Documentation After CMN & DIF

DME Billing • 2026 Guide What US DME suppliers should verify before a Medicare claim leaves the billing queue. Accurate DME billing documentation connects the practitioner’s order, the medical record, delivery evidence and the submitted claim. When one element conflicts with another, suppliers can face avoidable rejections, documentation requests or denials. For Medicare dates of service on or after January 1, 2023, suppliers should not submit Certificates of Medical Necessity or DME Information Forms. CMS now relies on information in the claim and medical record. Older dates of service may still follow the prior requirements. The Standard Written Order contains the beneficiary, item, quantity when applicable, practitioner, order date and signature elements. Face-to-face, written-order-prior-to-delivery and prior-authorization rules are checked for the specific item. Proof of delivery identifies the delivered item and supports the billed date of service. The HCPCS code, modifiers, rental or purchase status and medical record tell the same story. Use the commercial service page when evaluating an outsourced workflow, and the compliance guide when investigating recurring DME claim denials. Explore DME billing services Read the DME billing denials guide Browse medical billing Web Stories Educational content only. Confirm current CMS, DME MAC and payer-specific requirements for each item.

Do not submit CMN or DIF for current claims

Critical CMS change For dates of service on or after January 1, 2023, Medicare no longer accepts CMN or DIF forms with DME claims. CMS states that claims containing these forms or their electronic data elements may be rejected and returned. Source: CMS MLN SE22002. Payer and item-specific rules still apply. Read the CMS update

Start with a complete Standard Written Order

Step 1 • Order accuracy Beneficiary name or Medicare Beneficiary Identifier Clear item description and quantity, when applicable Treating practitioner name or NPI Order date and practitioner signature The complete order must reach the supplier before the Medicare claim is submitted.

Every claim needs a traceable documentation path

Step 2 • Build the chain Qualifying face-to-face encounter, when required SWO and written order prior to delivery, when applicable Medical record supporting coverage and medical necessity Proof of delivery that matches the item and service date

A valid order does not fix a mismatched claim

Step 3 • Modifier control Before submission, align the HCPCS code and modifier selection with the item, coverage policy, rental or purchase status, and supporting record. HCPCS match Payer policy Rental cycle Medical record Service date Verify current payer and DME MAC guidance; modifier requirements can be item-specific.

DME denial-prevention checks

Pre-submission scrub 5 Order date and signature are complete Item description and quantity match the claim F2F or WOPD requirements are satisfied Proof of delivery is retrievable HCPCS, modifier and service date agree

A dedicated DME billing team catches gaps earlier

Operational advantage Monitor payer updates, flag missing documentation, track rental and resupply cycles, and work denials with a consistent workflow.

Audit your DME claim workflow

Next step Find order, delivery and claim-data gaps before they become avoidable denials. Explore ICS DME billing support for US suppliers and healthcare organizations. DME Billing Services ← More Medical Billing Stories Educational content only. Confirm current CMS, DME MAC and payer-specific requirements for each item. Explore DME billing support

Documentation After CMN & DIF

DME Billing Documentation Guide

CMN and DIF rules changed

What should the billing team verify?