CPAP Adherence Outreach: A Day by Day 90 Day Plan for DMEs

Matteo

Updated October 2026. Written by Matteo Grassi, clinical psychologist and cofounder of HANA Health.

A CPAP adherence outreach plan is a schedule of patient contacts across the first 90 days of therapy, timed to catch problems before they cost coverage. Medicare requires use of 4 or more hours a night on 70% of nights in a consecutive 30 day window within the first 3 months. The strongest evidence says to start in week one, not at day 30.

I've spent a lot of time on the patient side of these calls. The call that matters most is rarely the one at day 60. It's the one nobody made at day 4.

Key facts

The Medicare bar: use of at least 4 hours a night on 70% of nights during a consecutive 30 day period within the first 3 months, plus an in person reevaluation between day 31 and day 91 (LCD L33718).
Late visit consequence: if the reevaluation happens after day 91 and shows benefit, continued coverage starts on the date of that visit, not before (LCD L33718).
Day 3 signal: in a 100 patient study, use above 4 hours at day 3 predicted adherence at day 30 (Budhiraja et al., SLEEP, 2007).
Month 1 signal: in 1,000 UK patients, 98% of those who were non adherent at month 3 were already non adherent by the end of month 1 (Dielesen et al., Thorax, 2025).
Feedback beats education alone: telemonitoring with automated feedback reached 65.6% Medicare adherence at 90 days, against 53.5% for usual care, in 556 patients prescribed CPAP (Hwang et al., AJRCCM, 2018).
Education only: the same trial found web based education alone didn't significantly change adherence (61.0%, P = 0.07).

What does a first 90 days CPAP outreach plan include?

A good plan has five parts: a setup check on day zero, short early contacts in week one, a data review at every contact, a decision point at day 30, and a handoff to the day 31 to 91 visit. It's built around device data, not around a calendar alone.

The point of the schedule is to match effort to risk. Patients who are using the device well need a light touch. Patients drifting down in the first two weeks need a conversation, a fix, and another look within days. Treat the plan as a set of triggers with default dates, not a fixed script that runs the same for everyone.

Here's the structure that follows from the evidence and Medicare's rules. It's a suggested framework, not a validated protocol, so adapt it to your patient mix and your payers.

Why does the first week matter so much?

Because usage patterns set early. In a retrospective study of 100 patients, use above 4 hours per night at day 3 predicted adherence at day 30 (Budhiraja et al., SLEEP, 2007). A French cohort of 420 patients found early use was the single best predictor of adherence at 4 months, and the authors advised checking use no later than 2 weeks (Gentina et al., 2015).

The Thorax analysis of 1,000 patients at 5 UK sleep centres makes the point harder. About 62% of the cohort was non adherent at month 3, and 98% of those patients were already non adherent by month 1. That happened even though most pathways delivered a first follow up within the first month. The authors concluded that follow up at day 30 to 90 is too late to prevent non adherence (Dielesen et al., Thorax, 2025).

One honest limit: these are observational studies of prediction. They show who is at risk, not that a call on day 4 fixes it. The trial evidence for that is covered below.

What does Medicare need to see by day 91?

Two things. First, objective adherence: 4 or more hours a night on 70% of nights during one consecutive 30 day period anytime in the first 3 months, reviewed by the treating practitioner. Second, an in person reevaluation between day 31 and day 91 documenting improved OSA symptoms (LCD L33718).

Adherence has to be shown through a direct download or visual inspection of usage data, delivered as a written report the practitioner reviews and keeps in the record. For claims, the supplier may add the KX modifier from month 4 only when both the initial and continued coverage criteria are met (Policy Article A52467).

This is why outreach timing matters for the DME. The 30 day window can sit anywhere in the first 3 months, but the visit can't happen before day 31 and the clock on it runs out at day 91. For the full visit checklist, see our guide to the CPAP face to face reevaluation.

What should the day by day schedule look like?

Use fixed checkpoints, with extra contacts triggered by data. Here is one workable schedule.

Day 0 to 1, setup and first night. Confirm mask fit, the patient's understanding of how to put it on, and who to call when something's wrong. Make sure the device is transmitting data.
Day 3, first data check. Look at hours and nights used. If use is under 4 hours, call the same day and ask what happened last night, in plain words.
Day 7, week one review. Review leaks, pressure comfort and dryness. Fix the cheap problems first: cushion size, headgear tension, humidifier settings.
Day 14, drift check. Compare week two with week one. A falling trend matters more than a single bad night. Offer a mask change or a clinician referral if the problem isn't mechanical.
Day 21, habit check. Ask when in the night the patient takes it off. Early removal often points to a fixable comfort issue.
Day 30, decision point. Calculate how the patient is tracking against 4 hours on 70% of nights. If they're below, escalate to the prescriber for a plan rather than waiting.
Day 45, rolling window check. Confirm that a qualifying 30 day window exists or is still reachable before day 90. Book the reevaluation visit now if it isn't booked.
Day 60, visit confirmation. Confirm the appointment falls between day 31 and day 91, and that the data report will be ready for the practitioner.
Day 75 to 85, packet check. Send the usage report to the practitioner. Remind the patient to keep using the device through the visit.
Day 91, deadline. Confirm the visit happened and the documentation is in the record before month 4 claims go out.

