Expired plans of care are a revenue struggle, not a paperwork issue

Why does an expired plan of care stop the money and not just the chart?

Because the visits keep happening and the claims cannot. A therapist sees the patient on Tuesday, charges post that night, and the claim sits in an unbilled bucket waiting on a signature that lives in somebody else’s office. Nothing about that is a documentation problem. It is a cash problem wearing a documentation costume.

Most practices never see it, because held charges do not appear on an AR ageing report. They are not denied and not paid, so they sit outside the report every manager actually reads. In our billing reviews, 27% of total AR sat past 90 days in the average practice reviewed, and the certification-held charges were not even in that number. They were behind it.

The reframe matters because it changes who owns the problem. Treated as paperwork, certification belongs to the therapist and gets chased between patients. Treated as revenue cycle management, it belongs to whoever owns unbilled AR, gets a report, and gets worked daily like any other hold.

What are the Medicare plan of care requirements for physical therapy certification?

Medicare Part B pays for outpatient therapy under a written plan of care that a physician or non-physician practitioner has certified. Four deadlines drive everything downstream.

Physical therapy plan of care requirements: what the document has to contain

CMS requires the plan to carry the diagnoses, long-term treatment goals, and the type, amount, frequency and duration of the services, plus the signature, professional identity and date of whoever established it. A physician, an NPP or a qualified therapist may develop the plan. In a comprehensive outpatient rehabilitation facility, only a physician may establish it. A plan missing long-term goals is a plan that fails on review even when the signature is perfect.

The 30 day initial certification clock

Certification is timely when the physician or NPP approval is documented, by signature or verbal order, and dated within the 30 days following the first day of treatment. Thirty calendar days, counted from the first treatment date, not from the evaluation note or the referral. A verbal order buys time but does not close the loop: it has to be signed and dated within 14 days.

Medicare recertification for physical therapy: the 90 day clock

Recertification is required in intervals that do not exceed 90 calendar days after the initial treatment day. CMS words it as timely when dated during the initial plan of care or within 90 calendar days of it, whichever is less. That last clause is the one clinics miss. If the plan itself says eight weeks, the plan expires at eight weeks, not at day 90.

Delayed certification and the 30 day grace that follows

A late certification is not automatically a lost claim. CMS accepts delayed certification when the physician or NPP certifies at a later date and includes a reason for the delay, and certifications are acceptable without justification for 30 days after they are due. Past that, the reason has to be written down. Practices that never document the delay reason are giving away claims that the rule was written to protect.

The same verification discipline that catches a coverage change mid-episode catches a lapsing certification, which is why eligibility and prior authorization work sits next to certification tracking rather than apart from it. In our billing reviews, 33% of therapy episodes had a coverage change mid-episode that was not caught. The two lists are worked by the same person for a reason.

Does the 2025 certification exception mean you can stop chasing signatures?

No, and reading it that way is how practices end up with unsupported claims. For dates of service on or after 1 January 2025, CMS added an exception to the signed certification requirement when three conditions are all met: the patient was referred by a physician or qualified NPP, a signed and dated order or referral is in the medical record, and there is evidence the plan of care was submitted to the referring provider within 30 days of the initial evaluation.

Read the third condition again. The exception does not remove the 30 day clock, it moves what the clock is measuring. You still have to prove you sent the plan, on a date, to a named provider. A fax confirmation, a portal message receipt or a dated transmittal log is the evidence. Practices with no record of sending have no exception, only an uncertified plan.

It also does nothing for direct access patients with no referral, and nothing for recertification. The 90 day interval stands.

How long do held therapy charges sit, and when does the money stop being recoverable?

Longer than anyone guesses, and the answer tracks almost entirely with whether a human being owns the list. In our client data, certification-held therapy charges sat a median of 34 days before release where no owner was named, against 9 days with a dated worklist. Phone calls alone landed at 27 days, a shared spreadsheet at 18.

The chart above compares four setups: no owner named at 34 days, phone calls only at 27, a shared spreadsheet at 18, and a dated worklist with a named owner at 9.

