CPT 95923: Autonomic Sudomotor Function Testing
CPT 95923 covers sudomotor autonomic function testing. Coverage policy, documentation requirements and typical denial reasons.
Billing 95923 Correctly
CPT 95923 covers sudomotor autonomic function testing. Coverage policy, documentation requirements and typical denial reasons.
- The record must state the clinical indication, the test performed, the results obtained and the physician interpretation.
- Screening without a supporting indication is not covered.
Source: AMA CPT and CMS billing guidance, verified 2026-09-11
95923 in Detail
CPT 95923 reports sudomotor autonomic function testing. Coverage for autonomic testing is defined by payer policy rather than assumed, and the accepted indications are specific.
The practical consequence is that the clinical indication needs to be documented before the test is performed, not reconstructed at billing. Where coverage is uncertain, the liability question should be settled in advance. It is billed inside neurology billing, listed in the CPT code library, and where no listed code fits the claim moves to 95999.
Using 95923 Correctly
Documentation Requirements
Ensure clinical notes clearly support the level of service, procedure performed, and medical necessity for this CPT code.
Modifier Requirements
Determine whether any modifiers are required for this code, particularly in bilateral, assistant surgeon, or multiple procedure scenarios.
Payer-Specific Rules
Check payer fee schedules and coverage policies, as reimbursement and coverage rules for this code vary by payer.
Bundling Considerations
Review NCCI edits to confirm this code is not bundled with other procedures billed on the same date of service.
95923 Reference
| Field | Details |
|---|---|
| CPT Code | 95923 |
| Official Descriptor | Sudomotor function testing. |
| What It Covers | Testing of sudomotor autonomic function, part of the autonomic function testing family. |
| Coverage Policy | Autonomic function testing is governed by payer coverage policy and Medicare billing and coding articles that set out accepted indications. Coverage is not universal and varies by carrier. |
| Documentation | The record must state the clinical indication, the test performed, the results obtained and the physician interpretation. Screening without a supporting indication is not covered. |
| Equipment and Setting | Payers may specify acceptable testing methodology. Confirm the method used is one the carrier recognises before performing the study. |
| Common Denial Cause | Testing performed without a covered indication documented, or a methodology the payer does not accept. |
Source: AMA CPT and CMS billing guidance, verified 2026-09-11
Related Billing Resources
95923, Frequently Asked Questions
Testing of sudomotor autonomic function, part of the autonomic function testing family.
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