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02The claim

Medicare billing services

Medicare billing services get Original Medicare Part B claims paid by your Medicare Administrative Contractor and keep them paid: PECOS enrollment and revalidation kept current, other coverage checked under the Medicare Secondary Payer rules, an ABN on file when Medicare is expected to deny, the claim sent as an 837P, the 835 posted, and a redetermination filed inside Medicare's 120-day window when a claim is denied.

Enrollment, MSP and appeal deadlines reviewed. No patient data needed.

Medicare Advantage plans run on their own contracts and appeal rules, and we bill those separately.

This is part of getting the claim out clean. Buy it on its own or pair it with our other billing services, stage by stage.

Last reviewed by the Remitwright billing team. Editorial policy

Stage 02 of 04

  1. Before the visit
  2. The claim
  3. After the claim
  4. Oversight

What we do

What Medicare billing covers

  • PECOS enrollment, reassignments and revalidation tracked for every provider, with due dates taken from the CMS revalidation list, which CMS posts seven months ahead
  • EDI enrollment with your MAC so claims go electronically, as the ASCA condition of payment requires, and the 835 remit flows back into your system
  • Medicare Secondary Payer check at intake for employer coverage, liability, no-fault or workers' compensation, so the right payer is billed first
  • ABN (Form CMS-R-131) workflow for services Original Medicare is expected to deny, so liability can move to the patient and the claim is coded to match
  • Coverage checks before the claim leaves: the diagnosis supports the service, the frequency is allowed, and the documentation the policy asks for is in the chart
  • Claims filed well inside Medicare's one-calendar-year limit, with the exception cases (retroactive entitlement, contractor error) flagged and worked
  • Crossovers watched: when the Medicaid or supplemental share does not follow, the secondary claim goes out with the Medicare remit attached
  • Redeterminations on CMS-20027 or as a written request, QIC reconsiderations and OMHA hearing requests, each logged with its deadline
  • Medicare Advantage claims billed to the plan under its contract, with its Part C appeals tracked apart from Original Medicare's

When it is skipped

What goes wrong when Medicare billing is skipped

The revalidation notice that went to the old suite

CMS asks most providers to revalidate every five years (every three for DMEPOS suppliers) and sends the notice three to four months before the due date, to the contact information on file. A practice that moved never sees it. The due date passes, the MAC holds payment or deactivates billing privileges, and there is no payment for the gap.

Medicare billed first when it was second

A patient still covered by a spouse's employer plan is billed to Medicare as primary because nobody asked at check-in. Medicare pays, the other coverage is identified later, and recovery follows, while the primary claim may already be past that payer's filing window.

The service Medicare was always going to deny

A clinician furnishes a service Medicare is not expected to cover and nobody issues an ABN. The denial arrives as expected, and because the notice that transfers liability was never signed, the practice cannot collect from the patient either.

How we run it

How we run Medicare billing

  1. Enrollment check

    PECOS records, reassignments, revalidation due dates and EDI enrollment for every provider and location, fixed before anything else is billed.

  2. Front end

    Eligibility with the MSP questions asked, coverage policy checked for the services you bill most, and an ABN issued where Medicare is expected to deny.

  3. Claim

    The 837P goes to the MAC through your clearinghouse after a scrub against Medicare's edits, well inside the one-year filing limit.

  4. Remit

    The 835 is posted, CARC and RARC codes logged, crossovers checked, and denials handed to the appeals queue with their deadline.

  5. Appeal

    Redetermination first, then the QIC, then OMHA when the amount in controversy is met, each level logged with its filed date and expected decision date.

What you receive

What you receive every week

  • Enrollment and revalidation tracker

    Every provider, PECOS status, reassignment, revalidation due date and EDI status, updated as CMS posts new dates.

  • Weekly Medicare report

    Claims sent, paid and denied by CARC, MSP holds, crossovers pending, and open appeals by level with the next deadline on each.

  • Appeal log

    Each Medicare appeal with its level, form, filed date, the payer's stated decision window, and the outcome when it arrives.

Worked example · hypothetical

Worked example: a revalidation caught with seven weeks to go

A hypothetical internal medicine group with four physicians asks for a billing review. The enrollment check finds one physician on the CMS revalidation list with a due date seven weeks out and no notice in the practice's files: the correspondence address in PECOS is a suite the group left two years earlier. The revalidation goes in through PECOS with the address corrected in the same submission, the MAC's request for a copy of the license is answered, and billing privileges continue without a hold.

