Skip to content Credex Healthcare provides occupational therapy billing services for private OT practices, hospital outpatient therapy departments, skilled nursing facilities, pediatric therapy centers, and home health OT programs dealing with evaluation code selection errors, Medicare therapy cap compliance problems, and prior authorization gaps on treatment plans that should have been approved before the first session began.
Our occupational therapy billing helps you improve workflow efficiency, reduce administrative errors, and enhance client care while maintaining HIPAA compliance.
First-pass claim approval rate
Average OT billing turnaround
Medicare, Medicaid & commercial networks
Therapy cap tracking & prior authorization management
Credex Healthcare runs a dedicated occupational therapy billing process that reviews each session note before the charge entry. Our OT billing specialists confirm that the evaluation code selected matches the documented complexity level based on the patient’s occupational profile, the number of performance areas assessed, and the clinical decision-making documented in the evaluation report. For treatment visits, we verify that time-based procedure codes are supported by the exact number of minutes documented in the session note and that the GP modifier is applied correctly on all Medicare outpatient therapy claims. Occupational therapy billing errors and fixes are expensive at scale. A time-documentation error on a 97530 code that repeats across 200 sessions a month compounds into significant revenue loss before anyone notices.
Our occupational therapy billing services in the USA cover the following:
Claims go out with verified CPT codes, correct evaluation complexity levels, time-based unit counts supported by session documentation, and GP modifier applied to all Medicare outpatient therapy claims. Our team tracks adjudication in real time and follows up before timely filing windows close.
We manage provider enrollment for occupational therapists and OTAs with Medicare, Medicaid, and commercial carriers, including supervision documentation requirements for OTA billing under Medicare's differential payment rules.
Denied OT claims are reviewed within 48 hours. Whether the rejection stemmed from a time documentation gap, an incorrect evaluation level selection, a missing prior authorization, or a therapy cap compliance error, our team corrects it and resubmits it with the clinical documentation that the specific payer requires.
Our certified coders audit session notes against occupational therapy CPT codes 97165, 97166, 97167, 97530, and 97535, confirming that evaluation complexity, time documentation, and functional goal documentation support each code and unit count billed.
Commercial payers and some Medicaid programs require prior authorization for occupational therapy treatment plans beyond an initial evaluation period. We initiate and track authorizations before treatment begins, so no session is denied for missing payer approval on an active treatment plan.
End-to-end RCM covers eligibility verification, therapy plan documentation review, time-based charge capture, Medicare therapy cap and KX modifier tracking, payment posting, and monthly reporting so practice administrators have accurate collections data by payer each billing cycle.
As a dedicated occupational therapy billing company in the USA, Credex Healthcare tracks Medicare guidelines for occupational therapy billing as CMS updates them, monitors commercial payer prior authorization requirement changes for OT treatment plans, and maintains current outpatient therapy billing compliance standards for the full occupational therapy CPT code set. Medicare coverage for occupational therapy services requires that each session be documented as medically necessary, that the patient is making measurable progress toward functional goals, and that OTA-provided services are billed with the CQ modifier and reimbursed at 85% of the OT rate. Applying those rules incorrectly across a high-volume outpatient therapy practice is a compliance exposure that accumulates quickly.
Medicare covers occupational therapy services under Part B for medically necessary treatment with functional limitation documentation. We manage Medicare OT billing with correct GP modifier application, KX modifier for therapy cap exceptions, CQ modifier for OTA-provided services, and annual therapy cap threshold tracking for every Medicare patient on census.
Medicaid occupational therapy coverage and prior authorization requirements vary by state and by patient population. Pediatric OT through school-based programs, early intervention, and Medicaid waiver programs each carry different billing rules. Our team maintains state-specific Medicaid OT billing standards and applies them correctly to every claim.
Pediatric occupational therapy billing covers outpatient clinics, school-based, and early intervention settings, each with different code sets, payer rules, and documentation standards. School-based OT may bill Medicaid under the school billing pathway. We manage pediatric OT billing across all service settings.
