Discover the world’s most extensive home exercise library.
Explore remote therapeutic monitoring and billing solutions for your clinic
Measure, benchmark, and improve patient outcomes.
Empower patients with tools to support their recovery.
Customized patient mobile experience under your own clinic brand.
The solution that organizes your patient activities, from triage to discharge.
A practical guide to CPT code 98977, the RTM device supply code for 16+ monitored days in a 30-day period, with billing rules and documentation guidance.
CPT code 98977 is the code that signifies sustained RTM engagement. A patient transmitting monitored data on 16 or more days across a 30-day period isn’t just showing up occasionally, they’re engaged with their program at least every other day on average, producing the kind of continuous data that actually informs clinical decisions.
What’s different about 98977 in the 2026 landscape isn’t the code itself, it existed before, with the same structure and threshold. What’s new is what sits alongside it. The introduction of 98985 (RTM device capturing 2–15 days of MSK data in 30 days) reshaped how 98977 gets used: it’s now the higher tier of a two-code device supply structure, and the choice between the two codes for a given billing period comes down to how consistently the patient engaged.
The official CPT definition covers Remote Therapeutic Monitoring device(s) supply with scheduled recording(s) and/or programmed alert(s) transmission to monitor the musculoskeletal system, when the patient generated 16 or more monitored days across a 30-day period. This is a service code, not a treatment management code, it pays for the device or platform supply itself, not for the clinician time spent overseeing the program.
The clinical scope covers musculoskeletal monitoring across therapy adherence, therapy response, and digital therapeutic intervention. The monitored data can include patient-reported symptoms, adherence patterns, functional status, and objective musculoskeletal data points, whatever the RTM platform captures across the 30-day window. What the code doesn’t cover is respiratory or behavioral health monitoring, which use separate code mechanics entirely.
The 16-day threshold isn’t an arbitrary billing rule, it’s a clinical engagement marker. Sixteen days of transmission across a 30-day window means the patient is engaging with their program at least every other day on average, which is the level of participation that produces data useful for real clinical decisions.
Below that threshold, the data is more sporadic. A patient who transmits eight or ten days in a 30-day window is still generating useful information, but the pattern is closer to snapshots than to continuous monitoring. That’s what 98985 was built for. Above the 16-day threshold, the data pattern shifts to something clinicians can meaningfully use for trend analysis, plan adjustments, and adherence review, the kind of monitoring RTM was designed to enable.
This framing matters for how clinics should think about the code. 98977 isn’t just “the higher-paying device supply code.” It’s the code that reflects genuinely active RTM engagement across a patient panel.
The tiered structure introduced in 2026 is straightforward: CPT code 98985 covers 2–15 monitored days in a 30-day period, 98977 covers 16 or more monitored days in that same window, and only one of the two codes is billed per patient per 30-day period. There is no scenario where both apply to the same billing window.
What the tiering means in practice is that for the same patient, a therapist can bill 98985 in some 30-day periods and 98977 in others, depending on the patient’s engagement in each specific period. A patient who transmits data 20 days in month one might drop to 12 days in month two, the therapist would bill 98977 for the first window and 98985 for the second. The code isn’t attached to the patient, it’s attached to how the patient engaged during that specific 30-day period.
The either/or structure protects the integrity of the billing system. The two codes never appear together on a claim for the same patient in the same period, but they can alternate across periods as engagement fluctuates, which is exactly what the 2026 update was designed to accommodate.
Something worth being explicit about: 98977 is a recurring code, not a one-time code. Every 30-day period the patient hits the 16-day threshold, alongside active monitoring, 98977 can be billed again. This is what separates the device supply codes from CPT code 98975 (Initial RTM setup and patient education), which fires once per episode of care and never repeats within that episode.