The hard stop is timely filing. Medicare claims must be filed no later than one calendar year from the date of service, and a claim denied for timely filing has no appeal rights. That is the collision nobody on the first page of Google does the arithmetic on: the 30 day certification grace is generous, the 12 month filing limit is not, and a certification that comes back in month 13 buys you a compliant chart and a worthless claim. Our claim audit puts timely filing behind 6% of denials, and only 4% of those were recovered.

Held charges also decay in a second, quieter way. The longer they sit, the more likely they are to be written into a contractual adjustment by someone clearing a stale bucket. In our billing reviews, 19% of denied claims were never reworked or appealed at all. Held charges never reach denial status, so they get even less attention than that. This is the work that belongs in denials and AR recovery rather than on a therapist’s afternoon.

What does a lapsed certification cost a four-therapist clinic?

Take Ridgeline Physical Therapy: four therapists, $140,000 a month in collections, 62% of it Medicare Part B. That is $86,800 a month in Medicare revenue. The average episode runs 8 visits at roughly $92 allowed, so about $736 an episode and about 118 Medicare episodes a month.

Our claim audit found plan of care certification unsigned past 30 days on 7% of Medicare episodes. Apply that to Ridgeline and 8 episodes a month cross day 30 with no signature. By the time the lapse is noticed, a median of 5 visits are already dated and sitting unbilled, which is $460 an episode. Eight episodes at $460 is $3,680 held at any point in the month, and about $44,160 cycling through held status across a year.

Now apply the leak. In our claim audit, 11% of certification-held therapy charges were never released before the 12 month filing limit. That is $405 a month and $4,860 a year, gone with no denial to appeal and no code to report.

With no tracker, Ridgeline holds $3,680 at day 30, releases $1,840 by day 60 and writes off $405 a month. With a dated worklist, the held balance drops to $1,150, $3,450 releases by day 60 and the write-off falls to $45.

The gap between those two columns is $360 a month, or $4,320 a year, at one four-therapist clinic. It costs nothing but a saved report and a named owner. If you want the same arithmetic run against your own numbers, that is what a free billing review produces.

How do you build a certification tracker that actually releases charges?

Every competing page on this topic ends at stay on top of it. Here is the setup, in the order it gets built.

1. Pull one report of every active Medicare Part B therapy episode with three date fields: first treatment date, certification signature date, recertification due date. If your system cannot produce those three fields together, that is the first thing to fix.
2. Add two calculated columns: days since first treatment, and days remaining to the 90 day recertification date or to the plan’s own stated duration, whichever comes first.
3. Sort on days since first treatment, descending. Anything past day 20 with an empty signature date belongs on today’s list, which gives you 10 days of runway before the rule bites.
4. Name one owner. Not a role, a person. In our practice manager survey, 42% said nobody owns denial follow-up full time, and certification follow-up is usually owned even less clearly than that.
5. Run a fixed escalation ladder rather than ad hoc calls: portal or fax on day 7, phone the referring office on day 14, therapist to physician directly on day 21, practice manager on day 25.
6. Hold the charges in their own unbilled bucket with a visible dollar total, separate from general AR. A balance nobody can see is a balance nobody works.
7. Release the whole episode the same day the signature lands. Held charges that release in batches every two weeks give back half the benefit of catching them early.
8. Review the held bucket weekly against the 12 month filing clock, oldest first, and file the delay reason with the certification whenever it comes back late.

Steps four and five are administrative work, not clinical work, which is why practices increasingly hand them to a trained medical virtual assistant rather than a therapist between patients.

Which denial codes tell you certification is the problem?

CMS publishes therapy-specific reason codes, and they are precise enough to tell you exactly which clock was missed. TP003 flags an initial plan of care not certified by the physician or NPP. TP007 flags a plan not recertified within the duration of the prior plan or within 90 days, whichever is less. TP004 flags a delayed or lapsed recertification with no supported reason. TP001 flags a plan not established and signed by a qualified clinician. TP000, TP002 and TP005 cover a missing plan, a missing approval and missing diagnoses or long-term goals.

