Group Physical Therapy Billing and Class Setup

Group physical therapy billing is the part that stops most clinics before the first class runs, and the honest answer is that the rule sits in your payer's own current document rather than in any guide. What a group service is, whether the clinician must be present throughout, whether participants may be doing different exercises, and whether a size limit applies are all defined by the payer, and they differ between Medicare and a private insurer in the same town. No code, item number, participant cap, rebate or fee appears on this page, and the section on billing says where each of them is written down instead.

This guide is for clinic owners, PTs and physiotherapists in the USA, the UK, Canada, Australia and New Zealand who are thinking about running classes. The clinical evidence, regulator standards and advertising rules quoted here were read on October 24, 2026. It is education, not legal, billing or coding advice.

Who is in the room, and what makes it physiotherapy rather than a gym class

A class becomes physiotherapy because of what happens around it, not because a physiotherapist is standing at the front. A payer or a regulator looking at your class will work down this list, in roughly this order.

Every participant was assessed individually first, by a clinician, with a diagnosis or a working problem list.
Each has their own goals and their own prescribed exercises and dose inside the class, even when the group moves through the same circuit.
Somebody progresses or regresses each person's exercises as they change, and records why.
There is a note per participant per session, in their own record.
There are exclusions, and somebody applies them at the door rather than after an incident.
Outcomes are measured for each person, not for the class.
The clinician is present and watching, not setting a timer and leaving the room.

If a class has none of those, it is group exercise, which is a perfectly good thing to sell and a different thing to describe. Call it what it is, because in Canada, Australia and the UK the advertising rules below apply to how you describe it, and describing general exercise as physiotherapy treatment is the kind of claim that gets a clinic in trouble.

How do you bill a group session?

This is the question people search for, and a method is all anyone can honestly hand you. Four things decide it everywhere: what the payer calls a group service, whether the time is counted or the session is billed once, who must be present, and whether anyone sets a limit on numbers. Find those four answers in the payer's own current document, with a date on it, before you take a booking.

USA. The procedure code set distinguishes services delivered one-on-one from services delivered to a group, and the definitions that matter are the ones in the code set itself and in your payer's policy, not in a vendor's blog post. For Medicare, the authority is the relevant CMS manual plus your own Medicare Administrative Contractor's local coverage determination, which is where any limit on group size would appear if one applies to you. For each private payer and workers compensation scheme, it is their own provider manual. Ask each payer, in writing, whether the clinician must be in attendance for the whole session, whether participants may perform different activities, whether the service is timed, whether a group size limit applies, and whether any part of it may be delivered by an assistant. The adjacent mechanics of timed and untimed billing are in the 8 minute rule guide, and Medicare's therapy threshold paperwork is in the KX modifier guide.

UK. Most classes are self-pay. Private medical insurers decide for themselves whether a class is a covered benefit, often with their own code and their own conditions on clinician presence and numbers, so ask each insurer before you advertise to their members. Inside the NHS, it is the service contract that decides.

Canada. Provincial public coverage of outpatient physiotherapy is limited and differs by province, and extended health benefit plans pay according to the policy wording, which is usually written around a treatment by a registered physiotherapist rather than around a class. Ask the insurer whether a group session qualifies and how it should be submitted. Your college's billing standard governs the rest: Ontario's Funding, Fees and Billing Standard, effective August 1, 2025, requires that billings and accounts are accurate and that the patient has received a fee schedule covering billing policies and potential charges before they become subject to any fee. The funding routes are set out in the extended health benefits guide, with OHIP and WSIB for Ontario specifically.

Australia. Medicare covers physiotherapy only in defined circumstances, and the item descriptors in the Medicare Benefits Schedule are the authority on whether a group service is claimable and under what conditions. Private health insurers set their own item codes and their own rules for group services, and NDIS has separate price arrangements. The routes are covered in the private health insurance guide, the chronic condition management plan guide and the NDIS guide.

New Zealand. For injury-related care, ACC contracts set what can be claimed and how, so read the contract you hold. Everything else is self-pay. See the ACC physiotherapy guide.

Why no figures: the codes, item numbers, caps and rebates circulating in articles about group therapy mostly come from secondary sources, and a stale number in billing is not a small mistake. It is either underpayment you absorb or a claim you have to repay. Get them from the payer and write the date you got them next to the answer.

Can a patient claim a group class on insurance?

Sometimes, and never assume it. The patient's own policy decides, and the same insurer may cover individual treatment and not a class.

How to handle it without creating a complaint:

Tell the patient to check their own policy before the block starts, and tell them what to ask: is a group session covered, under what benefit, and is there an annual limit.
Quote no rebate amount. A rebate you name and the patient does not get is your problem, not the insurer's.
Give them a receipt or invoice with whatever the payer requires on it, which you have confirmed with that payer.
If a block is prepaid, say in writing what happens if cover is refused.

