Medicare WISeR service

Phrenic Nerve Stimulator

WISeR initially focuses on initial implantation and separates hypoventilation or ventilatory insufficiency from central sleep apnea.

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.

Hypoventilation or ventilatory insufficiency

  • Etiology and management documentation
  • Intact phrenic nerve and diaphragmatic function
  • Absence of severe primary pulmonary disease

Central sleep apnea

  • Central sleep apnea etiology documentation
  • Polysomnography confirmation of moderate-to-severe central sleep apnea
  • Failure of positive-airway-pressure or oxygen therapies
  • Heart failure documentation, when applicable
  • Device interaction testing plan, when applicable
  • Absence of contraindications

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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.