The CMS Medicare Coverage Database contains national and local coverage policies and related documents. It can help explain why a service has particular requirements. It is not a plan-shopping website or a guarantee that an individual claim will be paid.
Understand the document type
| Document | Meaning |
|---|---|
| National Coverage Determination, NCD | CMS policy that grants, limits or excludes coverage nationally for a service or item. |
| Local Coverage Determination, LCD | Contractor policy about reasonable and necessary services in its jurisdiction; it cannot contradict an NCD. |
| Billing and coding article | Additional guidance, often linked to a policy, about accurate claim submission. |
| Proposed or retired document | Not automatically the rule currently governing your service. |
Search in a useful order
- Ask the provider for the service name, relevant code or policy identifier.
- Open the official CMS database and search that information.
- For local policies, check the contractor and geographic jurisdiction.
- Check status, version and effective dates against the date of service.
- Read the actual indications, limitations and linked documents.
A search-result title or code match is not enough. A policy can cover a service only for specific circumstances. Absence of an NCD is not automatically a national exclusion; other Medicare rules and local review can apply.
Using the National Coverage Determinations Manual
The manual contains national policies, but an old PDF labeled with a past year may not reflect later changes. Find the relevant policy’s current or date-appropriate version. Do not treat the manual as a complete annual catalog of benefits for every Medicare Advantage plan.
Bring the result back to your provider
Ask which requirement applies to your case and what documentation supports it. Let the billing team select truthful codes from the clinical record; do not choose a diagnosis simply to obtain coverage.
A policy lookup is separate from an individual coverage or payment decision. If a claim is denied, use the instructions in the Medicare Summary Notice or plan decision. Disagreeing with a policy and appealing a personal claim have different processes. For help interpreting a notice, contact Medicare, your plan or SHIP.
Related coverage questions
- A Medicare Medical Claim Was Denied: What to Do Next
- How to Verify Your Medicare Coverage and Plan Enrollment
- Medicare Part B: Medical Coverage, Costs and Enrollment