DME Prior Authorization 2026: CMS Changes Suppliers Need to Know

This year, CMS updated its DME prior authorization rules not once but twice. The first round took effect in April, and a second bigger round is coming in October. On top of that, the new exemption program launched by CMS that lets some suppliers skip prior authorization altogether can be confusing for many.

If your team is still working off the April update, you’re already behind and need a proper fix for your DME billing services.

DME Billing: What Has Changed, What’s Next, and How to Prepare

If you are running a Durable Medical Equipment business, it is better to know all the recent updates and changes to come that can impact your DME billing reimbursement. Here’s a complete picture of what’s changed in 2026, which codes are affected, and what needs to happen on the intake and billing side to avoid denials.

Related Reading: Sunknowledge Delivers Customized DME billing and Coding Solutions

Three Lists, Not One

CMS maintains three related but distinct lists, and mixing them up is one of the most common sources of missed requirements:

• Master List — a library of DMEPOS codes CMS has flagged as potentially vulnerable to fraud or unnecessary utilization. As of October 28, 2026, it includes 550 items. Being on the Master List alone does not create any obligation for suppliers.
• Required Prior Authorization List — the subset of Master List items CMS has activated for mandatory prior authorization as a condition of payment. This is the list that has grown from 67 to 82 items in 2026.
• Required Face-to-Face Encounter and Written Order Prior to Delivery (F2F/WOPD) List — a separate condition of payment requiring a documented encounter and a signed order before delivery. As of October 28, 2026, this list still stands at 105 items.

While an item can appear on one required list, both, or neither. Intake teams need to check both lists for every affected code; satisfying one requirement doesn’t excuse the other. An item can be on one list, both, or neither. And a DME claim can fail anytime if not managed properly. See how to bill DME claims to know more. 

Why this matters for claims is that required prior authorization and F2F/WOPD are both Medicare conditions of payment for the items on those lists. A claim that doesn’t satisfy the applicable requirement may not be eligible for payment, subject to CMS’s rules and any applicable exceptions or suspensions.

April 13, 2026: The First Expansion of the DME List

CMS published its first 2026 update in the Federal Register on January 13, 2026, with changes effective April 13, 2026. Seven HCPCS codes were added to the Required Prior Authorization List, taking it from 67 to 74 items. Five of the seven are orthotic (“L”) codes; two are pneumatic compression device codes.

The same notice added eight oxygen and oxygen-delivery-system codes to the F2F/WOPD list, nationwide, effective the same day. For applicable items, the treating practitioner generally has to complete the face-to-face encounter within the six months preceding the written order, and the complete order has to reach the supplier before delivery.

June 1, 2026: A New Exemption Pathway that DME Providers Need to Know

The part of the 2026 changes that gets the least attention may matter the most to compliant suppliers. CMS finalized a prior authorization exemption process, CMS-1828-F, issued December 2, 2025. Suppliers who demonstrate strong billing compliance can be exempted from the required prior authorization step altogether.

• Suppliers achieving a provisional affirmation rate of 90% or higher on their prior authorization requests may qualify.
• DME MACs notified qualifying suppliers by April 2, 2026.
• The first annual exemption cycle runs June 1, 2026 through May 31, 2027, with subsequent cycles following the same June–May calendar.
• Exemption is evaluated per supplier PTAN and jurisdiction a supplier has to qualify separately in each.
• Exempt suppliers are still subject to post-payment review of a sample of claims; falling below the required approval rate, or exceeding a 10% non-payable claims rate, can result in withdrawal of the exemption, with at least 60 days’ notice.
• Suppliers can opt out of the exemption and continue submitting standard prior authorization requests if they prefer.

For suppliers with clean documentation and a strong PA track record, this is worth pursuing it removes a step from an already document-heavy process. For everyone else, it’s a reason to treat prior authorization accuracy as a metric worth tracking, not just a per-claim task.

July 30, 2026: A Second Expansion for October

CMS wasn’t finished. A July 30, 2026 notice (see CMS’s Prior Authorization Process for Certain DMEPOS Items page for the current timeline) added eight more HCPCS codes to the Required Prior Authorization List, bringing the nationwide total to 82 items as of October 28, 2026.

