RTM for Physical Therapy: Billing for Home Exercises

Physical therapy practices have been billing for in-clinic treatment since the profession began. But the work PTs actually do — designing home exercise programs, educating patients on movement mechanics, motivating adherence between visits — has largely been uncompensated. Remote Therapeutic Monitoring changes that equation. For the first time, physical therapists have a Medicare-covered billing pathway for the monitoring they do between sessions: tracking whether patients are completing their home exercises, reviewing their self-reported pain and functional outcomes, and interacting with them about their progress. If you are a PT who regularly calls patients to check on their home program or reviews app-based exercise logs before each visit, you are already doing RTM. You may not be billing for it.

Why PT Is the RTM Sweet Spot

Physical therapy is the specialty RTM was most naturally designed to serve. The entire therapeutic relationship in PT depends on what happens between visits — whether the patient is doing their exercises, how their pain is responding to movement, whether their strength and range of motion are progressing on the expected trajectory. The clinical outcomes of PT treatment are largely determined by home exercise adherence, which has historically been unmonitored and unknowable between sessions.

RTM gives PTs a structured, reimbursed mechanism for monitoring that between-visit behavior. A patient using an app to log their exercise completions, record their pain scores, and answer brief functional outcome questions is generating exactly the kind of therapeutic data that RTM is designed to capture. The PT reviews that data, adjusts the program as needed, and interacts with the patient — and bills for the time spent doing so. The monitoring improves clinical outcomes and generates revenue. That combination is rare in healthcare.

PTs can bill RTM under their own NPI without physician supervision or a separate physician order, which is a significant advantage over some other reimbursement programs that require physician involvement. The RTM code set was specifically designed to include therapists as eligible billing providers.

How Home Exercise Monitoring Works

The mechanics of RTM for PT home exercise monitoring are straightforward. The patient is enrolled in the RTM program at or before their first therapy visit. They are given access to a monitoring platform — typically a smartphone app — where they log their exercise completions, self-report pain and fatigue levels, and answer periodic functional outcome questionnaires. The data is transmitted automatically to the practice.

Clinical staff review the transmitted data regularly throughout the billing period. If a patient’s adherence drops — they stop logging exercises, their pain scores spike, or their functional outcome measures plateau — staff reach out proactively. This is the core value proposition of RTM: it converts the between-visit period from a clinical blind spot to a monitored, managed interval. Problems that would previously have gone undetected until the next in-clinic session are now visible in real time and addressable before they compound.

For billing purposes, the monitoring must be active for at least 16 of the 30 days in the billing period. This means the patient needs to engage with the monitoring platform on at least 16 days — which, for a home exercise program where patients are exercising 5 to 6 days per week, is typically achievable without significant additional burden.

The 20-Minute Interaction Requirement

The core billing threshold for RTM treatment management is 20 minutes of time spent by clinical staff or the practitioner on RTM services for a given patient in a calendar month. This 20-minute threshold covers data review, clinical decision-making about the monitored data, and communication with the patient or their caregiver about the monitoring findings.

For a PT practice with an active patient panel, 20 minutes per patient per month is achievable within normal clinical operations. A brief data review before each in-clinic session (5 to 8 minutes), a phone or app message interaction with a patient who is struggling with adherence (10 to 15 minutes), and a follow-up note documenting the interaction (5 minutes) can easily reach 20 minutes over the course of a month.

Time must be tracked and documented to support billing. The practice cannot estimate or retroactively reconstruct RTM time — each interaction must be logged with the date, duration, the staff member involved, and a brief description of the clinical activity. Most RTM platforms include built-in time tracking that generates this documentation automatically as staff work through their patient monitoring queue.

CPT 98981 allows billing for each additional 20-minute increment beyond the first. A month where a PT or their clinical staff spends 45 minutes on a specific patient’s RTM — a patient who had a setback, needed program modification, and required extended communication — can generate claims for both 98980 (first 20 minutes) and 98981 (second 20-minute increment), increasing the monthly revenue for that patient.

Documentation That Supports Claims

RTM documentation for PT practices needs to establish four things in the medical record. First, enrollment: the patient consent, the diagnosis, and the monitoring plan. Second, data receipt: evidence that the patient transmitted data on at least 16 days during the billing period. Third, clinical review: notes reflecting that the transmitted data was reviewed and clinically interpreted. Fourth, interaction time: a log of the time spent on RTM services during the billing period, supporting the 20-minute minimum.

The clinical review note does not need to be extensive. A brief notation — “Reviewed home exercise data for [date range]. Patient completed 18 of 21 scheduled exercise sessions. Pain scores trending down. No program modifications indicated at this time.” — is sufficient to demonstrate meaningful clinical engagement with the monitored data. What auditors look for is evidence that someone actually looked at the data and thought about it clinically, not just that data was collected.

Payer-by-Payer Coverage

Medicare covers RTM for physical therapists billing under their own NPI, with no physician order required. This is the clearest and most consistent coverage available. Medicare Advantage plans generally follow Original Medicare coverage, though plan-specific policies can vary and some Medicare Advantage plans require prior authorization.

Commercial payer coverage for PT RTM has expanded significantly since 2023. Aetna, Cigna, and UnitedHealthcare have published coverage policies supporting RTM for therapy practices. Blue Cross Blue Shield coverage varies by state plan. Verifying coverage at the plan level before enrolling commercial patients is important, as some plan-level policies still lag behind the payer’s published guidance.

Workers’ compensation payers and no-fault insurers have variable coverage, and many have not yet published explicit RTM policies. For these payers, checking with the specific adjuster or carrier before initiating a RTM program is advisable.

Getting Patients Enrolled

The biggest practical barrier to PT RTM is not billing — it is enrollment. Patients need to understand the value of the monitoring program, consent to it, and actually use the monitoring tool consistently. The enrollment conversation sets the tone: if RTM is presented as an optional add-on that the patient may or may not engage with, engagement will be low. If it is presented as a core component of the therapy program — “We use a monitoring app between sessions so we can track your home exercise progress and reach out if you run into problems” — patients are more likely to adopt it as part of their care routine.

Making the technology frictionless is equally important. A monitoring app that patients can’t figure out, that requires a password reset every week, or that sends them daily notifications they find annoying will generate poor adherence and undermine the 16-day data threshold. The best RTM implementations in PT use apps that are simple enough that patients log their exercises in under 2 minutes per session, with minimal prompting.

Physical therapy is the profession that stands to gain the most from RTM as a billing and clinical tool. The between-visit period is where PT outcomes are won or lost, and RTM makes that period visible, manageable, and now, reimbursed. The practices that implement RTM correctly in 2026 will look back on it as the revenue and outcomes program that most directly amplified what they were already doing.