If you've recently been prescribed CPAP therapy, you've probably heard the word compliancemore than once — from your equipment supplier, your sleep specialist, or your insurance company. Here's what it actually means, how it's tracked, and how you can see your own data.
Medical disclaimer
AirwayLab is an informational tool only. Nothing in this article constitutes medical advice, diagnostic guidance, or a recommendation to change your therapy settings. Always discuss treatment decisions with your qualified healthcare provider.
What is CPAP compliance?
CPAP compliance refers to how consistently you use your therapy device. The term comes primarily from the insurance and clinical world: payers and providers use it to confirm that a patient is actually using the equipment they're being reimbursed for, and that therapy is getting enough nightly use to be clinically meaningful.
In plain terms: compliance is a record of how many hours you run your machine each night.
What are the standard CPAP compliance requirements?
The most commonly cited benchmark in the United States is 4 hours per night for at least 70% of nights over a 30-day period. This threshold comes from CMS (the Centers for Medicare & Medicaid Services) and has been widely adopted by private insurers.
Important caveats
- Requirements vary by insurer. Your specific plan may have different thresholds or review windows. Always check your policy documents or ask your supplier directly.
- Country matters. The 4hr/70% rule is a US-centric benchmark. Requirements in Australia, the UK, Canada, and elsewhere differ.
- Initial trial periods are common.Many US insurers require a compliance check at 31–90 days before they confirm ongoing coverage of your device.
This is general information — your insurer or clinician is the right source for guidance specific to your situation.
How is CPAP compliance tracked?
Your machine logs usage data automatically. How that data gets to your provider or insurer depends on your equipment:
Machine display
Most modern CPAP/BiPAP devices show last-night and 7-day usage summaries directly on screen.
SD card / USB
Detailed session data is stored locally. You or your provider can read it with software like OSCAR or AirwayLab.
Built-in wireless modem
Many newer devices (e.g. AirSense, DreamStation) transmit nightly data automatically to manufacturer cloud portals. Your prescribing provider and/or DME supplier may have access.
The wireless modem path is typically how formal compliance monitoring works for insurance purposes — the data flows to the provider portal without any action on your part.
Can I see my own compliance data?
Yes. Your usage data belongs to you, and several tools let you read it:
- Machine display— a quick glance at nightly hours
- OSCAR— free, open-source desktop software that gives you deep access to your SD card data
- AirwayLab— a browser-based tool that reads your SD card data locally in your browser, with no uploads. Your data never leaves your device. It shows session length alongside AHI, flow limitation, leak rate, and other metrics so you can see the full picture, not just hours.
Note:AirwayLab is not a compliance monitoring tool for insurance purposes — it doesn't report to insurers or providers. It's a way for you to understand your own therapy data.
What is a sleep apnea compliance score?
Some provider portals and DME suppliers summarise compliance as a percentage — often called a compliance score or usage score. It's typically the percentage of nights in a reporting window that met the minimum hours threshold (commonly ≥4 hours).
Example
If you used your device for 4+ hours on 22 out of 30 nights, that's a 73% compliance score — just over the common 70% threshold.
The exact calculation varies by platform. If your insurer or provider uses a specific compliance score, ask them how they define and calculate it.
What if I'm not meeting my compliance target?
First: this is worth discussing with your prescribing clinician, not just your insurer. Compliance numbers are a signal, not the whole story.
That said, the PAP community commonly discusses several factors that can affect nightly usage hours:
- Mask fit and comfort— leaks, pressure points, or discomfort are common early reasons people cut sessions short
- Pressure settings— some users find their prescribed pressure uncomfortable, particularly on exhalation; settings like EPR (ResMed) or Flex (Philips) adjust exhalation pressure, which some users report affects their comfort
- Aerophagia (swallowed air)— can cause bloating or discomfort, especially at higher pressures
- Claustrophobia or anxiety— not uncommon with full-face masks
Tools like AirwayLab let you see your session data alongside events like flow limitations and mask leaks, which can be useful context when talking to your clinician or titration specialist.
View your usage data
Curious what your CPAP compliance hours and therapy data actually look like? AirwayLab works in your browser, reads your SD card locally, and requires no account for core features.
Open AirwayLab