Questions

Questions about Medicare billing

Do you bill Medicare Advantage plans or only Original Medicare?

Both, but not the same way. Original Medicare claims go to your MAC and follow the CMS appeal levels. Medicare Advantage claims go to the plan under its contract, and its appeal and grievance rules sit under 42 CFR Part 422, Subpart M. The two queues are kept separate.

What is the timely filing limit for Medicare?

For services on or after January 1, 2010, the claim must be filed no later than the close of the period ending one calendar year after the date of service (42 CFR 424.44). The exceptions are narrow: administrative error by Medicare or its contractor, retroactive Medicare entitlement, retroactive entitlement where Medicaid recovered its payment, and retroactive disenrollment from a Medicare Advantage or PACE plan.

What happens if we miss Medicare revalidation?

CMS says a late revalidation can lead to a hold on Medicare payment or deactivation of billing privileges, and it does not grant extensions. A deactivated provider has to submit a complete new enrollment application, and nothing is paid for the inactive period. We take due dates from the CMS revalidation list rather than waiting for the letter.

How does a Medicare appeal work when a claim is denied?

Original Medicare has five levels. Redetermination by the MAC within 120 days of the initial determination, with no minimum dollar amount. Reconsideration by a Qualified Independent Contractor within 180 days of the redetermination. A hearing before OMHA within 60 days, where the 2026 amount in controversy is 200 dollars. Medicare Appeals Council review within 60 days. Then Federal district court, where the 2026 threshold is 1,960 dollars.

How do you know when Medicare is the secondary payer?

Coordination of Benefits rules decide which coverage pays first, and the Benefits Coordination and Recovery Center holds Medicare's record of a patient's other insurance. We ask the MSP questions at intake and check the eligibility response for other coverage before anything is billed.

Does Medicare require electronic claims?

Yes. CMS enforces the Administrative Simplification Compliance Act requirement that claims be sent to Medicare electronically as a condition of payment, so EDI enrollment with your MAC comes first.

Can a new physician bill Medicare before enrollment is approved?

For a short look-back only. Billing privileges start on whichever is later: the filing date of the application CMS approves, or the day the physician began seeing patients at that location (42 CFR 424.520). Claims may reach back 30 days from that start when something outside the practice's control delayed enrollment, or 90 days after a Presidential disaster declaration (42 CFR 424.521). File in PECOS before the first patient.

Can we outsource Medicare billing and keep commercial claims in-house?

Yes, by payer scope. Your biller works the Part B claims, MSP checks, ABN logic, revalidation dates and redeterminations while your staff keep the commercial queue, and the weekly report shows Medicare on its own line.

Next step

Enrollment, MSP and appeal deadlines reviewed. No patient data needed.

Three quick questions. No patient data. A billing specialist reads every request and replies in writing.

  • Three questions, about two minutes
  • No patient data, no software to buy
  • A written reply from a biller, not a sales deck

What happens next

  1. You answer three questions

  2. A billing specialist reads them

  3. A written reply by email

Prefer email? sales@remitwright.com

Check my Medicare setup

Enrollment, MSP and appeal deadlines reviewed. No patient data needed.

Step 1 of 3

What do you bill for?

A little about your volume
How many providers? (Medical practice)

Trips per month? (NEMT)

Active clients? (Home care / home health)

Orders per month? (DME)

How many clinicians? (Behavioral health / therapy)

Claims per month, roughly? (Something else)

What's the biggest problem right now?

Where should we send the review?

Add details (optional)

We work inside your system; this tells us which login to ask for.

Please don't include patient information in this form.

  • No patient data requested
  • No obligation
  • Reply in writing
Get a billing review
Billing review

Get a billing review

See where claims are getting stuck. No patient data needed.

Step 1 of 3

What do you bill for?

A little about your volume
How many providers? (Medical practice)

Trips per month? (NEMT)

Active clients? (Home care / home health)

Orders per month? (DME)

How many clinicians? (Behavioral health / therapy)

Claims per month, roughly? (Something else)

What's the biggest problem right now?

Where should we send the review?

Add details (optional)

We work inside your system; this tells us which login to ask for.

Please don't include patient information in this form.

  • No patient data requested
  • No obligation
  • Reply in writing

BAA signed before any access, a user you create, MFA on. Patient data stays in your systems. How access works