For long-term RTM programs, this recurring pattern is where sustained revenue value lives. A consistently engaged patient in a plan of care that spans six months can generate 98977 across each of those six 30-day windows, plus the management time codes billed each calendar month alongside it. Applied consistently across an engaged patient panel, this recurring reimbursement is what drives the ongoing revenue rehab clinics to build RTM programs around.
98977 covers device and platform supply. The management time codes, 98979, 98980, and 98981, cover the clinician time spent overseeing the RTM program each calendar month. These are complementary, not competing: in a single billing cycle, a patient with 20 monitored days and 25 minutes of qualified clinician time generates both 98977 (RTM device capturing 16+ days of MSK data in 30 days) and 98980 (20 minutes of RTM treatment-management time in January). CPT code 98979 applies instead when management time falls between 10 and 19 minutes.
The layering shows up naturally across a patient’s months in the program. Device supply is billed once per 30-day window based on monitored days. Management time is billed once per calendar month based on clinician oversight. The two codes don’t interact structurally, they simply appear together on the claim when their respective requirements are met.
Whether 98977 or 98985 becomes the more common code for a clinic comes down to one operational question: how consistently do patients actually transmit data across the 30-day window? Clinics with strong patient engagement workflows see 98977 as the dominant device supply code across their panel. Clinics without those workflows see more 98985 and while both codes currently reimburse at the same rate, the 98977 pattern reflects stronger clinical engagement, more useful monitored data, and a program running the way RTM was designed to work.
The adherence infrastructure that pushes patients toward the 16-day threshold has a few consistent features across successful programs. Onboarding that explains why regular transmission matters (not just how the platform works) tends to produce better ongoing engagement. Patient reminders that arrive at meaningful frequencies keep the program active without becoming noise. And real-time monitoring so quiet patients get re-engaged before the 30-day window closes catches drift early enough to still matter.
The clinics running RTM most effectively don’t treat the 16-day threshold as a passive target, they treat it as something the workflow actively supports patients toward, in ways that produce clinical value alongside the billing outcome.
Every RTM clinic encounters this scenario: a patient who was tracking well suddenly drops off mid-window. The clinic watches monitored days plateau at 12 or 14 with a week or so left in the 30-day period. Now there’s a decision to make.
Option one is active re-engagement, a check-in call, a message, a modified home program to make continued transmission easier, aimed at pushing the patient over the 16-day threshold to bill 98977. Option two is accepting that 98985 will be the correct code for this period and billing accordingly. Neither choice is wrong. What matters is that the choice is conscious.
This isn’t a clinical failure. 98985 exists specifically so that less patient engagement still generates reimbursement, and shorter-window monitoring still has genuine clinical value. But the choice between actively engaging and accepting the lower code should happen deliberately, not accidentally at the end of the 30-day clock.
Medicare recognizes 98977 for four provider categories: physicians, physical therapists, occupational therapists, and speech-language pathologists. The 2024 CMS Final Rule clarified that PTs and OTs in private practice can provide general supervision for RTM services furnished by PTAs and OTAs. Worth noting for this specific code: the CQ (PTA) and CO (OTA) assistant modifiers do not apply to 98977 or 98985, the device supply codes are excluded from the modifier requirement. The modifiers apply to the management time codes (98979, 98980, and 98981) when a PTA or OTA delivers the work under general supervision.
Coverage isn’t uniform across all payers or disciplines. Medicare doesn’t currently cover chiropractors for RTM. SLP-billed RTM has been inconsistent under Medicare in practice, and clinics should verify per payer before billing. Commercial payers vary in their reimbursement policies, though the underlying code definitions remain constant regardless of payer.
RTM codes cannot be billed by two different disciplines for the same patient within the same episode of care. If PT is billing 98977, OT or SLP cannot bill 98977 for that same patient in that same episode, even when all three disciplines are actively involved in care.
This matters most for clinics serving patients across disciplines. Stroke recovery, post-TBI rehab, and pediatric cases where PT, OT, and SLP see the same patient simultaneously all fall under this constraint. Teams have to decide upfront which discipline owns RTM enrollment and management for the patient, and that decision needs to hold for the duration of the episode. The choice usually goes to the discipline whose monitored data best supports the primary progression targets of the plan of care, not the discipline seeing the patient most often.
