DMEPOS Prior Authorization Rules and Requirements

What Is DMEPOS Prior Authorization

DMEPOS (Durable Medical Equipment, Prosthetics, Orthotics, and Supplies) Prior Authorization is CMS's requirement that suppliers obtain approval before delivering certain high-cost items to Medicare beneficiaries. CMS maintains a Master List of items requiring prior authorization, updated annually. Items include power mobility devices, specific orthotics, and prosthetics. Suppliers must submit clinical documentation supporting medical necessity, and CMS must provide provisional affirmation within 10 business days. Non-affirmed items result in CO-197 denials.

Who It Affects

DMEPOS suppliers, durable medical equipment companies, prosthetics and orthotics providers, and wheelchair vendors must comply with prior authorization requirements. Medicare beneficiaries depend on timely authorization to access necessary equipment. Physicians and suppliers must coordinate to ensure complete documentation. Health plans managing Medicare plans must monitor and enforce authorization requirements. Administrative staff managing DMEPOS inventory must understand approval timelines.

Key Requirements

  1. Identify all items on the current CMS DMEPOS Prior Auth Master List
  2. Submit authorization request before delivery of the item to the patient
  3. Include complete medical documentation supporting medical necessity
  4. Submit prescription or order from treating physician with specific codes
  5. Provide beneficiary demographic information and diagnosis codes
  6. Receive provisional affirmation within 10 business days of request submission
  7. Deliver item only after receiving authorization approval
  8. Resubmit if authorization is not affirmed and claim support is insufficient

Timeline and Enforcement

CMS requires provisional affirmation within 10 business days of receiving a complete authorization request. The Master List is updated annually and published by October 1 for the following year. Suppliers delivering items without required authorization may be denied payment, resulting in CO-197 denials. Repeated unauthorized deliveries trigger Recovery Auditor investigations and potential program exclusion. State agencies monitor DMEPOS compliance and may impose additional supplier requirements.

How to Comply

  1. Download and maintain current CMS DMEPOS Prior Auth Master List
  2. Train staff to identify items requiring authorization at point of referral
  3. Establish workflow to request authorization before item fabrication or delivery
  4. Partner with physician practices to ensure timely prescription documentation
  5. Submit complete authorization requests through authorized Medicare contractor
  6. Track authorization response dates and affirmed item status
  7. Respond to information requests from CMS within required timeframes
  8. Maintain audit trail of all authorizations and denials

Frequently Asked Questions

What happens when CMS does not affirm authorization?

If CMS does not affirm within 10 business days, the supplier may request an expedited review or resubmit with additional medical documentation. If authorization is ultimately denied, claims for that item will be denied with a CO-197 code.

Can a supplier appeal a non-affirmed authorization?

Yes. Suppliers can appeal non-affirmation by submitting additional medical documentation or requesting expedited review. Appeal rights exist at multiple levels, including reconsideration and appeals council review.

Are all DMEPOS items subject to prior authorization?

No. Only items on the CMS Master List require prior authorization. The list focuses on high-cost, high-variance items like power mobility. Standard DMEPOS items can be billed without prior authorization.

Related Resources

Prior Authorization Rules | CO-197 Not Authorized | CO-50 Service Denied

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This content is provided for informational purposes only and does not constitute legal or compliance advice. Consult with your compliance team regarding specific DMEPOS prior authorization requirements. Altair by S7 Lab is not responsible for changes in CMS requirements or their interpretation.