Occupational therapy in skilled nursing facilities is bundled into the PDPM rate under Medicare Part A. For home health OT, billing follows the OASIS-based home health episode payment system. We manage OT billing in each care setting under the correct payment methodology rather than applying a standard outpatient billing approach.
Occupational therapy claims fail for specific, preventable reasons: evaluation codes billed at the wrong complexity level, time units not matching the documented minutes in the session note, GP modifier missing on Medicare outpatient claims, KX modifier not applied when the therapy cap is exceeded, and prior authorizations not in place before treatment begins. Credex Healthcare reviews all of those before any claim goes out.
Every OT and OTA in your practice is verified for active enrollment with each payer, correct therapy specialty taxonomy, and Medicare Part B billing eligibility before claims are submitted under their provider number.
We audit OT evaluation reports against CPT 97165 (low complexity), 97166 (moderate complexity), and 97167 (high complexity), confirming that the documented occupational profile, number of performance areas assessed, and clinical decision-making complexity match the level billed per the AMA code descriptor requirements.
CPT 97530 and 97535 are time-based codes billed in 15-minute units. Each unit requires at least 8 minutes of direct, one-on-one treatment time, as documented in the session note. We verify that the number of units billed is supported by the documented treatment time for each procedure code on every claim.
Medicare outpatient OT claims require the GP modifier on every line. The KX modifier is added when the annual therapy cap threshold is reached to confirm medical necessity supports continued treatment. The CQ modifier identifies OTA-provided services. We track all three for every Medicare patient and apply them correctly at each billing point.
Prior authorization for occupational therapy services is tracked by the patient and the payer. Commercial payers that require PA for treatment plans beyond the evaluation receive authorization requests before the first treatment session begins. Authorization renewals are tracked against the approved visit count.
Accounts Receivable Follow-Up
OT AR is reviewed weekly. Unpaid claims are followed up on before the timely filing limits close. Therapy cap denial appeals and time documentation disputes are escalated with the session note and Medicare therapy billing policy documentation that supports the original claim.
Occupational therapy practices lose revenue to billing errors that recur from session to session without anyone catching them. Evaluation codes billed at 97166 when the session note documents a low-complexity occupational profile that only supports 97165, reducing reimbursement on every new evaluation. Time units submitted as three on a 97530 code when the session note documents 38 minutes, meaning one full unit was never billed. GP modifier missing from a subset of Medicare claims because the billing template was not set up to apply it automatically. Credex Healthcare’s occupational therapy billing process catches all three at the charge-entry stage before they compound over a month of visits.
End-to-end occupational therapy insurance billing from session note review and evaluation level verification through time-based unit calculation and electronic submission to Medicare, Medicaid, and commercial payers for every OT encounter.
Our occupational therapy billing specialists apply the correct CPT codes, evaluation complexity levels, time-based units, and required modifiers for every encounter type and payer, cutting the denials from therapy billing documentation requirement errors.
Prior Authorization Management
Prior authorization for therapy services is tracked from initial request through approval and linked to the treatment plan. Renewal requests are initiated before the approved visit count is reached, so no session is billed against an expired or missing authorization.
Denial management for occupational therapy claims covers evaluation-level disputes, time-documentation corrections, Medicare modifier errors, and therapy cap compliance appeals. Each appeal is built around the session note language and payer or Medicare policy that reverses the denial.
Provider application management covers OT enrollment, OTA billing setup under Medicare's CQ modifier and 85% payment rules, group NPI configuration, and ongoing recredentialing so your practice bills without interruption as staff changes or payer agreements renew.
Monthly reports cover collections by provider and payer, evaluation code distribution, time-based unit accuracy, therapy cap status by Medicare patient, denial trends by CPT code, and occupational therapy billing turnaround time, so practice owners have the data to manage the business.