Audit-ready 98977 documentation needs to capture several specific elements: documented patient consent before billing began, evidence the patient transmitted data on at least 16 days within the 30-day period (with specific dates and summary of the data collected), identification of the device or platform used, and clear linkage to an active plan of care.
There’s a distinction that shapes what strong 98977 documentation actually looks like: this code covers 16+ days of monitored data, not just transmitted data. What was monitored, when it was reviewed, and what clinical action resulted from the data being seen matters as much as the raw transmission log itself. The transmission count establishes that the code is billable; the monitoring documentation establishes that the code is defensible.
How the monitoring summary gets documented varies based on how 98977 is billed. When 98977 is billed alongside management time codes (98979, 98980, or 98981), the monitoring summary is typically captured within the documented management minutes for that period, the clinician’s time log naturally describes what was reviewed and what actions were taken. When 98977 is billed on its own without a management time code in that period, best practice is to explicitly document a monitoring summary showing who monitored the data and how the data was used clinically, without that summary, the claim rests on the transmission count alone, which is thinner audit protection.
The documentation patterns that fail reviews are consistent: vague records that don’t describe the monitoring itself, monitored-day counts reconstructed at the end of the 30-day window, missing transmission logs, or transmission counts submitted without any clinical monitoring documentation attached. The cleanest approach is for the platform to maintain the transmission log automatically, manually recording monitored days across a large patient panel is where most audit risk enters.
A few predictable errors show up consistently. Billing 98977 when the patient only generated 12 or 14 monitored days, usually driven by an assumption or a rounded count, produces denials that should have been 98985 claims from the start. Billing 98977 and 98985 together in the same 30-day period isn’t allowed and doesn’t hold up when submitted. Missing consent documentation blocks otherwise valid claims. And continuing to bill 98977 after the patient has effectively discharged from the program creates exposure that surfaces during payer reviews.
The most common denial pattern is submitting 98977 before the 30-day window closes. The code cannot be billed until the full window is complete and the day count verified, attempting to submit early, even when the patient has clearly crossed the threshold, tends to produce claims that come back with timing errors.
Clinics tracking monitored days manually often miscount at the end of the period. Sometimes the count overstates (leading to denials for insufficient data); sometimes it understates (leading to legitimate 98977 opportunities getting billed as 98985 instead). Both patterns cost the clinic revenue that automated threshold tracking would have prevented.
Wibbi tracks patient transmissions in real time across every 30-day window, distinguishing patients on track for 98977 from those trending toward 98985 well before the window closes. When a patient approaches the 16-day threshold, the platform surfaces the pattern, letting clinicians make conscious re-engagement decisions rather than discovering the shortfall at the close of the billing period. The same threshold-tracking logic runs whether the clinic is delivering RTM for physical therapy programs during post-surgical recovery, occupational therapy RTM for ADL and functional rehab, speech therapy RTM for communication programs, pediatric RTM with caregiver-mediated engagement, chiropractic RTM, or pelvic health RTM programs.
Bill 98977 when a patient transmitted 16 or more days of monitored data in the 30-day period. Bill 98985 instead when the count falls between 2 and 15 days. The two codes never appear together on a claim for the same patient in the same period, though they can alternate across periods as engagement fluctuates.
The denial triggers come down to a short list: fewer than 16 monitored days in the window, billing both 98977 and 98985 for the same period, missing consent documentation, monitored-day counts reconstructed at the end of the window rather than tracked in real time, or claims submitted before the 30-day window has actually closed.
National average reimbursement for 98977 in 2026 is $39.77, with actual payment shaped by Medicare locality. This article is informational and isn’t intended as billing or legal advice, verify the latest CMS guidance and consult your billing team before submitting claims.
