Does Medicare Cover Oxygen Concentrators? Complete Insurance Guide 2025

Understand Medicare Part B coverage for oxygen concentrators and CPAP machines. Learn about eligibility requirements, documentation needed, and out-of-pocket costs.

Does Medicare Cover Oxygen Concentrators?

Yes, Medicare Part B covers oxygen concentrators and oxygen equipment when your doctor determines it is medically necessary for your condition. However, understanding the specific requirements and coverage details is essential to avoid unexpected costs.

Medicare Part B Oxygen Coverage

Eligibility Requirements

To qualify for Medicare-covered oxygen equipment, you must meet all of the following criteria:

1. Qualifying oxygen level test — Your arterial blood gas (ABG) or pulse oximetry must show:

• SpO2 ≤ 88% at rest, OR
• PaO2 ≤ 55 mmHg at rest, OR
• SpO2 ≤ 88% during exercise (for portable oxygen), OR
• SpO2 ≤ 88% during sleep (for nighttime oxygen)

1. Certificate of Medical Necessity (CMN) — Your Medicare-enrolled physician must complete and sign a CMN documenting your condition

1. Face-to-face evaluation — Your doctor must have examined you within 30 days of the prescription

1. Medicare-enrolled supplier — Equipment must come from a Medicare-enrolled DME supplier

What Does Medicare Cover?

Equipment	Coverage	Your Cost (after deductible)
Home Oxygen Concentrator	Rental for 36 months, then ownership	20% coinsurance
Portable Oxygen Concentrator	May be covered with documentation	20% coinsurance
Oxygen Tubing & Cannulas	Covered as supplies	20% coinsurance
Humidifier Bottle	Covered when prescribed	20% coinsurance
Oxygen Contents (refills)	Covered for portable tanks	20% coinsurance

The 36-Month Rental Rule

Medicare covers oxygen equipment through a rental model:

• Months 1-36: You rent the equipment, paying 20% of the Medicare-approved amount each month
• After Month 36: The supplier transfers ownership to you at no additional cost
• Months 37-60: The supplier must continue to provide maintenance, servicing, and supplies

Typical Monthly Costs

With Original Medicare (after meeting the Part B deductible of $240 in 2025):

• Monthly rental cost: Approximately $35-$55/month (your 20% share)
• Total 36-month cost: Approximately $1,260-$1,980 out-of-pocket
• Medicare Advantage: Costs vary by plan; some offer lower copays

Medicare CPAP Machine Coverage

Requirements for CPAP Coverage

1. Documented sleep study with AHI ≥ 15, or AHI 5-14 with symptoms
2. Face-to-face clinical evaluation with your doctor
3. Initial 90-day trial — You must demonstrate compliance (using CPAP ≥ 4 hours/night on 70% of nights)
4. Follow-up visit between days 31-91 to confirm therapy is working

What CPAP Equipment Does Medicare Cover?

• CPAP machine (rental for 13 months, then ownership)
• CPAP mask and headgear
• Tubing
• Filters
• Humidifier (if prescribed)

CPAP Supply Replacement Schedule

Supply	Medicare Replacement Schedule
Full Face Mask	Every 3 months
Nasal Mask	Every 3 months
Nasal Pillows	Every 3 months
Mask Cushion	Every 1-2 months
Headgear	Every 6 months
Tubing	Every 3 months
Disposable Filters	Every 2 weeks
Non-disposable Filters	Every 6 months

How to Reduce Out-of-Pocket Costs

1. Medicare Supplement (Medigap)

A Medigap policy can cover your 20% coinsurance, potentially reducing your oxygen costs to zero after the deductible.

2. Medicare Advantage Plans

Some MA plans offer lower copays for DME or include oxygen benefits in their supplemental coverage.

3. State Medicaid Programs

If you have both Medicare and Medicaid (dual eligible), Medicaid may cover the remaining costs.

4. Manufacturer Assistance Programs

Many oxygen concentrator manufacturers offer financial assistance programs for qualifying patients.

5. Purchase Without Insurance

If you prefer to own your equipment outright rather than rent through Medicare, purchasing directly can sometimes be more economical long-term:

• No 36-month rental commitment
• Freedom to choose any supplier
• Own the equipment immediately
• No paperwork or compliance requirements

Common Questions About Medicare Oxygen Coverage

Can I choose my own oxygen concentrator brand?

Medicare covers the equipment category, not specific brands. Your DME supplier determines which equipment you receive under the rental program. Purchasing directly from 800Oxygen gives you brand choice.

What if my oxygen needs change?

Contact your doctor for a new prescription. Medicare will cover equipment changes when medically documented.

Is portable oxygen covered separately?

Portable oxygen may be covered in addition to stationary oxygen if your physician documents the medical necessity for mobility.

What about travel oxygen?

Medicare does not typically cover oxygen equipment specifically for travel. Purchasing a portable concentrator directly gives you the most travel flexibility.

Our insurance specialists at 800Oxygen help navigate Medicare and private insurance coverage. Call (877)699-4365 for a free benefits verification.