The two upper-limb orthoses, L3761 and L3916, are the exception to the nationwide-on-day-one pattern that defined the April update they roll out in phases over roughly six months. Suppliers billing these codes need to confirm current implementation status by state rather than assuming the April rollout pattern applies. The July notice also expanded the F2F/WOPD list further, bringing it to 105 items total, while confirming the 74 codes added in April remain in effect uninterrupted.

Why Orthoses Keep Showing Up

The heavy weighting toward orthotic codes across both 2026 updates isn’t random. CMS’s Comprehensive Error Rate Testing (CERT) program has repeatedly flagged orthoses among the DMEPOS categories most associated with improper payments with improper payment rates for orthoses reported in the 35–58% range in recent years, and projected improper payments in the tens of millions of dollars. CMS has also pointed to prior enforcement actions against DMEPOS companies for medically unnecessary bracing as part of the rationale for continued scrutiny.

Suppliers billing meaningful volume in orthotics should treat this pattern as reason to monitor future Required List updates closely; CMS’s own data points to continued focus on this category, even if the exact scope of the next round isn’t predictable in advance.

What Provisional Affirmation and Non-Affirmation Actually Mean

A prior authorization request doesn’t come back as a simple approve/deny. CMS or its contractor reviews the submitted documentation against applicable coverage, coding and payment requirements and returns one of two outcomes:

• Provisional affirmation — the documentation supports the applicable requirements. This isn’t a payment guarantee, but it clears the item to move forward toward delivery and claim submission.
• Non-affirmation — the documentation doesn’t support the requirements as submitted. The next step is identifying the specific deficiency, correcting it, and resubmitting, not delivering the item and hoping the claim clears anyway.

CMS currently ensures up to seven calendar days for a standard prior authorization decision and up to two business days for a qualifying expedited request. Building that turnaround into scheduling rather than treating it as a formality is what keeps delivery dates from slipping.

What DME Suppliers Should Do Now

• Cross-check your active code list — Compare current billing codes against the October 28, 2026 Required Prior Authorization List and F2F/WOPD List, not just the April version. CMS’s lookup tool on the Prior Authorization and Pre-Claim Review Initiatives page returns current status by HCPCS code and state.
• Confirm your exemption status — If your practice submitted at least 10 initial PA requests in the relevant review window, check whether you qualified for the June 2026 exemption cycle — and whether opting in or out makes sense for your workflow.
• Verify implementation status by code, not by assumption — With L3761 and L3916 on a phased rollout, a workflow built around “everything goes nationwide immediately” can miss a state-specific gap.
• Confirm the written order has every required element before delivery — Beneficiary name or MBI, item description, quantity where applicable, treating practitioner name or NPI, order date, and practitioner signature.
• Flag orthotic and respiratory equipment — Give all claims for these categories a second look before submission; they carry the most exposure under the 2026 updates.
• Build turnaround time into scheduling — Seven calendar days standard, two business days expedited; plan delivery dates accordingly rather than treating review time as an afterthought.

Common Mistakes That Trigger Denials

• Outdated internal code lists — lists that haven’t been checked against the current Required List since an earlier 2026 update need to be checked.
• Treating F2F/WOPD as interchangeable with prior authorization — they’re separate requirements, and a claim can satisfy one while failing the other.

DMEPOS prior authorization in 2026 isn’t a single update, it’s an ongoing compliance cycle. CMS added seven Required Prior Authorization codes and eight F2F/WOPD codes in April, opened an exemption pathway for high-compliance suppliers in June, and added eight more Required Prior Authorization codes in July for October implementation. Suppliers who build a recurring monthly cross-check into their intake process, rather than reacting each time CMS issues a new notice, are the ones who keep claims clean as the lists continue to grow.

This kind of ongoing list-tracking is exactly the workload SunKnowledge takes off a supplier’s plate as part of its DME billing services. From monitoring every CMS update, filing, tracking prior authorization requests and keeping written orders to F2F documenting audit-ready before a claim ever goes out the door we do it all.

Related Reading: How to Reduce DME Billing Denials Through Better Documentation

Let Our DME Billing Team Handle the Prior Authorization Workload

In short, SunKnowledge’s DME billing specialists track every Required Prior Authorization and F2F/WOPD update as it’s published, manage submissions and resubmissions, and keep documentation aligned with current CMS requirements so your team isn’t cross-checking code lists between patient visits. Talk to a DME billing specialist today and get your authorization challenges fixed.

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