Therapy Plan of Care Certification: Medicare Rules for PT, OT & SLP in 2026.

Every Medicare therapy episode rests on one document: a certified plan of care. Get the certification right and your physical therapy billing flows and your care is defensible; miss a signature, a date, or a deadline and even medically necessary services can be denied. This guide breaks down therapy plan of care certification for physical therapy, occupational therapy and speech therapy — who certifies, the 30-day and 90-day deadlines, the new 2025 order/referral exception, required POC elements, and the documentation that keeps every episode audit-proof.

Therapy Plan of Care Certification at a Glance

A therapy plan of care (POC) is the written treatment plan that Medicare Part B outpatient physical therapy, occupational therapy and speech therapy services must follow. It can be established by a physician, non-physician practitioner (NPP), PT, OT or SLP, but it must be certified — signed and dated — by a physician or NPP. Initial certification is timely within 30 calendar days of the first treatment, and the plan must be recertified at least every 90 days.

Here is the core framework every PT, OT and SLP biller and clinician needs before an episode of care begins:

What Is a Therapy Plan of Care?

A therapy plan of care (also called a plan of treatment or POC) is the written document that outlines a patient's outpatient physical therapy, occupational therapy or speech therapy program. Medicare requires that services relate directly to this plan, that it be established before treatment begins, and that it record the diagnoses, long-term goals, and the type, amount, duration and frequency of therapy to be delivered.

The plan of care is the clinical and compliance backbone of the episode. A physician, NPP, PT, OT or SLP may establish it, and the signature, professional identity and date of whoever established it must appear on the plan. Everything that follows — your timed and untimed CPT codes, your units, your progress reports — has to trace back to this document.

What Is Plan of Care Certification?

Plan of care certification is the physician's or NPP's formal approval of the therapist-established plan, shown by a dated signature (or a timely verbal order later signed). Certification confirms two things Medicare requires for payment: that the patient is under the care of a physician or NPP, and that the therapy is medically necessary. Without valid certification, Medicare Part B can deny the claim even when the care itself was appropriate.

Certification is different from establishing the plan. A therapist can write the plan, but a physician or NPP has to certify it. In the absence of a separate certification document, a physician progress note indicating the provider reviewed and agreed with the plan can serve as certification. Stamped signatures are not accepted; handwritten and electronic signatures are.

Who Can Certify a Therapy Plan of Care?

Only a physician or a non-physician practitioner (NPP) can certify a therapy plan of care. For therapy services, "physician" means a doctor of medicine (MD), osteopathy (DO), podiatric medicine, or optometry (for low-vision rehabilitation only). NPPs include nurse practitioners (NP), physician assistants (PA) and clinical nurse specialists (CNS). Chiropractors and dentists cannot refer patients for therapy or certify therapy plans of care.

On the claim itself, the certifying physician's or NPP's name and NPI must appear in the ordering/referring provider field. If that information is missing or entered incorrectly, Medicare will deny the claim — a small data point that quietly drives a large share of avoidable denials.

Initial Certification: The 30-Day Rule

Initial certification of a Medicare therapy plan of care is timely when the physician or NPP signs and dates the plan within 30 calendar days of the first treatment day, including the evaluation. If a verbal order is used, the physician/NPP must sign and date it within 14 calendar days. The initial certification covers the stated duration of the plan, up to a maximum of 90 calendar days.

Because the plan of care must be established before treatment starts, the therapist should forward it to the certifying provider as soon as it's written. Evidence of diligence in sending the plan matters: if a claim is reviewed, a documented, dated transmission helps show the practice met its obligations. Practices that let signatures drift past day 30 without a delayed-certification reason are the ones that get burned in an audit.

The 2025 Order/Referral Exception (New)

For dates of service on or after January 1, 2025, CMS created an exception to the physician/NPP signature requirement for initial certification. A signed and dated order or referral can satisfy initial certification when (1) the written order or referral is in the patient's medical record, and (2) the therapist has documented evidence the plan of care was transmitted to the referring provider within 30 days of the initial evaluation. This exception applies to initial certification only — not recertification.

