- 8017 Labana Ct, Canton Township, MI 48187
- +1 (734) 418 2537
- info@a2zbillings.com
Outpatient PT is paid in minutes, not visits, and Medicare's unit rules only describe part of what a billing team is up against. We handle the coding, the discipline-specific modifiers, and the certification deadlines that keep a plan of care valid, so a claim reflects exactly what was documented, the first time it goes out.
✓ Working with outpatient clinics, hospital-based rehab departments, and multi-site PT practices nationwide.
A therapist can spend forty-five minutes moving a patient through therapeutic exercise, manual therapy, and gait training, and every one of those minutes has to survive translation into billable units, the right modifier, and a diagnosis code that actually supports medical necessity. Miss a step and the claim either underpays the clinic or gets pulled for review.
Medicare requires a physician or non-physician practitioner to sign the plan of care within thirty days of the initial evaluation, then expects progress reports on a fixed schedule after that. Commercial plans and Medicare Advantage add another layer on top: visit caps, prior authorization, and utilization review vendors that release care in small blocks instead of approving a full episode at once.
Our physical therapy billing services are built around that mix. We work with private outpatient clinics, hospital-based rehab departments, sports medicine groups, and multi-site practices running PT, OT, and speech together, and the biller assigned to your account already knows the difference between a GP and a GO modifier before the first claim goes out.
Most PT revenue runs through a short list of timed CPT codes billed in fifteen-minute increments, and Medicare's eight-minute rule sets the floor: a therapist needs at least eight minutes of a single timed service to bill one unit. The AMA's own counting method treats multi-code visits a little differently once several timed services stack in one session, so the same forty-minute visit can produce a different unit total depending on which method the payer expects.
Untimed codes run on a separate track. An evaluation, unattended electrical stimulation, and several modality codes bill once per session no matter how long they take, and folding them into a timed-unit count is a common source of both overbilling and underbilling.
Discipline matters too. A physical therapist assistant who furnishes a service earns the CQ modifier and an 85 percent payment rate once involvement crosses Medicare's threshold, and the same structure applies to occupational therapy assistants under the CO modifier. Group therapy, billed under its own code separate from one-on-one treatment, is a frequent point of confusion at intake.
Almost none of these are one-off mistakes. They trace back to a gap in the process, and once we find the gap, we fix it there instead of reworking each claim by hand.
A session run with more than one patient at once still has to be billed under the group therapy code, even when a therapist documented time with each patient separately.
CQ belongs to PTA-furnished care and CO to OTA-furnished care. Leaving either off, or attaching the wrong one, is enough on its own to trigger a payment cut or a denial.
Certification is due within thirty days of the evaluation. A signature that lands on day thirty-five puts every visit billed in between at risk.
Manual therapy billed alongside another timed code on the same date can trip a coding edit without the modifier that documents the services were distinct.
A report is due at least once every ten treatment visits or thirty calendar days, whichever comes first. Skipping it can put the whole reporting period in question, not just the note.
A utilization vendor approves six visits and the plan of care calls for twelve. Visits delivered past the approved count before a renewal is requested become the clinic's write-off.
Evaluation codes are chosen by complexity, weighed against the patient's history, exam findings, clinical presentation, and how much decision-making the case actually required. A separate re-evaluation code applies only when the patient's status has genuinely changed, not on a routine interval. Every treatment code that follows depends on timed minutes recorded in that day's note, not an estimate written from memory later.
The plan of care holds the episode together. It needs a physician or non-physician practitioner's signature within thirty days of the evaluation, recertification once ninety days pass or the plan changes, and progress reports on the schedule described earlier. A claim can be coded correctly and still deny if the certification behind it lapsed.
We check the certification date, the progress report schedule, and the modifier set against the note before a claim leaves the building, so a documentation gap gets caught before it turns into a denial weeks later.
The diagnosis has to justify the specific service billed, not just describe the patient's condition in general terms.
Traditional Medicare pays PT under fee-for-service rules with the KX modifier as the main safeguard once a patient's therapy costs pass the annual threshold. Medicare Advantage plans run the same benefit through their own utilization management process, often authorizing visits in small blocks and requiring functional progress notes before releasing more.
Commercial plans add their own visit caps and prior authorization requirements, and the assistant differential is not universal. Some commercial payers apply their own version of the CQ and CO payment reduction, and others require the modifier without cutting the rate, so assuming a plan follows Medicare's lead is a fast way to underbill or overbill a claim.
Workers' compensation and auto-liability claims run on an entirely different track. Fee schedules, required forms, and adjuster approval steps vary by state and by carrier, and a clinic treating a work injury alongside a Medicare caseload needs a biller who can move between both sets of rules without mixing them up.
We verify benefits and authorization before the first visit, track the approved count against the plan of care, and request continued authorization with functional progress data before the count runs out, whether the payer is Medicare, a commercial plan, or a workers' comp carrier.
PT clinics bill a large number of low-dollar units every week, so a small error repeated across hundreds of units adds up fast. Our process is built to catch it before it compounds.
Therapy benefits, visit caps, and authorization status checked before the first treatment session is scheduled.
Units, modifiers, and diagnosis codes pulled directly from documented time and clinical findings, not from a template.
Cumulative charges tracked against the KX and review thresholds, so the modifier goes on before a claim needs it, not after a denial.
Remittances checked line by line against the expected rate, including the assistant differential, so underpayments get caught instead of absorbed.
Denials worked by reason code, appealed with the documentation each one requires, and aging accounts followed until resolved.
A clinic shouldn't have to spend months explaining what a certification deadline is. We start by reviewing your current denial pattern and fix what's causing it.
PT, OT, and speech each carry their own modifier and documentation rules. We staff accounts with billers who track all three instead of treating rehab as one generic service line.
Certification windows, recertification dates, and progress report cycles are monitored on a calendar, not discovered after a claim comes back.
You see where revenue is coming from, where it's stalling, and which payer or code is driving denials, scaled to your practice's size and payer mix.
If denials, mismatched units, or missed authorizations are slowing down collections, we can review a sample of your recent claims and show you exactly where the revenue is going. Get a billing process matched to how physical therapy is actually documented and paid.
