Missing or defective order
Claims deny when the standard written order lacks a date, item description, quantity or signature, or arrives after delivery. We validate every order element before dispatch and route defects back to the prescriber.
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DME billing services
DME billing pays on HCPCS codes, rental or purchase modifiers and a documentation file the DME MACs can request at any time. A claim for a wheelchair, oxygen, CPAP or support surface pays only if the standard written order, the treating practitioner's notes and the proof of delivery line up with the policy.
What makes DME billing different
Supplier billing is a documentation business first and a claims business second, and the modifiers carry much of the weight.
- Items are billed with E, K, L and A series HCPCS codes and a payment modifier, RR for rental, NU for new purchase and UE for used, with KH, KI and KJ marking the months of a capped rental.
- Since 2023 the DME MACs no longer accept Certificates of Medical Necessity or DIFs; the standard written order, the medical record and any policy-specific test results must support the item instead.
- KX certifies that the Local Coverage Determination criteria are met and documented, while GA, GZ and GY identify items with an ABN on file, without one, or statutorily excluded, protecting patient responsibility.
- Power mobility, certain support surfaces, lower limb prostheses and other listed DMEPOS require prior authorization from the DME MAC before delivery, and oxygen and capped rentals follow fixed rental month rules.
Denials we see most in DME
Every denial gets a root cause, a fix and a feedback loop, so the same denial stops coming back.
Medical necessity not supported
The treating practitioner's note must show the clinical criteria in the LCD, not just the diagnosis. We review notes against the policy checklist, apply KX only when supported and request addenda before billing.
Same or similar equipment
Medicare denies items when a comparable one was paid within the reasonable useful lifetime. We run same-or-similar checks through the DME MAC portal before intake so patients are not left with unexpected balances.
How Core MB bills for DME
Core MB runs DME billing as an intake-to-payment pipeline: eligibility and same-or-similar checks, order validation, prior authorization, delivery documentation and rental cycle management all happen before the first claim. Supplier enrollment and revalidation run in the same client portal as provider credentialing. Credentialing for new providers runs in the same system, tracked live in your client portal.
- Intake checklist per HCPCS policy, including order, face-to-face, test results and ABN where coverage is doubtful.
- Rental cycle tracking with KH, KI and KJ progression, continued need documentation and purchase conversion.
- Prior authorization submission for listed DMEPOS and resupply scheduling that respects frequency limits.
Everything in the service
Suppliers get complete DME revenue cycle support from Core MB, from eligibility and order validation through rental billing, audits and reporting, with enrollment and credentialing in the same system.
- Insurance verification and eligibility checks
- Charge entry and specialty-specific coding review
- Claim scrubbing and electronic submission
- Payer follow-up on every open claim
- Denial management and appeals
- Payment posting and reconciliation
- Accounts receivable recovery
- Patient statements and balance support
- Monthly reporting you can read in five minutes
- Provider credentialing and payer enrollment
DME billing questions
When should we add KX to a DME claim?
Only when the record documents every coverage criterion in the LCD for that item, such as the sleep study and compliance data for CPAP or the mobility evaluation for a power wheelchair. Adding KX without support turns a denial into an audit finding, so we verify the file before applying it.
Why does the DME MAC keep sending documentation requests?
Pre-payment and post-payment reviews target high-risk categories like oxygen, PAP and power mobility. Responses need the order, medical records, delivery proof and any test results within the deadline. We assemble the packet from the intake file and track every request to closure.
How do you handle a patient who switches to Medicare mid-rental?
A new payer starts a new rental period, and Medicare requires its own order and documentation regardless of what the prior plan accepted. We obtain fresh documentation, verify same-or-similar history and restart the capped rental count so months are not lost.
How do we get started with Core MB for DME billing?
Tell us your product categories, payer mix and monthly order volume through the quote form and we will respond with a written proposal. Transitions run alongside your current billing so rentals keep cycling, and supplier enrollment or credentialing can start at the same time.
More in facilities and ancillary care
DME claims built on documentation that holds up
Tell us what you supply and we will show how Core MB manages orders, authorizations and rental cycles so claims pay and audits close cleanly.