Medicare prior authorization · 64568

64568Vagus Nerve Stimulation

Subject to WISeR prior authorization or pre-payment review in AZ, NJ, OH, OK, TX, WA for dates of service 2026-01-15 through 2031-12-31, in hospital outpatient, ambulatory surgical center, office and home settings. The decision is made on Medicare’s existing coverage policy; nothing in these programs changes what is covered.

WISeR

Decision
3 days; 2 days expedited; unlimited resubmissions
If no request is made
the claim goes to pre-payment medical review
Policies CMS cites (Appendix A)
NCD 160.18
Participant by state
AZ: Zyter · NJ: Genzeon · OH: Innovaccer · OK: Humata Health · TX: Cohere Health · WA: Virtix Health
Exemption
NPI-level, after ≥10 requests and the participant’s affirmation-rate threshold in an assessment period; granted quarterly from July 2026; held at least a year.
CMS note
Only for the indications in Appendix B; 64568 with G47.33 (obstructive sleep apnea) is not WISeR.

What CMS lists for the record

From the WISeR Operational Guide, verbatim. The coverage policy governs; use the check below for the diagnosis and state.

CMS WISeR documentation checklist · §6.2.3

Operational Guide v7.0, last updated July 24, 2026 · retrieved 2026-09-14

Vagus Nerve Stimulation (VNS) (NCD 160.18)

CMS: “To meet coverage criteria, the patient’s medical record must contain documentation that fully supports the medical necessity of services. Subsections 6.2.1 to 6.2.13 list the documentation requirements for example services. For detailed documentation requirements, providers who choose to submit a prior authorization request for a WISeR Select Item or Service should refer to the relevant NCDs and/or their MAC jurisdiction’s LCDs and Local Coverage Articles (LCAs), if available, for guidance. They can be found on the Medicare Coverage Database website.

General documentation requirements for initial implantation10 of vagus nerve stimulation (VNS) for the treatment of medically refractory partial onset seizures are as follows:

  • Documentation of medically refractory partial onset seizures with failure of or intolerance to trial(s) of single or combination antiepileptic therapy
  • Documentation with rationale that the patient is not a candidate for epilepsy surgery, has failed epilepsy surgery, or refuses epilepsy surgery after shared decision-making General documentation requirements for initial implantation11 of VNS for treatment-resistant depression (TRD) through CMS’ Coverage with Evidence Development (CED)12 are as follows:
  • Enrollment in an active CMS-approved trial associated with this NCD/CED
  • Documentation of a major depressive disorder (MDD) episode for at least 2 years or at least four episodes of MDD, including the current episode
  • Documentation of a minimum criterion of four prior failed treatments of adequate dose and duration, as measured by a tool designed for this purpose
  • Documentation of a major depressive episode (MDE) as measured by a guideline- recommended depression scale assessment tool on two visits, within a 45-day span prior to implantation of the VNS device
  • Documentation of a stable medication regimen for at least 4 weeks before device implantation
  • Documentation that none of the following criteria are present: a) Current or lifetime history of psychotic features in any MDE b) Current or lifetime history of schizophrenia or schizoaffective disorder c) Current or lifetime history of any other psychotic disorder d) Current or lifetime history of rapid cycling bipolar disorder e) Current secondary diagnosis of delirium, dementia, amnesia, or other cognitive disorder f) Current suicidal intent g) Treatment with another investigational device or investigational drugs
  1. [9] Prior authorization and pre-payment medical review for Vagus Nerve Stimulation will only be implemented for the indications specified in Appendix B.
  2. [10] WISeR will initially focus on initial implantation of VNS. Revisions and replacements are out of scope of WISeR, but this may be subject to change in the future. As per Section D of NCD 160.18, patients implanted with a VNS device for TRD may receive a VNS device replacement if it is required due to the end of battery life or any other device-related malfunction.
  3. [11] WISeR will initially focus on initial implantation of VNS. Revisions and replacements are out of scope of WISeR, but this may be subject to change in the future. As per Section D of NCD 160.18, patients implanted with a VNS device for TRD may receive a VNS device replacement if it is required due to the end of battery life or any other device-related malfunction.
  4. [12] Centers for Medicare & Medicaid Services. (2024). Vagus nerve stimulation (VNS) for treatment resistant depression (TRD).
Read the guide on CMS →

The coverage policy the reviewer applies, by state

Each state’s Medicare contractor writes its own LCD, so the policy that decides a 64568 request depends on the state. The documentation requirements below are quoted from the policy or its Billing & Coding article as captured; the linked CMS document is authoritative.

All WISeR states (AZ, NJ, OH, OK, TX, WA) · national coverage determination

NCD 160.18 — Vagus Nerve Stimulation (VNS) · CMS version 3 · captured 2026-09-13

Read the documentation requirements in the linked CMS document.

Check 64568 for your state, diagnosis and setting

The governing policy as it stands today, whether the diagnosis is on its list, and the documentation the policy’s own text requires — quoted, source-linked, free.

Run the check →

Full lists: WISeR code list · WISeR rules and exemption

Sources: CMS WISeR Provider and Supplier Operational Guide v7.0 (2026-07-24), Appendix A; CMS list of OPD services requiring prior authorization (2024-08-05); CMS list of ambulatory surgical center services for prior authorization (2026-03-05) and the ASC Operational Guide (2026-03-03). Codes are shown as numbers only, as CMS lists them. CPT® is a registered trademark of the American Medical Association.