What should each call or message cover?

Each contact should answer three questions: how many hours did you use it, what got in the way, and what are we changing before the next check? Start from the patient's own data, then ask open questions about the night, not the device.

Keep the tone free of blame. Patients who feel judged stop answering. A useful call opens with what went well, names the number, and moves to one fix. For example: "You used it six nights this week, which is solid. Two nights ended early. What woke you up?"

Do ask about the practical causes in a consistent order: mask leak, pressure or air feel, dry mouth or nose, claustrophobia, partner or sleep schedule, and doubt that it's helping. Doubt matters most. A patient who doesn't believe the device works will find a reason to take it off.

Record each contact: the data reviewed, the problem named, the action taken, and the next check date. That record helps your team, and it helps if an auditor ever asks.

What does the evidence say outreach can and can't do?

Feedback tied to actual usage data helps. Generic education mostly doesn't. In the Tele OSA trial, 556 patients prescribed CPAP were randomized to usual care, web education, telemonitoring with automated feedback, or both. Medicare adherence was 53.5% with usual care, 61.0% with education, 65.6% with telemonitoring and 73.2% with both (Hwang et al., AJRCCM, 2018).

Read that carefully. The education arm didn't reach statistical significance for adherence, though it did raise attendance at the sleep evaluation class. The authors suggest accountability may work better than education for changing use. They also note the study wasn't powered to detect small effects of education.

Two more limits. The trial ran 90 days, so it doesn't tell you whether gains last after contact stops. Our companion piece on what improves CPAP adherence goes through the longer term evidence, where effects fade. And none of this proves a particular schedule is best. No trial has compared the exact timetable above against another.

What this means for your DME

Start the clock at setup, not at the first problem. Pull device data on day 3, set rules for who gets a call and who doesn't, and make day 30 a real decision point. Track how many patients hit a qualifying window by day 60, because the ones who haven't are your last chance to intervene before the visit.

Match staff time to risk. A simple tier works: patients above 5 hours with steady use get light touch; patients between 3 and 5 hours get a call within 48 hours of a bad trend; patients under 3 hours at day 3 or day 7 get a same day call and a clinician review. Those thresholds are an example, not a standard. Set yours from your own data.

Then connect the schedule to your billing. If the visit slips past day 91, coverage restarts at the visit date, so a missed appointment has a real revenue cost. For the money side, see what a non adherent CPAP patient costs a DME.

If you'd rather not run every call by hand, HANA builds voice follow up for CPAP adherence programs that logs each contact for the chart. You can read more on the HANA Sleep page.

Frequently asked questions

When should the first CPAP adherence call happen?

Within the first 3 days, once data is flowing. Studies show use at day 3 already predicts later adherence, so a data check and a call to anyone under 4 hours is a sensible default.

Can the 30 day adherence window be any 30 days in the first 3 months?

Yes. LCD L33718 says the 30 consecutive days can fall anytime in the first 3 months of use. The reevaluation still has to take place between day 31 and day 91.

What happens if a patient is non adherent at day 30?

They can still qualify if a 30 day window of 4 hours on 70% of nights is reached before the end of month 3. Escalate early, fix the cause, and loop in the prescriber instead of waiting for day 90.

Does Medicare require outreach calls?

No. The LCD requires the usage data, the practitioner's review and the in person visit. Outreach is how many suppliers reach those requirements, but it's not itself a coverage condition.

Is web education enough to improve CPAP adherence?

Not on its own in the best available trial. Education didn't significantly change adherence in the Tele OSA study, while feedback based on actual usage did.

Sources

Centers for Medicare and Medicaid Services. Local Coverage Determination L33718, Positive Airway Pressure (PAP) Devices for the Treatment of Obstructive Sleep Apnea. Revision effective 2024. cms.gov
Centers for Medicare and Medicaid Services. Policy Article A52467, Positive Airway Pressure (PAP) Devices for the Treatment of Obstructive Sleep Apnea. cms.gov
Hwang D, et al. Effect of Telemedicine Education and Telemonitoring on CPAP Adherence: The Tele OSA Randomized Trial. American Journal of Respiratory and Critical Care Medicine, 2018. PubMed
Budhiraja R, et al. Early CPAP Use Identifies Subsequent Adherence to CPAP Therapy. SLEEP, 2007. doi.org
Dielesen J, et al. Six early CPAP usage behavioural patterns determine peak CPAP adherence and permit tailored intervention. Thorax, 2025. PMC
Gentina T, et al. Does CPAP Use in the First 15 Days Predict its Use after 4 Months? A Prospective French Cohort Study. 2015. doi.org

This article is educational and isn't billing, coding, clinical or legal advice. Check current CMS guidance and your MAC before you bill. Want to talk through your own first 90 days process? Book a discovery call.