dysautonomia, autonomic neuropathy) or underlying cause. This is typically a temporary code used when further diagnostic workup is pending or when the specific disorder cannot be definitively identified.

• Avoid using this code if a more specific autonomic disorder (e.g., familial dysautonomia, multiple system atrophy) is documented.
• Query the provider for clarification if symptoms suggest a specific autonomic neuropathy or dysautonomia.
• This code should generally be a last resort when no other specific autonomic nervous system disorder code is appropriate.