Years of OT Billing Expertise
Provider Enrollment & Credentialing Success
Claim Compliance Rate Across All Payer
Support Available for All Your Needs
Customized OT Revenue Cycle Solutions
OTD
Amara
“We had a recurring problem with our OT evaluation coding. Our therapists consistently selected 97166 as moderate complexity, even though a significant portion of our evaluations were actually low in complexity under the AMA criteria. Credex reviewed the evaluation documentation against the code descriptors, identified that about 35% of our evaluations were being uncoded by one level, and corrected the selection criteria in our intake workflow. The compliance fix mattered as much as the revenue correction; we were carrying real audit risk and did not know it.”
Practice Manager
Sandra
“Pediatric OT billing across school-based, outpatient, and early intervention settings is complicated by different payer rules for each setting. Our billing team was applying outpatient billing rules to school-based claims, resulting in constant Medicaid denials. Credex separated the billing by setting type, applied the correct Medicaid school billing pathway for school-based claims, and our pediatric Medicaid denial rate dropped from 22% to under 5% in the first two months.”
Revenue Cycle Director
James
Our OT department was missing the KX modifier on Medicare claims after patients hit the therapy cap threshold. The billing system was not set up to flag when the annual cap was approaching, so therapists kept treating and billing without the modifier, causing denials that we then had to appeal one by one. Credex implemented therapy cap tracking per patient and built the KX modifier trigger into the billing workflow, and the therapy cap denials stopped. That alone freed up significant AR that had been stuck in appeal.
OTD
Chidera
“Hand therapy billing involves specific CPT codes for therapeutic exercise, manual therapy, and splint fabrication, which most billing companies lump together incorrectly. Credex understood the hand therapy code set, applied the correct codes for each intervention, and verified that the time documentation in the session notes supported the units billed. My denial rate on hand therapy claims went from 17% to under 4%, and the collections per visit went up because we stopped underbilling the splint fabrication codes.”
CFO
Diallo
“Running OT billing across four locations with a mix of Medicare, Medicaid, and commercial payers meant four different authorization-tracking systems and no consistent modifier compliance across sites. Credex standardized the billing workflow, set up therapy cap tracking for every Medicare patient across all four locations, and built a monthly report that shows time-based unit accuracy and denial rates by site. The consistency across locations made a real difference in both compliance and monthly collections.”
Practice Assessment
We review your current OT billing process and check things like the accuracy of the codes you choose, how you record time-based units, Medicare modifier compliance, therapy cap tracking status, prior authorization gaps, AR aging by payer, and denial history by CPT code. This shows exactly where the money isn't coming in.
Credentialing & Payer Enrollment
Every OT and OTA is checked to ensure they are currently enrolled with all payers, use the right treatment taxonomy, and set up their Medicare CQ modifier billing. Before new claims are sent in, any gaps in service application management are addressed.
Compliance & Authorization Setup
We look at how you track your Medicare therapy cap, create a calendar with per-patient cap thresholds, list all insurance companies that need prior authorization for OT treatment plans, and set up a tracking system to ensure that no session is charged against an authorization that is missing or has expired.
Clean Claim Submission
Our OT billing experts review every session note, ensure the level of difficulty of the evaluations matches the number of minutes recorded, verify that the correct GP, KX, and CQ factors are used, and send bills online to Medicare, Medicaid, and private insurers for every visit.
Denial Management & Follow-Up
As a claim moves through the process, it is tracked. Within 48 hours, denials are looked over again. There is a specific way to handle evaluation complexity disputes, time documentation changes, Medicare modifier mistakes, and prior authorization appeals. This is because they are all based on the session paperwork and the payer or Medicare treatment billing policy.
Reporting & Ongoing Optimization
The monthly reports show how much money was collected by the provider and customer, the distribution of evaluation codes, the time-based unit accuracy rate, the status of treatment cap compliance, rejection trends by CPT code, the time it takes to bill for occupational therapy, and the age of accounts receivable. At the session-note level, documentation trends that lead to repeated refusal are fixed.
