HCPCS codes for DME run on the Level II E-code set, each code covering a category of equipment such as wheelchairs, hospital beds, or oxygen concentrators. Medicare requires a Standard Written Order and supporting medical records before a claim goes out, and claims route through a dedicated DME Medicare Administrative Contractor, not a standard Part B contractor. Getting the code, order, and documentation aligned, ideally checked through a medical billing audit, separates a paid claim from a denied one.
What Code Range Covers Durable Medical Equipment?
DME is billed primarily under the E-code range of HCPCS Level II, spanning roughly E0100 through E8002, with related accessory and supply codes in the K-code range used specifically by the DME Medicare Administrative Contractors.
What Order Does Medicare Require Before Billing DME?
A Standard Written Order (SWO) must be on file before a claim is submitted. The SWO replaced the older Detailed Written Order in 2020, per Noridian’s DME MAC guidance.
Are Certificates of Medical Necessity Still Required?
No. CMS discontinued Certificates of Medical Necessity for all DME product categories effective January 1, 2023. Claims submitted with a CMN after that date are rejected. A complete SWO plus supporting medical records now carries that documentation burden.
Is the DMEPOS Competitive Bidding Program Active in 2026?
The program is restarting. Under the CY 2026 Final Rule, CMS reopened the bidding process. The bidding window opens in late summer or fall 2026, with new contracts taking effect no later than January 1, 2028.
Key Takeaways
- DME is billed under HCPCS Level II E-codes, with a companion set of K-codes used specifically through the DME MACs.
- A Standard Written Order is required before billing; it replaced the Detailed Written Order for dates of service on or after January 1, 2020.
- Certificates of Medical Necessity were discontinued for all DME categories effective January 1, 2023, and claims filed with a CMN after that date are rejected.
- DME claims route to a dedicated DME Medicare Administrative Contractor, not the standard Part B contractor, a distinction also relevant when tracking how long Medicare credentialing takes for new DME suppliers.
- Capped rental items follow separate billing rules tied to anniversary dates, distinct from outright purchase items.
- The DMEPOS Competitive Bidding Program is restarting under the CY 2026 Final Rule, with new supplier contracts expected by January 1, 2028.
What Counts as Durable Medical Equipment?
Medicare defines DME as equipment that can withstand repeated use, serves a medical purpose, is generally not useful to someone without an illness or injury, and is appropriate for use in the home. Wheelchairs, hospital beds, oxygen equipment, and patient lifts are common examples, all billed under E-codes. This category comes up constantly in wound care billing, wherever equipment supports a patient’s recovery or ongoing condition management.
Who Bills DME Claims?
DME suppliers bill these claims, not the ordering physician’s office directly, though the physician’s practice is responsible for generating a complete and compliant order. A supplier without proper accreditation and enrollment cannot bill Medicare for DME regardless of how well-documented the order is.
What Are the Key Things to Know About HCPCS Codes for DME?
The ten points below cover the coding, ordering, and billing mechanics specific to DME.
The E-Code Range and What It Covers
E-codes span roughly E0100 through E8002 and cover the bulk of durable medical equipment: mobility devices, respiratory equipment, hospital beds, and patient safety equipment like lifts. Each code describes a category of item by function and general specification, such as a hydraulic patient lift, rather than a specific manufacturer’s model.
Standard Written Order (SWO) Requirements
An SWO must contain the beneficiary’s name or Medicare Beneficiary Identifier, the order date, a general description of the item, the quantity when applicable, and the treating practitioner’s name and signature. A signature stamp or date stamp does not satisfy this requirement. A live or compliant electronic signature is required.
Written Order Prior to Delivery (WOPD)
For certain higher-cost or higher-risk items, Medicare requires the order to reach the supplier and sit on file before the item is delivered, not just before the claim is submitted. Delivering an item that requires a WOPD before the order is complete puts the entire claim at risk of denial.
Medical Necessity Documentation
Beyond the SWO, the supplier must maintain medical records showing the item is reasonable and necessary for the diagnosis or treatment of the patient’s condition. This typically includes clinical notes describing the functional limitation the equipment addresses, not just the diagnosis code alone.
Capped Rental vs Purchase Billing
Many DME items fall under capped rental rules, billed monthly up to a set number of months before ownership transfers or rental payments stop. Other items are billed as outright purchases from the start. Billing a capped-rental item as a purchase, or vice versa, is a common and avoidable claim error.
DME MAC Claims Routing
DME claims are processed by one of the regional DME Medicare Administrative Contractors, a separate track from the Part A/B MACs that handle physician and facility claims. This means DME-specific coverage determinations, appeal processes, and documentation requests come from a different contractor than the rest of a practice’s Medicare billing.