The advertising rules sit on top of this and they differ enough to change what you may sell. Section 133 of the National Law requires an advertisement offering a gift, discount or other inducement to state the terms and conditions of the offer, and separately prohibits advertising that creates an unreasonable expectation of beneficial treatment. The Ontario advertising standard requires an advertisement for bundled physiotherapy services to disclose what is included, the option to buy services individually, and the availability of refunds for unused services. Alberta's College rules out inducements of any kind and treats time-limited pricing as one, with its own worked example of a month-long discount, but it does allow a discount that is not time-limited, such as a standing rate for seniors or students, applied consistently to everyone in the group and displayed openly with your fees. In the UK, CAP Code rule 12.1 requires objective claims to be backed by evidence, so "our class reduces knee pain" is a claim you must be able to support.

Manitoba is the one to check before you design a block at all, because its practice direction rules out package deals and fee bundling by name, along with time-limited pricing, gift cards and prize draws. A six-week class block sold as a package is the ordinary commercial shape of this service and it is not obviously available there. If you practice in Manitoba, settle that with the College before you price anything.

Does group exercise work as well as one to one?

For musculoskeletal conditions, broadly yes on pain and disability, and the clinic reason for running a class should still be access or cost rather than better outcomes.

The relevant review is O'Keeffe and colleagues in the British Journal of Sports Medicine in 2017. It pooled 14 randomized trials, seven in low back pain, four in neck pain, two in knee pain and one in shoulder pain, and found no clinically significant differences in pain and disability between group and individual physiotherapy involving exercise. The limitation is sharper than usually reported: all but one of the 14 trials had other interventions bundled in with the exercise in one arm or the other, so what was compared was packages of care rather than delivery formats. The authors say outright that this makes the unique effect of how exercise is delivered difficult to work out.

What that supports in practice: offering a class as an alternative route for a suitable patient, with reasonable confidence that they are not getting a worse result on pain and function. The authors' own conclusion is that group work deserves considering more often given similar effectiveness and potentially lower cost, which is an argument about access and money rather than outcomes. What it does not support: advertising the class as more effective than one-to-one care, which in Ontario, Alberta and Manitoba would also be a comparative or superlative claim your standard rules out.

Assessment, individual programming and notes for each participant

Treat the class as a delivery method for individual care, and the documentation looks after itself.

Each participant needs their own assessment and their own plan of care before they join, with the class named as the way the plan is delivered and a planned review point. Write the prescribed exercises and the dose for that person, not for the class, and record what you changed and why at each review. A short note per person per session is enough if it says what they did, what you changed and anything you noticed: the SOAP notes guide shows where each part goes.

Measure outcomes per person with a standard measure so that the review is based on something other than impression, and so that a payer asking what the class achieved gets an answer. The outcome measures guide covers which to use. Patients also need something to do between classes, and prescribing from a shared library keeps the standard even across a group: that is where PocketPhysio fits, with the program going to the patient's phone as a link, a text or an email, or into Pocket Physio Care, our patient app, each exercise carrying a video and a voice guide.

Numbers, space and staffing

No participant cap is given here, because the number is not ours to set and the figures quoted in articles about group therapy come from secondary sources. Four constraints decide it for your class, and the lowest of the four wins:

The payer's rule, where it has one. Ask, and record the answer with its date.
Your indemnity insurer and your premises. Public liability cover, fire capacity and the usable floor area are all hard limits, and your insurer may have conditions about group work.
What your regulator permits in terms of delegation and supervision, including whether an assistant may lead any part of the session and what must be done by the clinician. In the USA that is the state practice act and board, which this page does not describe; in Canada it is the provincial college; in Australia and New Zealand it is the Board's standards.
What you can actually see. If you cannot watch every participant's technique and correct it, the number is too high, whatever the other three allow.

Staffing follows from that. One clinician can run a small class alone if the exercises are simple and the participants are stable. A mixed class of post-operative and older patients needs either fewer people or a second pair of hands. Space matters more than people expect: a circuit needs room to move between stations without queuing, and a chair for anyone who needs to sit down.

Screening, and the patient who should not be in a group

Screening is the part that makes a class safe, and it has to happen before the first session rather than in it.

Who needs individual care instead, at least for now:

Anyone whose symptoms have not been assessed, or whose diagnosis is unclear.
Anyone with any of the warning signs in the red flags guide that have not yet been investigated. Those need medical review, not a class.
Patients inside post-operative restrictions, where the surgeon's protocol sets limits on range or weight bearing that a group circuit cannot police.
Patients whose exercise needs close monitoring, for example where blood pressure, heart rate or oxygen saturation has to be watched, unless the class is set up and staffed to do it.
Patients at high risk of falling who need hands-on support to exercise safely.
Anyone who cannot follow the instructions in the class for language, hearing, vision or cognitive reasons, unless the class can be adapted.
Anyone whose condition is flaring to the point that the planned dose would not be right for them that day. That is a decision to make on the day, every time.

Write the exclusion list down, ask the same screening questions of everyone, repeat the key ones at each session, and make the clinician in the room responsible for standing somebody down. Say in the class information what to do if symptoms change between sessions, and who to contact.

