A Guide to DME Rental vs. Purchase in DME Billing

The Durable Medical Equipment (DME) is a medical device prescribed to patients to help them live a comfortable life and perform their daily activities. While we know that it is a hugely demanding market, the problem lies in the critical distinction between renting and purchasing equipment. In fact, for DME providers and DME billers, understanding these differences is paramount to avoiding costly errors, ensuring compliance, and optimizing patient care. Whether it is for the high-volume items like CPAP and BiPAP machines or walkers, billing for DME requires proficiency.

The Core Dilemma: Rental vs. Purchase

Billing for DME is not as easy as it seems, as for many DME items, payers here primarily include Medicare, Medicaid, and private insurance offer two primary avenues for coverage: rental or purchase. The choice between these two however has impacts on billing, patient responsibility, and the provider’s operational workflow. Thus, it is important to know the differences when you bill for any durable medical equipment.

The Rental Model: being the most common model, especially for higher-cost items, where it is the “capped rental” scheme predominantly used by Medicare. In fact, here are a few pointers that one need to know when you bill a DME item:

• Initial Rental Period (Months 1-13): For the first 13 consecutive months or as you may say, 1 year and a month, the DME item is rented to the patient and the provider bills a monthly rental fee. Medicare pays mostly the 80% of the approved amount and the patient is responsible for the remaining 20% (co-insurance) and any unmet deductible.
• Ownership Transfer (Month 14): This occurs after 13 months of continuous use of the rental item, at which point ownership of the DME item automatically transfers to the patient. The provider can no longer bill for rental fees.
• Also, one needs to know that once the patient owns the equipment, the provider can bill for maintenance, servicing and replacement parts (e.g., batteries, tubing, filters) if they are medically necessary and fall within coverage guidelines. These are typically billed separately using specific HCPCS codes.

Related Reading: DME Billing Guidelines for 2026: What’s Changing and Why It Matters

What do you mean by the Capped Rental Model?

This model was established to manage costs. For items that may not be needed indefinitely or whose long-term cost could exceed their purchase price, renting initially prevents excessive payouts.

Also, remember the 13-month capped rental comes with administrative challenges, like:

• Month-to-Month Monitoring: Providers must meticulously track each patient’s rental status to ensure accurate billing for each month. Any lapse in continuous medical necessity or a break in rental can reset the clock or invalidate claims and cause confusion.
• Ownership Transfer Alerts:  Systems must be in place to flag when a patient transitions from rental to ownership, preventing erroneous billing for rental payments post-transfer. Billing a rental fee after month 13 is a sure way to trigger an audit and recoupment.
• Timely Filing: Ensuring each monthly rental claim is submitted within the payer’s timely filing limit is crucial.

What is the DME Purchase Model?

For items where the administrative burden of monthly billing outweighs the cost savings of a rental, or where the item is clearly intended for long-term, continuous use from day one, a direct purchase is always more efficient.

The Billing Challenges: Rental vs. Purchase of DME:

The choice between renting and purchasing no doubt profoundly affects the billing process, introducing distinct challenges for DME providers. In fact, the DME billers need to be careful when dealing with:

• Documentation Requirements – Regardless of rental or purchase, robust documentation is a non-negotiable factor here.
• Detailed Written Order (DWO)- A comprehensive physician’s order is critical, specifying the item, duration, and medical necessity.
• Proof of Delivery (POD) – For both models, undeniable proof that the patient received the equipment is vital. This is a primary target in audits.
• Medical Necessity - This is the cornerstone where every claim must demonstrate that the item is reasonable and necessary for the patient’s condition, meeting specific Local Coverage Determinations (LCDs) and National Coverage Determinations (NCDs).

Cracking the DME codes:

It is no secret that DME billing heavily relies on HCPCS Level II codes and an array of modifiers that indicate the status of the equipment (rental month, purchase, trial period, etc.). A DME coder further need to be careful using rental modifiers and this is because, for capped rentals, specific modifiers (e.g., RR for rental) are used. DME billing when bill for subsequent months, different modifiers should be used indicate the continuity of the rental (e.g., KH, KI, KJ for months 1-3, 4-6, 7-13). Any incorrect application or omission of these modifiers will definitely lead to immediate denials and rejections. Also, in case of purchase modifiers, NU (new equipment) is used, and UE (used equipment) indicates the purchase details.

Also, do you know that once the ownership transfers, modifiers like RA (replacement of item) or RB (repair of item) are used for subsequent service billing?

With so much confusion between rental and purchase DME items, today DME suppliers and providers are looking for the easy way out. In fact, many of them are even investing in:

• Robust Billing Software: Invest in software specifically designed for DME, capable of tracking rental cycles, managing modifiers, and automating billing processes and EHR. Be it Brightree, DME Works, Team DME and more.
• Ongoing Staff Training: We all know that the DME rules change frequently; thus, regular training for billing staff on payer policies, LCDs, and NCDs is critical.
• Proactive Documentation Management: Implementing stringent protocols for obtaining, verifying, and storing all required documentation (DWO, POD, medical necessity notes) is essential here.
• Outsourcing to the right expert: Hiring experienced DME billers like us, where we take care of all your pre and post DME billing activities at only $ 7 an hour without compromising on productivity.

Related Reading: How To Eliminate DME Billing Challenges

Taking care of all your DME billing, SunKnowledge expert ensures a seamless operation for the rental and purchase of DME items. Managing the specialized equipment like CPAP / BiPAP, which is an intricate dance of regulatory compliance, financial management, and patient care coordination, we even offer after sales support from calling and others activities too. By mastering the nuances of documentation, modifier application, and the specific rules governing various equipment types, our DME billers navigate this complex landscape successfully with a dedicated team and account manager. Ensuring both their financial viability and the uninterrupted provision of essential medical devices to those who need them most, we ensure a 30% AR reduction in your DME billing within months.