It’s not enough to just pick a treatment process code and add the time for occupational therapy bills. It’s important to keep track of therapy caps, prior-permission for treatment plans, evaluation difficulty levels, time-based unit estimates, Medicare marker compliance for GP, KX, and CQ, and the difference between OT and OTA billing rates for every session. A general billing company uses a standard treatment-billing process and does not account for the unique compliance needs of occupational therapy. Credex Healthcare specializes in medical billing for occupational therapy because this field needs experts who understand Medicare rules for occupational therapy billing in real outpatient settings.
It's our job to handle requests for physical therapy. We understand how Medicare and AMA determine the three evaluation complexity levels, how time-based unit rules apply to 97530 and 97535, how therapy cap thresholds trigger the KX modifier, and where occupational therapy billing mistakes happen most often in session documentation and charge capture workflows.
There is one occupational therapy billing expert who works only for your practice. This person knows all of your patients, your payer panel, your treatment cap status, and the trends of claims that keep getting denied. Problems are handled by someone who knows about OT bills and professional matters.
In monthly reports that show the practice's actual financial and compliance situation, practice owners can see how much money is collected by provider and payer, how evaluation codes are distributed, how accurate time-based units are, how Medicare patients' therapy caps are doing, how often claims are denied by CPT code, and how long it takes to bill for occupational therapy.
Full HIPAA compliance procedures shield all therapy records, evaluation reports, and session notes for patients that are handled during the payment process. Every system that handles claims for your business follows strict security rules and allows only certain people to access it.
Occupational therapy practices lose revenue through billing patterns that recur in every session without surfacing as obvious problems. Evaluation codes are billed one level higher than the documentation supports. Time units entered as 3, even though the session note documents only 38 minutes of one-on-one treatment. The GP modifier is missing from a subset of Medicare claims because no one audited the billing template. These are workflow problems that compound across hundreds of visits per month before they show up in the AR.
Credex Healthcare starts with a free review of your current OT billing: evaluation code accuracy, time-based unit documentation review, Medicare modifier compliance check, therapy cap tracking status, prior authorization gaps, and AR aging by payer. No commitment required to get that review. We identify recoverable revenue and the specific workflow corrections that prevent those losses from recurring.
It is the job of occupational therapists and occupational therapy assistants (OTAs) to send bills for OT evaluation and treatment services to Medicare, Medicaid, and private payers. This is called “billing.” CPT codes are assigned to each session based on the types of services offered and the duration of each session. For example, initial exams are given evaluation codes at one of three difficulty levels, and treatment sessions are given time-based procedure codes that are paid in 15-minute increments. CMS’s therapy billing guidelines make sure that outpatient therapy billing is done correctly for Medicare. These guidelines state that each session must be medically necessary and show measured progress toward functional goals. They also say that functional limitations must be documented.
Evaluation codes and time-based treatment process numbers are used to bill for occupational therapy. At a low level of difficulty, CPT 97165 is the occupational therapy exam. CPT 97166 is an exam of middling difficulty. CPT 97167 is an exam with various moving parts. The level of difficulty is based on the patient’s job, the number of performance areas tested, and the clinical decisions made during the evaluation. Therapeutic tasks involving direct patient interaction for effective success are covered by CPT 97530. Self-care and home management training for activities of daily living and reintegrating back into the community are covered by CPT 97535.
Yes. Medicare Part B covers private occupational therapy treatments that are medically necessary and are given by a trained OT or OTA. For coverage to apply, the patient’s health must be expected to improve, useful goals must be written down and measured, and success must be recorded by the therapist in each session. Medicare has an annual therapy cap that limits how much it will pay for PT and OT together. There is an exception process called the KX modifier that can be used when medically necessary treatment continues past the cap.
When evidence supports the time units billed and necessary factors are used properly, Medicare processes clean electronic OT claims in 14 to 30 days. When prior permission is on file and session notes to back up the codes provided, commercial payers usually pay within 30 days. When Medicaid applications are due varies by state, but they are usually due within 30 to 60 days. All three are addressed by Credex Healthcare’s session note review and modifier compliance tracking before claims are made. This keeps most OT claims within the normal occupational therapy billing timeline.
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