How to Renew a CPAP Prescription

Quick answer: Check the expiry date on your prescription and ask your supplier what it will accept. A renewal usually requires a review of your symptoms, current settings and CPAP data, sometimes with a brief appointment. Start the process at least a month before you need a new machine or supplies. If the prescription has already lapsed, contact your clinician rather than buying equipment without one.

Why prescriptions expire

A CPAP prescription is tied to a diagnosis and a set of settings. Over time, your weight, health, medications or response to treatment can change. An expiry date prompts a review so the settings remain appropriate. It also gives suppliers a current document to dispense against.

Not every country or supplier enforces expiry in the same way. Some require a new prescription every year; others accept an older one if the clinic confirms ongoing need. Ask before you are caught short.

When to start the renewal

Start at least four to six weeks before your prescription expires or before you need a new machine. Mask and supply orders may be quicker, but a machine order can take longer. If you are moving, traveling or changing suppliers, start earlier.

Put a reminder in your calendar. Do not wait for the supplier to tell you; they may only notice at the point of sale.

What the clinician will need

• Your original sleep study or a summary of the diagnosis
• Current CPAP settings and device type
• A recent data report: usage, leak, residual AHI and pressure
• Your symptoms and any changes since the last review
• A medication list and relevant health changes
• Your supplier's requirements, if they have specific forms

A brief telehealth appointment may be enough if your treatment is stable. If your symptoms have changed or your data is poor, the clinician may want a longer review or a repeat study. Our guide to what a CPAP prescription includes explains the fields.

What the renewal covers

A renewal is not just a new date. The clinician should confirm that the diagnosis is still correct, the device and mode are appropriate, and the settings still match your needs. If your weight has changed, if you have new heart or lung problems, or if your data shows leak or residual events, the renewal may include a plan to address them.

Ask for a copy of the renewed prescription and check that the device, pressure and mask details are correct before you send it to the supplier.

If your prescription has lapsed

Do not panic, and do not buy a new machine from an unregulated seller who offers a prescription as part of the deal. Contact the clinician who originally prescribed it or your GP. They may renew it after a review, even if the original date has passed.

If your old clinic has closed, ask your GP for help finding the records or a new sleep clinician. In many countries, your GP can issue a prescription for ongoing CPAP if the diagnosis and settings are documented.

Online renewal services

Some telehealth services offer prescription renewal for stable CPAP users. They typically ask for your study report, current settings and a data download, then arrange a video or phone review. This can be convenient, especially in rural areas.

Check that the clinician is licensed where you live, that the service reviews your data rather than just selling a document, and that your supplier will accept the prescription. A cheap online renewal that no supplier accepts is not a saving.

What it costs

The cost depends on your health system. A public clinic may renew at no charge; a private consultation may cost a standard visit fee. Some online services charge a flat fee. Ask whether the fee includes the data review and the prescription document.

If you need a new sleep study before renewal, that is a separate cost. Ask why it is needed and whether a review of your existing data would be enough.

Questions to ask

1. When does my current prescription expire?
2. What does my supplier require for a renewal?
3. Can this be done by telehealth?
4. Do you need my SD card or a printed report?
5. Will you review my settings as well as renew the document?
6. What happens if my data shows a problem?

Our guide to getting started with CPAP covers ongoing treatment, and our sleep doctor directory can help you find a clinician.

If the supplier rejects the renewal

Ask for the reason in writing. Common issues are a missing pressure setting, an expired date, a different device model or a prescription that does not match the order. Send the rejection to the prescriber's office and ask them to correct or clarify it.

If the supplier still refuses, ask whether a supervisor or the funding body can review the case. Do not buy a replacement machine from an unregulated seller while the paperwork is unresolved.

Frequently Asked Questions

How long is a CPAP prescription good for?

It varies by country, prescriber and supplier. Many are valid for one to two years; some have no formal expiry but require periodic review. Check the document and ask your supplier what it will accept.

Can I renew my CPAP prescription online?

Some telehealth services offer renewal for stable users, usually after reviewing your study report, settings and data. Check licensing, supplier acceptance and whether the clinician actually reviews your data.

What if my CPAP prescription expired years ago?

Contact your original clinician or GP. They may renew it after a review of your diagnosis, settings and current data. Do not buy a new machine without a valid prescription if one is required.

Do I need a sleep study to renew my prescription?

Not usually if your diagnosis is established and your treatment is stable. The clinician may review your data and symptoms. A repeat study may be needed if your symptoms have changed significantly.

Can my GP renew my CPAP prescription?

In many countries, yes, especially if the diagnosis and settings are documented. Some suppliers or funders require a sleep specialist. Ask before booking.

What happens if I cannot get a renewal before my supplies run out?

Ask your clinician for an urgent review or a bridging supply. Do not reuse supplies beyond their intended life or change settings without advice. Explain the situation to your supplier.

This article is general information, not medical advice. It does not replace an assessment by a qualified clinician who can review your history, medications and test results.