Medicare home health overlap recoupments: why PT clinics keep getting hit

You keep getting hit because the home health episode was not in Medicare's system on the day you checked. Home health agencies post their episodes late, sometimes weeks late, and Medicare reconciles the overlap months after your Part B visit already paid. By the time the recoupment letter lands, the check you ran at intake is long stale and the agency's episode has been backdated over your dates of service.

That is the whole mechanism. Everything below follows from it: why a check at intake is not enough, why the agency's own answer cannot be trusted, and why the record of what Medicare showed on the day of the visit is the only thing that wins the appeal.

The version of this that came up recently

A practice owner in a Facebook group for cash-based practices that bill Medicare put it this way:

"We keep getting hit time and time again with Medicare A recoupments. It adds up to thousands of dollars per year."

Their system is the one most clinics run. Ask the patient at intake whether any homecare agency is involved. If so, call the agency and wait for a discharge summary before starting Part B. Then the gap, in their words:

"We are not checking throughout the plan of care. We have way too much volume to be checking Medicare patients every day or even every week. I would need a full-time admin just to do that."

On one case, the agency said it billed Medicare Part B. It was actually billing Part A. The practice lost $1,100 on that patient. The post closed with what is really a request for this article: "I'm curious what people's systems are to manage this in their company."

Why the overlap costs you the whole visit

Under Medicare, when a patient is inside an active home health episode, therapy is covered through the home health benefit, not separately under Part B. The agency receives a bundled payment that is expected to cover the therapy the patient needs during that episode. If you bill an outpatient Part B visit inside the same window, Medicare pays it at first, then takes it back when the overlap reconciles. The takeback is the full allowed amount for every overlapping date of service.

Nothing about that is new to most Medicare practices. What gets missed is the timing. The episode is not necessarily visible on the day you treat.

Why checking at intake does not protect you

An intake check catches the episode that already exists and has already been posted. It misses two things.

• Episodes that open mid-plan. A patient can be admitted to home health three weeks into your plan of care, after a fall or a hospital stay. Your intake check was accurate when you ran it and useless a month later.
• Episodes posted late.The agency can start an episode and not have it in Medicare's system for weeks. On the day of your visit, an eligibility check shows nothing. When the agency finally posts, the episode is backdated over your visits.

This is why the owner above was still losing money with a reasonable intake process. The process is correct; it just runs once, and the risk runs for the whole plan of care.

What a check on every visit actually means

The protective version of the process is not complicated. It is just more frequent than anyone can staff by hand.

• Pull Medicare's eligibility record the day before each visit, not just before the first one. If an episode is open, the visit gets flagged before the patient walks in.
• Pull it again when the claim goes out. An episode that was posted between the visit and the claim is caught before the claim is, instead of months later.
• Look back a year for prior home health, not just the current window. A patient with recent home health history is the patient most likely to be readmitted mid-plan.
• Save the result of every check, with the date it was run. This is the part almost nobody does, and it is the part that matters most.

The owner in the thread was right that doing this by hand means a full-time admin logging into the MAC portal every morning. That is the honest cost of the manual version, and it is why most practices settle for the intake check and absorb the recoupments.

The appeal, and why the day-of-visit record is the whole case

When an agency posts its episode late and Medicare recoups a visit you had no way of knowing was inside that episode, the recoupment is appealable. The argument is simple: this home health episode was not in Medicare's system on the day of our Part B visit, there was zero way for us to check this, and we acted in good faith.

That argument only works with evidence. You need the eligibility response from the day of the visit, showing no open episode, with a timestamp. If you ran the check and did not keep it, or only ran it at intake, you have a claim with no proof behind it. If you ran it before every visit and saved every result, the appeal writes itself, and it goes out the day the recoupment letter arrives.

The short version

• Home health overlap recoupments happen because the episode was not visible on the day you treated. Agencies post late, and Medicare backdates.
• An intake check misses episodes that open mid-plan and episodes posted after your visit.
• The agency's answer about its own billing is not reliable. Medicare's eligibility record is.
• Check before every visit and again at claim submission, and save every result with its date.
• A late-posted episode is appealable on good faith, but only if you have the day-of-visit record to prove it.