Medicare WISeR service

Vagus Nerve Stimulation (VNS)

WISeR initially focuses on initial implantation. Revisions and replacements are outside the current scope.

Documentation overview

Documentation categories to review

These categories summarize the approved criteria bundle. The note checker uses the selected state, clinical pathway and procedure details to apply the relevant criteria.

Medically refractory partial-onset seizures

  • Documentation of medically refractory partial-onset seizures
  • Epilepsy surgery candidacy assessment

Treatment-resistant depression through coverage with evidence development

  • Enrollment in a CMS-approved coverage-with-evidence-development trial
  • Major depressive disorder episode duration or recurrence
  • Four or more prior failed adequate treatments
  • Depression severity confirmed by a validated scale
  • Stable medication regimen
  • Absence of exclusionary psychiatric conditions

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Educational use only

This page summarizes public CMS documentation criteria. It does not provide medical, legal or coding advice, determine Medicare coverage, predict prior-authorization outcomes, or replace clinical judgment. Coverage decisions are made by CMS and its contractors. Verify the effective policy for the patient’s date and place of service before relying on this summary.