Plan of Care Recertification for PT: The Documentation Gap That Costs Practices Money

The plan of care (POC) is the clinical and billing foundation of every Medicare therapy episode. Without a valid, signed POC—and a recertification signed on schedule—every claim in that episode is at risk.

The rule sounds simple: get a physician’s signature on a plan of care every 90 days. In practice, the gap between what practices believe they are doing and what Medicare actually requires is exactly where audit findings come from.

Here is what CMS requires, where the common failures are, and how to build a workflow that holds up.

The 90-Day Recertification Requirement

Under CMS guidelines, the physician or non-physician practitioner (NPP) who certifies the plan of care must recertify at least every 90 days or at the completion of each plan of care—whichever comes first.1

That 90-day clock runs from the date the certification period begins, not from the date of first service. If a patient’s plan of care started January 1, recertification is due by April 1—regardless of how many visits occurred in that window.

A missed recertification deadline means every claim billed after day 90 (without a valid new certification in place) is subject to denial and repayment. This is not a technicality that MACs overlook. It is a systematic audit target.

What Counts as a Valid Signature

CMS is explicit about what does—and does not—satisfy the signature requirement for plan of care certification.

Acceptable:

  • Handwritten signature with date
  • Electronic signature generated through a compliant EHR with a full audit trail2

Not acceptable:

  • Rubber stamps. CMS specifically excludes stamped signatures from meeting the certification requirement. A stamp does not constitute physician certification regardless of how long it has been used in your practice.

Verbal orders: A physician’s verbal order can authorize the initiation of a therapy plan. But that verbal order must be followed by a written countersignature within 14 days.3 If you receive verbal authorization on February 1 and do not obtain a signed document by February 15, those claims are uncertified. There is no grace period on the 14-day rule.

Faxed referrals: A faxed copy of a signed referral is generally acceptable—but the original document must have been signed by the physician before faxing. A printout of an unsigned EHR order faxed by a medical assistant is not a physician signature.

The Signed-Referral Exception: Initial Cert Only

There is a nuance that frequently causes problems: a signed physician referral can satisfy the initial certification requirement—but it cannot substitute for recertification.

At the start of a therapy episode, a signed referral that contains the required elements (diagnosis, planned services, treating provider) may serve as the plan of care certification. This is a practical accommodation for practices that begin care quickly after referral and have not yet generated a formal POC document.

But at recertification—the 90-day mark—you need an actual plan of care document with updated functional goals, current objective status, and a new physician signature. The referral-as-POC path closes after the first certification period.

Practices that carry the original referral forward as the ongoing “plan of care” indefinitely are among the most common targets in RAC audits of outpatient PT claims. Auditors specifically look for this pattern because it appears in claim data as a high volume of billed services supported by a single dated document.

Common RAC Audit Targets

Recovery Audit Contractors focusing on outpatient therapy consistently identify the following plan-of-care failures:

Missing recertification signatures. The most common finding. A therapist updated the plan of care at 90 days with appropriate goals and objective measures—but the physician never signed the recertification. The clinical documentation may be excellent, but the billing support is incomplete.

Rubber stamp certifications. RAC contractors recognize stamped signatures. If the certifying physician uses a signature stamp, every associated claim is at risk.

Recertification signed after the claim dates it purports to cover. The physician signature date must precede—or be contemporaneous with—the claims in that certification period. A recertification signed on day 95 does not retroactively cover days 91–94.

Verbal orders without countersignature documentation. The 14-day countersignature rule is strictly applied in audit. Practices without a process to track open verbal orders will find some going unsigned past the deadline.

Referral carried as the plan of care beyond the initial certification period. As noted above, this is a structural error that survives undetected in daily operations until an audit surfaces it.

The Cost of Getting This Wrong

Plan of care failures are not minor technical defects. Under CMS guidance, claims billed without valid certification are overpayments subject to repayment with interest.4 In a RAC extrapolation audit, a documentation failure identified in a sample may be projected across your entire claim population. A pattern of missing recertifications discovered in a 30-claim sample can become a six-figure repayment demand based on extrapolation to all similar claims.

The practice that avoids this outcome is not the one with the best attorneys on retainer. It is the one that never had a 90-day window go unsigned.

A Practical Workflow to Close the Gap

A plan-of-care tracking system does not need to be expensive or complex. It needs to be consistent.

Track certification expiration dates in your scheduling system. Most EMRs can flag patients whose POC is expiring within 14 days. If yours cannot, a shared spreadsheet with a weekly filter view works. Assign someone to review this list every Monday.

Send the unsigned POC to the physician well ahead of the deadline. Do not wait until day 85. Send at day 75. Physicians are busy; a two-week window is realistic. A same-day turnaround request is not, and chasing late signatures creates the exact errors RAC contractors look for.

Document your signature method. If referring physicians use an EHR with compliant electronic signatures, note that system in your compliance documentation. If they sign paper, retain the original. If they fax a copy, note the original-document requirement in your intake workflow.

Log every verbal order with a 14-day deadline. When you receive verbal authorization, record it with the date received and the countersignature deadline. Assign someone to follow up before day 14. Do not rely on memory.

Do not carry the referral past the initial certification period. At 75–80 days into the first certification, generate a formal recertification document with updated goals and send it to the physician. The referral was good for the first period. The second period requires its own signed document.

Run a quarterly self-audit. Pull 10 patient files at random each quarter. Verify: Does each 90-day window have a signed recertification with a date that precedes the claims in that period? Is the signature handwritten or compliant electronic—no stamps? Are verbal orders countersigned within 14 days?

A quarterly self-audit catches patterns before a contractor does. It is also the most efficient compliance activity available to an independent PT practice—low cost, high yield.

The Bottom Line

The 90-day recertification is not a formality. It is the legal basis for your Medicare billing. Rubber stamps, late countersignatures, and referrals carried beyond the initial certification period are claims that may not be collectible.

Build the tracking. Send documents early. Run the quarterly audit. These habits cost little time and are far less disruptive than a prepayment review.

For a structured review of your POC and documentation workflows as part of a broader revenue cycle assessment, see therapyrevenuepros.com/revenue-cycle-management/.

Get a free revenue cycle assessment at therapyrevenuepros.com/contact/

Footnotes

  1. CMS Medicare Benefit Policy Manual (Pub. 100-02), Chapter 15, §220.1.3. ↩

  2. CMS Medicare Program Integrity Manual (Pub. 100-08), Chapter 3, §3.3.2.3. ↩

  3. CMS Medicare Benefit Policy Manual (Pub. 100-02), Chapter 15, §220.1.3. ↩

  4. OIG, Medicare Outpatient Physical Therapy: Documentation Requirements and Billing Compliance, OEI-07-18-00180, 2019. ↩