Pricing a block without inventing a figure

Price it the way you price anything else: from your own cost per clinical hour, with the class's own overheads counted, and with the number of participants you can safely take rather than the number that makes the spreadsheet work. The arithmetic is in the pricing guide, and no fee or benchmark is suggested here.

Prepayment is where blocks go wrong, and two regulators have already written the answer. Ontario's Funding, Fees and Billing Standard, effective August 1, 2025, defines bundled physiotherapy services as a program of treatment or set of services intended to be delivered as a plan of care, and requires policies to reduce the risks of prepayment, suggesting among them offering to buy one service at a time and refunds for unused services. The Ontario advertising standard requires the same three things to be disclosed in the advertisement. Adopt that everywhere: say what is included, offer single sessions as an option, and refund what is not used.

British Columbia's regulator adds the practical detail that makes prepayment survive an audit. Say in writing that an unused portion is fully refunded if the patient is discharged early or cancels, keep prepayment optional with single sessions available, and mark the receipt as prepayment rather than as services delivered, issuing a second receipt once the sessions actually happen. That last point exists because a prepayment receipt submitted to an insurer for treatment that never took place is a problem whoever created it.

Set an expiry that is fair and say it before payment, not in the small print. And decide what happens when somebody misses a class in a fixed block, which is a cancellation policy question rather than a pricing one: see the cancellation policy guide. If classes are part of a plan to keep patients engaged to the end of their care, the patient retention guide covers what actually drives completion, and conditions where a class suits the evidence well include knee osteoarthritis and low back pain.

If the classes are part of opening a practice rather than adding to one, the registration, insurance and funding groundwork sits in the start-up guides for the USA, the UK, Canada, Australia and New Zealand.

The short version

Build the class as individual care delivered in a group: assess everyone first, prescribe and progress each person's own exercises and dose, write a note per person per session, measure outcomes per person, and apply a written exclusion list at the door.

Get the four billing answers from each payer in their own current document, with the date you got them: what counts as a group service, whether it is timed, who must be present, and whether numbers are limited. Quote no rebate to a patient and name no code from a guide, including this one.

Set the group size at the lowest of what the payer allows, what your insurer and premises allow, what your regulator allows you to delegate, and what you can actually watch. Price from your own costs, disclose what a block includes, offer single sessions and refund what is unused. Check whether your own college permits a package at all before you build one, because Manitoba's rules out fee bundling by name. And describe the class accurately, because in Canada, Australia and the UK, how you advertise it is regulated as closely as how you run it.

References

O'Keeffe M, Hayes A, McCreesh K, Purtill H, O'Sullivan K. Are group-based and individual physiotherapy exercise programmes equally effective for musculoskeletal conditions? A systematic review and meta-analysis. British Journal of Sports Medicine. 2017;51(2):126-132. doi:10.1136/bjsports-2015-095410
College of Physiotherapists of Ontario. Funding, Fees and Billing Standard. Effective August 1, 2025. Accessed October 24, 2026. https://collegept.org/standard/funding-fees-and-billing-standard/
College of Physiotherapists of Ontario. Advertising and Marketing Standard. Effective May 1, 2025. Accessed October 24, 2026. https://collegept.org/standard/advertising-and-marketing-standard/
College of Physiotherapists of Alberta. Good Practice: 10 examples of unprofessional advertising. Page updated July 13, 2026. Accessed October 24, 2026. https://www.cpta.ab.ca/news-and-updates/news/good-practice-10-examples-of-unprofessional-advertising/
College of Physiotherapists of Manitoba. Advertising and Marketing (practice direction), performance expectations G and H. Current and updated as of June 12, 2025. Accessed October 24, 2026. https://manitobaphysio.com/wp-content/uploads/2025/06/Advertising-and-Marketing-1.pdf
College of Health and Care Professionals of British Columbia. Physical Therapists: Marketing and Promotions, sections on prepaid treatment and discounted fees. Accessed October 24, 2026. https://chcpbc.org/wp-content/uploads/2024/08/Marketing-Promotions-RPT-2024-08-01.pdf
Health Practitioner Regulation National Law, section 133 (Advertising), as set out in the Schedule to the Health Practitioner Regulation National Law Act 2009 (Queensland consolidation, in force at the date accessed). Accessed October 24, 2026. https://www.legislation.qld.gov.au/view/whole/html/inforce/current/act-2009-045
Australian Health Practitioner Regulation Agency and National Boards. Guidelines for advertising a regulated health service. Took effect December 14, 2020. Accessed October 24, 2026. https://www.ahpra.gov.au/Resources/Advertising-hub/Advertising-guidelines-and-other-guidance/Advertising-guidelines.aspx
Committee of Advertising Practice. CAP Code, Section 12: Medicines, medical devices, health-related products and beauty products, rules 12.1 and 12.2. Accessed October 24, 2026. https://www.asa.org.uk/type/non_broadcast/code_section/12.html

Written and checked by the PocketPhysio editorial team. Last updated 2026-10-24.

Group physical therapy billing: classes, staffing and how to run them