Durable Medical Equipment Reference List — NCD 190 | CMS Coverage Update

TL;DR: The Centers for Medicare & Medicaid Services modified NCD 190, the Durable Medical Equipment Reference List, effective March 7, 2026. Here's what DME billing teams need to know before submitting claims.

This update to NCD 190 Medicare's foundational DME coverage reference affects how A/B MACs (HHH) and DME MACs process claims across a wide range of equipment categories. The policy does not list specific CPT or HCPCS codes — coverage status is determined by equipment category, medical necessity criteria, and MAC-level judgment. If your team handles durable medical equipment billing, this policy governs whether a claim gets paid or denied.

Quick-Reference Table

CMS Durable Medical Equipment Coverage Criteria and Medical Necessity Requirements 2026

The CMS DME coverage policy under NCD 190 is built around a specific legal definition of durable medical equipment. That definition comes from 42 CFR §414.202, and it's the first filter every claim goes through.

To qualify as DME under Medicare, an item must meet all five criteria. It must withstand repeated use — meaning it could be rented to successive patients. For items classified as DME after January 1, 2012, it must have an expected life of at least three years. It must be primarily and customarily used to serve a medical purpose. It must generally not be useful to a person without illness or injury. And it must be appropriate for use in the patient's home.

Miss any one of those five criteria and you don't have a covered DME item — full stop. Medical necessity at the patient level is a separate question, and both have to be satisfied before reimbursement is on the table.

How the Reference List Works in Practice

The NCD 190 reference list is organized into two columns. The first column lists generic equipment categories alphabetically. The second column notes coverage status. For covered categories, the list either spells out the conditions of coverage or points to another section of the Medicare manual where those criteria live.

For non-covered categories, the list gives a brief explanation of why the item doesn't qualify. Think of it as a quick-reference triage tool — it tells your billing team whether to pursue a claim or stop before wasting time on a denial.

The A/B MAC (HHH) and DME MACs use this list to process claims. When a MAC receives a claim for an item that doesn't fit neatly into any listed category, the MAC has the authority — and the responsibility — to make its own coverage determination. That determination has to account for three things: guidance from the Medicare Claims Processing Manual (Chapter 20, DMEPOS), FDA marketing approval and general safety/effectiveness, and whether the item is reasonable and necessary for that specific patient.

Prior Authorization and MAC-Level Discretion

NCD 190 doesn't establish a blanket prior authorization requirement for all DME categories. But prior authorization requirements can apply at the MAC level or under other NCDs that this reference list points to. If your equipment category cross-references another NCD or LCD, check that document for prior auth requirements before you bill.

The real issue here is that MAC discretion cuts both ways. A MAC can cover an unlisted item if it meets the DME definition and medical necessity criteria. It can also deny an item that appears to fit a covered category if the patient-level medical necessity documentation is weak. Your documentation has to support both the category and the individual patient's need.

CMS Durable Medical Equipment Exclusions and Non-Covered Indications

NCD 190 establishes that some equipment categories are simply not covered as DME under Medicare. The list includes brief explanations for each non-covered category. The most common reasons are:

The item doesn't meet the statutory DME definition — often because it's a supply or disposable rather than durable equipment. The item is primarily useful to a person in the absence of illness or injury, which disqualifies it from the benefit category. Or the item isn't appropriate for home use, which excludes hospital-grade equipment that requires clinical supervision to operate safely.

The policy is clear that this list is not exhaustive. CMS will update it as new NCDs are made. If you're billing for newer equipment categories — especially items classified as DME after January 1, 2012 — double-check the three-year expected life requirement. That was a post-2012 addition and it catches a lot of teams off guard on newer technology.

Coverage Indications at a Glance

The NCD 190 reference list doesn't enumerate individual clinical indications the way a narrower NCD does. Instead, it organizes coverage by equipment category. The table below reflects the coverage framework CMS uses under this policy.

CMS Durable Medical Equipment Billing Guidelines and Action Items 2026

Here's what your billing team should do before and after the effective date of March 7, 2026.

The real risk here is claim denial driven by documentation gaps, not coverage gaps. CMS isn't narrowing coverage with this modification — it's maintaining and updating the reference framework. If you're seeing denials, the problem is almost always that the medical necessity and DME definition documentation didn't hold up, not that the item is categorically excluded.

CPT, HCPCS, and ICD-10 Codes for Durable Medical Equipment Under NCD 190

The NCD 190 policy does not list specific CPT, HCPCS Level II, or ICD-10-CM codes in this version of the policy. Coverage is determined by equipment category and the criteria framework described above, not by a fixed code list.

This is intentional. The reference list is designed to cover a broad range of equipment categories, with each category potentially mapping to multiple HCPCS codes. The applicable HCPCS codes for specific DME items are assigned by the DME MAC fee schedule and through the DMEPOS benefit category classifications — not within NCD 190 itself.

What this means for your billing team: You cannot look up a single code in this policy and confirm coverage. You need to confirm the equipment category, verify the item meets the DME definition, check the referenced NCD or LCD for that category, and then confirm the appropriate HCPCS code through your DME MAC's fee schedule and billing guidelines.

If you're unsure which equipment categories your HCPCS codes fall under, start with Chapter 20 of the Medicare Claims Processing Manual (DMEPOS). That's the primary reference the MACs use, and it maps codes to categories.