Across the denied therapy claims in our audit sample, TP003 accounted for 448, TP007 for 366, TP004 for 224 and TP001 for 142, out of 1,180 certification denials.

Two of those four are recertification failures, not initial certification failures, which is the opposite of where most clinics put their attention. Mapping each code to the specific clock it represents, rather than filing them all as documentation, is medical coding work with a direct cash payoff.

What are the most common certification mistakes that hold charges?

Eight recur in nearly every therapy billing review we run.

• Counting the 30 days from the evaluation date or the referral date instead of the first day of treatment.
• Taking a verbal order and never closing it with the signature inside 14 days.
• Counting the 90 day recertification interval from the certification signature date rather than the initial treatment day.
• Letting a plan with a stated duration shorter than 90 days run past its own end date.
• Sending a stamped signature, which Medicare does not accept, when an electronic signature would have been fine.
• Submitting the claim with a missing or incorrect certifying NPI.
• Getting the late certification back and never writing down the reason for the delay.
• Clearing stale held charges into a contractual adjustment bucket, which hides the loss instead of reporting it.

Therapy practices already carry more timing rules than most specialties, between the certification clocks, the KX threshold and the timed-code arithmetic covered in our guide to the 8-minute rule in physical therapy billing. The certification clocks are the ones with no partial credit: the unit math can be corrected and rebilled, an expired plan of care cannot be corrected backwards once the filing year closes.

Should certification follow-up stay in-house or move to a billing partner?

Three setups are common, and they fail in different places. The honest comparison is what each one catches, how fast it releases the money, and what it costs.

Outsourcing is one option, not the answer. A practice with a named owner, a dated worklist and a visible held balance gets the same 9 day release without paying a percentage. The case for a partner is strongest when the same team also works the denials the lapses produce, which is what full-service medical billing covers. Ask any candidate to show you the certification expiry report before you sign, not after.

Physical therapy

The highest-volume version of this problem, because PT carries the longest episodes and the most direct access patients. The 2025 exception helps referred patients and does nothing for direct access ones, so PT clinics need two lists, not one. The KX threshold at $2,480 for PT and SLP combined in CY2026 adds a second document trail on the same episode, and our claim audit found the KX modifier missing on 21% of Medicare therapy claims past the threshold. See our physical therapy billing page for the full code and modifier set.

Occupational therapy

OT runs the same 30 and 90 day clocks with a separate KX threshold, also $2,480 for CY2026, tracked independently of the PT and SLP pool. The common failure is a patient receiving PT and OT concurrently under two plans with two different first treatment dates and two different recertification dates, tracked as one episode. Our occupational therapy billing work splits the tracker by discipline for exactly this reason.

Speech-language pathology

SLP shares the KX threshold pool with PT, which means an SLP episode can push a PT episode past the threshold mid-plan without either therapist seeing it. Episodes are often shorter than 90 days, so the plan’s own stated duration, not the 90 day ceiling, is usually the binding date. That is the whichever is less clause doing real damage. Our speech therapy billing team tracks the stated duration as the primary field.

Home health

Home health runs on a different instrument, the CMS-485 home health certification and plan of care, with a 60 day episode rather than 90 and a face-to-face encounter requirement attached to the certification. Late notices of election and admission caused 11% of hospice and home health payment losses in our billing reviews. The tracking principle transfers directly, the dates and the form do not.

Behavioral health

Outpatient behavioral health has no equivalent certification clock under Part B, but it has the same structural trap: authorization units that expire mid-episode with charges already dated. Solo therapists carried a median 41 days in AR against 29 for group practices in our billing reviews, and the gap is mostly unworked holds. Treat authorization expiry exactly like certification expiry, on the same worklist with the same owner.

Primary care and ambulance

Primary care meets this rule from the other side, as the referring office sitting on unsigned therapy plans in a physician inbox. Turning that around is worth doing, because the same office loses money to its own timing failures, with chronic care management time uncaptured for 58% of eligible patients. Ambulance services face the closest parallel in the Physician Certification Statement, missing or unsigned on 18% of non-emergency transports in our claim audit. Different form, same held charge.