Neurology and Neurosurgery / Autonomic function tests

Why This Topic Matters

Autonomic testing is often used in neurologic evaluation, and accurate understanding of the code structure and the surrounding billing context helps support correct reporting and claims review. The article also highlights why these services may draw payer scrutiny and why documentation matters.

Article Sections

1. Autonomic nervous system function testing overview

   Introduces the overall purpose of autonomic function testing and the types of physiologic assessment included in the article. It also describes the general testing workflow and visit length.

2. CPT 95921: Cardiovagal innervation

   Covers one category of autonomic testing focused on parasympathetic assessment and the general approaches used within that category. The section also notes related coding and documentation context.

3. CPT 95922: Vasomotor adrenergic innervation

   Discusses the adrenergic testing category and the broad methods associated with it. It also includes related references to tilt-based assessment and billing context.

4. CPT 95923: Sudomotor function tests

   Reviews the sudomotor testing category and the major test types grouped under it. The section also touches on sweat-related physiologic evaluation and related autonomic assessment topics.

5. Reporting and reimbursement considerations

   Summarizes general reporting limitations, same-day code use, repeat-testing considerations, and payer coverage concerns. It focuses on administrative context rather than clinical detail.