Provider verification should establish the patient's coverage for the planned date of service, identify the correct payer and separate enrollment from service-specific coverage. An active Medicare record does not automatically authorize a procedure or guarantee payment.
Use an authorized eligibility channel
CMS's HIPAA Eligibility Transaction System uses 270 inquiries and 271 responses for authorized providers, suppliers and billing representatives. It is not a public search tool. Use the current CMS companion guide and your approved vendor or contractor process rather than a generic website form.
| Check | Reason |
|---|---|
| Identity and Medicare identifier | Resolve mismatched records accurately. |
| A and B entitlement dates | Confirm the relevant service date. |
| Private plan enrollment | Determine whether to contact Medicare Advantage or another payer. |
| Other insurance | Review coordination and primary-payer responsibility. |
| Service requirements | Check medical necessity, frequency, referral or authorization separately. |
If the response is unsuccessful
Check the actual rejection or error, entered identifiers, request date and authorized access. A failed transaction is not evidence that the patient has no insurance. Ask the patient for current cards through a secure process and escalate through the approved help channel if the mismatch remains.
For a Medicare Advantage service, confirm the plan's provider network and authorization requirements. A response about Original Medicare entitlement does not replace that step.
Keep documentation useful and private
Record the verification date, relevant response and follow-up in the permitted practice system. Restrict access; do not put Medicare numbers, Social Security numbers or login codes into public comments or unsecured email. Explain any unresolved coverage question to the patient without promising that an estimate is a final claim decision.
Related coverage questions
- How to Verify Your Medicare Coverage and Plan Enrollment
- Your Medicare Card: Replacement and Safe Use
- A Medicare Medical Claim Was Denied: What to Do Next