Modifiers Specific to DME
DME claims frequently require modifiers indicating new versus used equipment, rental month, or right/left laterality for items like braces. Omitting a required modifier is one of the fastest ways to trigger a rejection even when the underlying HCPCS code and documentation are otherwise correct.
When a New Order Is Required
A new order is required for every purchase or initial rental, whenever the order changes, on a periodic basis when the medical policy specifies renewal, whenever an item is replaced, and when a beneficiary switches suppliers and the new supplier cannot obtain the prior valid order.
The 2026 Competitive Bidding Restart
CMS’s CY 2026 Final Rule restarts the DMEPOS Competitive Bidding Program after a gap period that began in 2024. The next round covers continuous glucose monitors and insulin pumps, urological and ostomy supplies, and off-the-shelf back and knee braces. New supplier contracts are expected to take effect no later than January 1, 2028. A supplier billing in a competitive bidding area will need a winning contract to bill Medicare for the affected categories once contracts take effect, per the CMS fact sheet.
Common Reasons DME Claims Get Denied
Outdated or invalid HCPCS codes, missing or incomplete SWOs, delivery before a required WOPD was on file, and documentation that establishes a diagnosis but not the specific functional need for that item are the recurring denial drivers across DME claim types.
When to Bill DME as a Rental?
Bill DME as a rental when the item falls into a capped rental category, such as many types of wheelchairs and oxygen equipment, where Medicare pays a monthly rental fee up to a defined cap before the supplier either retains ownership or, for certain items, transfers ownership to the beneficiary. Rental billing requires tracking the anniversary date and rental month on each claim.
When to Bill DME as a Purchase?
Bill DME as a purchase for items Medicare classifies as inexpensive or routinely purchased, or once a capped rental item reaches its rental cap and ownership transfers. Purchase billing is a single claim rather than a recurring monthly cycle, but it still requires the same SWO and medical necessity documentation as a rental.
Best Practices for DME Billing
- Confirm the SWO contains every required element before the item is delivered, not after.
- Check whether the item requires a WOPD, and hold delivery until that order is complete.
- Verify supplier accreditation and enrollment status regularly, since lapses block claims entirely.
- Track capped rental anniversary dates carefully to avoid billing a rental month incorrectly.
- Watch for Competitive Bidding Program updates in affected categories, since contract status can determine whether a claim is payable at all.
Mistakes to Avoid With DME Billing
- Submitting a claim with a Certificate of Medical Necessity instead of a current Standard Written Order.
- Delivering equipment before a required Written Order Prior to Delivery is on file.
- Billing a capped rental item as an outright purchase, or the reverse.
- Leaving out a required laterality or rental-status modifier on the claim line.
- Failing to update a beneficiary’s order when the item, quantity, or supplier changes.
Illustrative Documentation Example
The scenario below is a hypothetical example for teaching purposes, not an actual patient billing case.
A patient recovering from a hip fracture needs a wheelchair. The ordering physician issues an SWO specifying the wheelchair type, and the supplier confirms it falls under capped rental rules. The supplier bills monthly under the appropriate rental modifier, tracking the anniversary date until the rental cap is reached, at which point billing shifts to reflect the ownership transfer.
Conclusion
DME billing succeeds or fails on documentation sequencing: the right code, a complete SWO, and, where required, a WOPD on file before delivery. Getting that sequence right the first time avoids the rework of a denied claim later. A practice juggling both clinical documentation and DME supply billing often separates the two workflows through dedicated charge entry and charge capture, so equipment orders do not get lost inside general E/M documentation.
FAQs
Can someone other than the treating practitioner complete the SWO?
Yes, someone else may fill out the SWO, but the treating practitioner must review its content and sign it personally, per Noridian’s SWO guidance. Signature and date stamps are not accepted.
What happens if a DME claim is submitted with an outdated HCPCS code?
The claim is typically rejected outright, since the code no longer exists in the current year’s code set. Building a code-validity check into claims submission and processing catches this before it reaches the payer.
Does Medicare cover DME repairs and replacement parts?
Coverage depends on the specific item and circumstances, including whether the equipment is beneficiary-owned and whether the repair cost is reasonable relative to a replacement. Documentation must still support medical necessity for the repair itself.
How does the 2026 Competitive Bidding restart affect existing suppliers?
Existing suppliers in affected product categories and competitive bidding areas will need to participate in the new bidding round and win a contract to continue billing Medicare for those items once contracts take effect. See the CMS fact sheet for the full timeline.
Is a new SWO needed every time a DME item is refilled or resupplied?
Not necessarily. If the original order’s general description still applies and nothing about the order has changed, a new order is not required. A new order is needed specifically when the item, quantity, or other order details change.
