Medicare may cover a custom mandibular advancement oral appliance for obstructive sleep apnea when the equipment policy's requirements are met. This is different from an ordinary night guard, an over-the-counter snoring device or routine dental treatment.

What the coverage review requires
| Step | What must be established |
|---|---|
| Clinical evaluation | The treating practitioner evaluates you before testing. |
| Sleep test | A Medicare-covered study meets the qualifying criteria. |
| Order | The practitioner reviews the report and orders the device. |
| Supply and billing | A licensed dentist provides and bills the custom appliance. |
The policy considers the measured breathing-event rate and, in certain ranges, documented symptoms or related conditions. For a rate above 30 events per hour, the additional rule concerns inability to tolerate positive airway pressure or a determination that it is contraindicated.
The practice should apply the full policy to the actual study. A statement that you snore, or a device seller's questionnaire, does not replace the required evaluation.
Not every mouthpiece qualifies
The policy distinguishes custom-fabricated equipment from prefabricated appliances, which it denies as not reasonable and necessary. The ordering practitioner and supplying dentist have different roles. Confirm their Medicare enrollment and billing arrangements before fabrication.
Understand your likely cost
Covered equipment under Original Medicare generally involves Part B deductible and coinsurance obligations. Ask for an estimate and whether the supplier accepts assignment. Medicare Advantage may use a supplier network or require authorization.
Keep the records together
- Evaluation and sleep-test reports.
- Written order and appliance details.
- Any required prior authorization.
- Cost estimate and coverage response.
If coverage is denied, request the specific reason. Your clinicians determine the appropriate treatment; an insurance explanation should not substitute for their clinical assessment.
Related coverage questions
- Medicare Wheelchairs and Scooters: Coverage Requirements
- How to Verify Your Medicare Coverage and Plan Enrollment
- A Medicare Medical Claim Was Denied: What to Do Next