A capped rental is a Medicare payment category for durable medical equipment in which the supplier is paid a monthly rental fee for up to 13 months of continuous use, after which the patient owns the equipment. Hospital beds, CPAP devices, many wheelchairs, and standard power wheelchairs are common capped rental items. The monthly payment is a percentage of the item's purchase price: higher in months 1–3, lower in months 4–13. After the 13th paid month, rental payments stop, ownership passes to the beneficiary, and Medicare may pay separately for reasonable and necessary maintenance and servicing.

That definition fits in a sentence. Running it correctly across hundreds of active rentals does not. Every capped rental is a 13-month clock with its own modifiers, documentation checkpoints, and events that can pause or restart it. This guide covers what the category means, how the payments are structured, what happens at month 13, and where capped rentals tend to break down in day-to-day DME and HME operations.

What does capped rental mean?

Medicare sorts durable medical equipment into payment categories, and the category decides how an item is paid. CMS lists them as inexpensive or routinely purchased items, frequently serviced items, oxygen and oxygen equipment, capped rental items, certain customized items, and other covered items. "Capped" refers to the limit on rental payments: Medicare pays a monthly rental for a period of continuous use not to exceed 13 months, and then stops.

The logic is that higher-cost equipment that a patient may need for a long but uncertain period should not be purchased outright on day one. Renting protects the program if the need ends early; the cap protects the beneficiary from renting indefinitely. If you are new to the underlying definitions, our explainer on what DME is and how it gets paid for covers the broader framework.

How capped rental payments work

Capped rental fees are calculated from the item's base purchase price on the DMEPOS fee schedule, updated annually. Per CMS and the DME MAC payment category guidance, the monthly rental follows two tiers:

A few details matter in practice:

• Complex rehab power wheelchairs have a purchase option. They can be purchased in the first month. The supplier must offer the option when the item is first furnished and notify the DME MAC that it did; no first-month rental is paid until that notification is made.
• Fee schedule amounts are not the only rate in play. In competitive bidding areas, single payment amounts replace fee schedule amounts for included items, and Medicare Advantage and commercial payers set their own rental terms. The 13-month rule is a Medicare fee-for-service rule; your contracts decide everything else.
• Coinsurance applies every month. Under Part B the beneficiary owes coinsurance on each rental month after the deductible, which means patient-responsibility billing has to follow the same 13-month schedule as the claims.

What equipment is paid as a capped rental?

Items are assigned to the capped rental category by HCPCS code, so the authoritative answer for any specific product is the fee schedule and the applicable DME MAC policy. Commonly encountered capped rental items include:

• Hospital beds and many support surfaces
• CPAP and bi-level respiratory assist devices
• Many manual wheelchairs, standard power wheelchairs (K0813–K0831, K0898), and complex rehab power wheelchairs
• Patient lifts and a range of other higher-cost home equipment

Several things that look like capped rentals are not:

• Oxygen equipment has its own rule: Medicare equipment payments may not continue beyond 36 months of continuous use, and payments for oxygen contents can continue afterward.
• Frequently serviced items such as ventilators are paid on a continuous monthly rental, with no cap, because the rental covers ongoing servicing.
• Inexpensive or routinely purchased items such as canes and walkers can be rented or purchased, and the supplier must tell the beneficiary they have that choice.
• Parenteral and enteral nutrition pumps follow a separate rental-or-purchase rule that can run up to 15 months.

What happens at month 13

When the 13th rental month is paid, ownership of the equipment passes to the beneficiary. Three things follow:

• Rental billing must stop. Claims submitted for a 14th month will deny, and a run of them is the kind of pattern that draws attention in a post-payment review.
• The asset leaves your fleet. Serialized equipment that was a rental asset on month 12 is the patient's property on month 14. If your inventory system still shows it as a company-owned rental, your asset counts and depreciation are wrong from that point on.
• The service relationship continues. Medicare may pay for reasonable and necessary maintenance and servicing of beneficiary-owned equipment (parts and labor not covered by a warranty). Replacement is governed separately, generally by the five-year reasonable useful lifetime.

Your rental tracking and inventory system should mark the conversion automatically from the rental count, not rely on someone remembering it.

Interruptions, supplier changes, and when the clock restarts

"Continuous use" does not mean every day without exception. The rules around interruptions are where most capped rental confusion lives:

• Short interruptions do not restart the clock. A new 13-month period begins only if the interruption exceeds 60 consecutive days, plus the days remaining in the rental month in which use stopped.
• Break in billing. If the patient enters a hospital, SNF, hospice, or Medicare Advantage plan and the stay runs past the end of the rental month, rental payments pause until home use resumes and a new date of service is established. The claim should carry a break-in-billing narrative.
• Break in service or break in need. If the equipment is returned because it is no longer medically necessary and need later returns, medical necessity has to be re-established with a new order, a new face-to-face examination, a statement explaining the interruption, and supporting records. Only then can a new 13-month period begin.
• Changing suppliers does not restart the clock. A new supplier picks up the remaining months of the existing rental period. Moving to a new address does not restart it either.
• Substituted or modified equipment usually continues the existing period. A new 13-month period requires a substantial change in the beneficiary's medical condition that supports the different item.

Each of these depends on documentation captured at intake, not reconstructed later. A missing narrative or an undocumented break is a common reason a technically valid claim comes back denied; our guide to why DME claims get denied covers the broader pattern.

Where capped rentals go wrong operationally

The rules are well published. The failure points are almost always operational:

• The month-4 checkpoint. CPAP is the clearest example. Coverage starts with a 12-week trial; to continue billing with the KX modifier from month 4, the supplier needs a documented face-to-face re-evaluation and objective evidence of adherence within the window set by the LCD. A rental that rolls into month 4 without that documentation cannot carry KX, and the claims that follow are at risk.
• Modifier sequencing. KH, KI, and KJ have to follow the actual rental month, including after breaks in billing. Billing teams that track this in spreadsheets tend to drift.
• Billing past the cap. Without an automatic stop at month 13, recurring billing keeps running, and the result is denials or overpayments that have to be refunded.
• Supplier transfers. When a patient arrives mid-rental from another supplier, the starting month has to be confirmed before the first claim, or every claim after it is mis-sequenced.
• Asset status. Serial numbers, rental status, and ownership have to stay consistent between inventory, billing, and the patient record.

This is the work recurring-billing automation is built for. In Curasev, rental cycles, modifier progression, and the month-13 stop run inside automated billing, tied to the same serialized asset records used for rental tracking and inventory, while Seva AI document intake pulls orders and supporting documentation into the record before the rental starts. If you are evaluating platforms on how they handle this, our DME software buyer's guide lists the questions worth asking.

Related reading

• Rental Tracking and Inventory Management for DME providers
• Automated Billing Software for HME & DME Providers
• What Is DME? Durable Medical Equipment, Explained
• What Is a CMN? Certificate of Medical Necessity, Explained
• Missed Resupply: The Recurring Revenue That Quietly Disappears

This article summarizes Medicare fee-for-service capped rental policy as published by CMS and the DME MACs at the time of writing. Rules vary by item, jurisdiction, and payer; the current fee schedule and applicable LCDs and policy articles are the authoritative sources for any specific claim.