In plain terms, this ends the "second signature chase." When a physician already sent an order or referral, and you can show you sent the plan back within 30 days, silence from the provider now works in your favor — you don't have to obtain a separate signature on the plan itself for initial certification. It's a meaningful reduction in administrative burden for physical therapy, occupational therapy and speech therapy practices.

Recertification: The 90-Day Rule

Medicare requires the plan of care to be recertified — reviewed, dated and signed by a physician or NPP — at least every 90 days, or at the end of the certification period, whichever is less. Recertification is also required whenever the therapist significantly modifies the plan. Unlike initial certification, recertification always needs a physician/NPP signature; the 2025 order/referral exception does not apply to it.

Each recertification can cover up to another 90 days and must contain all the elements of the initial plan, plus any changed goals or an explanation of why the original goals weren't met in the first period. Recertification is an administrative requirement, not a clinical visit: it doesn't require a patient encounter and isn't separately billable.

What a Therapy Plan of Care Must Contain

At a minimum, a Medicare therapy plan of care must include the patient's diagnoses, long-term treatment goals, and the type, amount, duration and frequency of therapy services. It must also show the signature, professional identity and date of the person who established it. A referral or order only counts as a certifiable plan of care if it contains all of these required elements.

• Diagnoses — the medical diagnosis and the specific therapy problem(s) being treated.
• Long-term treatment goals — measurable, functional goals for the episode of care.
• Type of therapy — the interventions/modalities to be furnished (e.g., therapeutic exercise, gait training, dysphagia therapy).
• Amount, duration and frequency — how much therapy, how long the episode runs, and how often the patient is seen.
• Signature, identity and date — of the professional who established the plan.

Delayed Certification and Verbal Orders

Delayed certification is acceptable when the physician or NPP eventually certifies the plan and includes a reason for the delay; delayed certifications are accepted without further justification up to 30 days past the due date. Verbal orders for certification or recertification are allowed but must be signed and dated by the physician/NPP within 14 calendar days to remain timely.

Delayed certification is a safety valve, not a routine plan. Use it when a signature genuinely arrives late, document why, and keep the evidence in the chart. The cleaner your transmission records and reminder workflow, the less you'll ever need it — which is exactly where a purpose-built EMR earns its keep.

Plan of Care Certification for PT, OT and SLP

The certification framework is the same for physical therapy, occupational therapy and speech therapy — establish before treatment, certify within 30 days, recertify every 90 days — but each discipline carries its own therapy modifier on the claim: GP for physical therapy, GO for occupational therapy, and GN for speech-language pathology. These modifiers identify the plan of care the service falls under.

Accurate certification pairs with accurate coding: your timed vs untimed CPT codes and the 8-minute rule determine the units, while the certified plan of care establishes medical necessity behind them. Strong clinical documentation ties the two together, and a rehab-specific physical therapy software platform keeps PT, OT and SLP plans of care, modifiers and deadlines aligned through integrated RCM and billing.

Certification vs Recertification vs Re-Evaluation

Certification and recertification are administrative approvals of the plan of care by a physician or NPP; they confirm medical necessity, don't require a patient visit, and aren't separately billable. A re-evaluation is a clinical service performed by the therapist when there's a significant change in the patient's status — it's documented and separately payable (97164 for PT, 97168 for OT, and the 92xxx SLP codes). Don't confuse the two.

Certification Mistakes That Trigger Denials

The rules are learnable, but these plan of care errors still drive Medicare therapy claim denials, recoupments and audits:

• Missing or undated physician/NPP signature on the certification — a top CERT documentation error
• Letting the initial certification slip past 30 days with no delayed-certification reason on file
• Assuming the 2025 order exception covers recertification (it doesn't)
• Using a referral as the plan of care when it's missing required elements (goals, frequency, duration)
• Wrong or missing certifying-provider NPI in the ordering/referring field on the claim
• Recertifying late — after the certified duration has already lapsed
• Setting every POC to the full 90 days instead of an individualized duration

Frequently Asked Questions