Physical therapist assistants can write daily treatment notes, and they can add supplemental entries between reporting periods, but under Medicare rules a PTA cannot write the formal progress report on their own. So the answer to whether PTAs can do progress notes depends entirely on which document you mean. Session-by-session notes are part of the PTA’s job. The clinical assessment of whether the patient is improving toward the goals in the plan of care belongs to the supervising physical therapist.
That distinction is where clinics get into trouble. “Progress note” and “progress report” get used interchangeably in casual conversation, and Medicare treats them as two different things.
Daily Treatment Notes a PTA Can Write
A daily treatment note, sometimes called a visit note or session note, records what happened during a single therapy visit. PTAs write these for every session they provide, and Medicare does not require a PT co-signature on daily notes written by a PTA (though some states and private payers do).
For each session, the PTA documents:
- Subjective information: what the patient reports about pain, how they feel, and any changes since the last visit
- Objective measurements: range of motion, strength testing, gait observations, vital signs, and functional status
- Interventions performed: the specific exercises, manual techniques, modalities, and education provided
- Patient response: how the patient tolerated treatment, whether they progressed with home exercises, and any adverse reactions
PTAs can also write supplemental entries that fall between the PT’s formal progress reports. These include the dates of the reporting period, the PTA’s signature and credentials, relevant patient statements, and objective measurements showing changes relative to current treatment goals.1Centers for Medicare & Medicaid Services. Medicare Benefit Policy Manual, Chapter 15 Supplemental notes do not replace the PT’s progress report. The PT still has to write one during each reporting period regardless of what the PTA has documented.
What Only the PT Can Write
Certain documents and decisions are off-limits for PTAs. The supervising PT is exclusively responsible for:
- Initial evaluations, meaning the first comprehensive assessment of the patient’s condition and therapy needs
- Re-evaluations when the patient’s condition changes significantly or a new clinical question arises
- The plan of care, including establishing, modifying, or updating goals, frequency, and duration
- The clinical assessment in progress reports, meaning the professional judgment about whether the patient is improving and whether continued treatment is medically necessary
- Discharge summaries when an episode of care ends
The logic is straightforward. Anything requiring clinical judgment, diagnosis, or prognostic assessment belongs to the PT. The PTA collects and records data; the PT interprets it and decides what to do.
The Medicare 10-Visit Progress Report Rule
Medicare requires a progress report at least once every 10 treatment days. The count starts on the first day of the treatment episode, whether that day involves an evaluation or a treatment session. The PT can write the report earlier, but cannot push it past the 10th visit.1Centers for Medicare & Medicaid Services. Medicare Benefit Policy Manual, Chapter 15
The report has to include an assessment of improvement toward each goal, plans for continuing treatment, any changes to goals, and reference to additional evaluation results or plan-of-care revisions. Simply documenting what happened at the 10th visit does not satisfy the requirement, even if the PT treats the patient that day and records standardized test results. The report needs to reflect a clinical judgment about the trajectory of care.1Centers for Medicare & Medicaid Services. Medicare Benefit Policy Manual, Chapter 15
This is where many clinics get burned. A PTA sees the patient for eight or nine consecutive visits, nobody tracks when the 10th falls, and the PT never writes the required report. Missing or incomplete progress reports are among the most common errors flagged by Medicare’s Comprehensive Error Rate Testing program.2Centers for Medicare & Medicaid Services. Complying with Outpatient Rehabilitation Therapy Documentation Requirements When auditors pull the file and find only PTA-written notes where a PT progress report should be, the claim gets denied.
How PTA Documentation Connects to Billing
When a PTA provides physical therapy services, the claim must include the CQ modifier alongside the standard GP therapy modifier. This has been required for dates of service since January 1, 2020, and claims missing the CQ/GP pairing are rejected.3Centers for Medicare & Medicaid Services. Billing Examples Using CQ/CO Modifiers for Services Furnished In Whole or In Part by PTAs and OTAs
Services billed with CQ are reimbursed at 85% of the otherwise applicable Part B payment. That 15% reduction took effect January 1, 2022, under Section 1834(v) of the Social Security Act as added by the Bipartisan Budget Act of 2018, and remains in effect for 2026.4Centers for Medicare & Medicaid Services. Therapy Services The reduction applies whether the PTA furnishes the entire service or just a portion.
The modifier is required when the PTA provides all the minutes of a service independently, or when the PTA’s independent minutes exceed 10% of the total minutes for that service. That 10% threshold is called the de minimis standard. When a PT and PTA treat the patient at the same time, the CQ modifier does not apply because the PT is directly providing the care.3Centers for Medicare & Medicaid Services. Billing Examples Using CQ/CO Modifiers for Services Furnished In Whole or In Part by PTAs and OTAs
Accurate time tracking in the PTA’s treatment notes is what determines whether CQ is needed and how units get allocated. Sloppy timekeeping produces incorrect modifier use, which leads to overpayments (audit liability) or rejected claims (lost revenue).
Supervision and State Rules
Every note a PTA writes reflects care delivered under a PT’s supervision. The PT holds ultimate responsibility for the plan of care and all related documentation, regardless of who physically treats the patient on a given day.
Medicare outpatient therapy settings generally require general supervision, meaning the PT maintains overall direction and control but does not need to be physically present during each session. Hospital outpatient departments typically require direct supervision, meaning the supervising clinician must be immediately available throughout the service, though not necessarily in the treatment room.5Centers for Medicare & Medicaid Services. Medicare Benefit Policy Manual – CMS Manual System
State practice acts sit on top of the Medicare baseline and can be stricter. Some states cap how many PTAs one PT can supervise, with limits typically ranging from two to four. Co-signature rules vary too: some states require the PT to co-sign every PTA note within a set timeframe (commonly seven days), while others require no co-signature on daily notes at all. A state may also require documented supervisory conferences at regular intervals, or restrict PTAs from documenting certain clinical observations that other states allow.
When state rules conflict with Medicare or private payer rules, follow whichever is more restrictive. A state requiring PT co-signature on all PTA notes still requires it even though Medicare does not. A payer demanding a progress report every five visits still requires it even if the state is silent on frequency. Check with your state physical therapy licensing board directly; general Medicare guidance does not settle the question.
What Happens When the Line Gets Crossed
Documentation mistakes in physical therapy rarely stay small. When a PTA writes what amounts to a progress report and the clinic bills the service as though a PT performed the assessment, the claim is wrong.
The most common audit trigger for therapy services is missing or incomplete documentation, particularly the absence of a required progress report, plan of care, or certification.6Noridian Healthcare Solutions. Common Errors – JE Part B When auditors identify overpayments, Medicare recoups the money, and the clinic has to work through a multi-level appeals process to get it back. A pattern of PTAs writing progress reports that get billed as PT work can also expose the clinic to False Claims Act liability.7Centers for Medicare & Medicaid Services. Laws Against Health Care Fraud Fact Sheet
The clean way to keep the line intact: PTAs write session notes and supplemental entries; the PT writes the formal progress report at or before the 10th treatment day; someone in the clinic tracks the visit count so the deadline does not slip; and both clinicians know their state board’s rules, not just Medicare’s.