Occupational therapy is often treated as a variation of physical therapy when practices pick or build software. The billing rules overlap, but the clinical work does not. OT is organized around the activities a person needs and wants to do, from dressing and cooking to returning to work or school, and documentation that only tracks range of motion and strength misses most of what an occupational therapist records.
This guide explains what an occupational therapy EHR needs to handle: how OT documentation differs, the evaluation codes, plan of care certification, the Medicare threshold and KX modifier, the CO modifier for OT assistants, setting-specific workflows and the integrations that connect an OT practice to referring physicians and payers.
What is an occupational therapy EHR?
Connecting an OT system to referrers and payers?
Agnotic builds EHR integrations for therapy practices: referral intake, plan of care routing, eligibility and claims.
An occupational therapy EHR is a clinical record and practice system built around OT workflows: occupational profiles, evaluations coded by complexity, goals tied to daily activities, treatment notes with timed codes, plans of care that need physician certification, and billing that applies Medicare therapy rules such as the KX threshold and the CO modifier.
Practices usually run one of three setups: a therapy EMR shared by PT, OT and speech therapy, a general ambulatory EHR with therapy templates added, or a hospital system's rehab module. Each can work, provided the OT-specific pieces described below are present and not bolted onto PT forms.
How does OT documentation differ from physical therapy?
OT documentation differs from physical therapy because it starts from what the patient needs to do in daily life rather than from a body system. The occupational profile captures roles, routines, environment and priorities, and goals are written in terms of activities, such as dressing independently or returning to a keyboard job.
- Occupational profile: History, roles, routines, home and work environment and the patient's own priorities.
- Activity analysis: Performance in daily activities and instrumental activities such as meal preparation, medication management and community mobility.
- Standardized assessments: Scores from validated tools stored as structured results, not only as narrative.
- Environment and equipment: Home safety findings, adaptive equipment and orthoses with fitting and training notes.
- Cognition and vision: Screening results that affect safety and goal setting.
If the EHR only offers PT templates with an OT label, therapists end up writing everything into free text. That loses the structure needed to show progress, defend medical necessity and report outcomes.
Treatment notes need the same care. An OT session might combine therapeutic activities, self-care training and orthotic management in one visit, each a separate timed code. The note should let the therapist record minutes and the activity for each code as they go, then tie each activity back to a goal so progress reports can be assembled from the notes instead of rewritten from memory.
Which evaluation codes should the EHR support?
The EHR should support the four OT evaluation codes introduced in CPT in 2017: 97165 for low complexity, 97166 for moderate complexity, 97167 for high complexity and 97168 for re-evaluation. They replaced the older single evaluation and re-evaluation codes.
Complexity depends on documented elements: the depth of the occupational profile and history, the number of performance deficits identified, and the clinical decision making involved, including whether modification of tasks or assistance was needed during the assessment. A good evaluation template prompts for each element and suggests a complexity level from what was recorded, leaving the final choice to the therapist.
Re-evaluation should not be a routine event. Build the workflow so a re-evaluation is triggered by a documented change in condition or a plan revision, which keeps 97168 aligned with how payers expect it to be used.
How should plans of care and certification work?
Plans of care should be created from the evaluation and routed to the referring physician or practitioner for certification. Under 42 CFR 424.24(c), outpatient therapy services under Medicare require a plan of care certified by a physician or nonphysician practitioner, and recertification is needed at least every 90 days.
The same regulation removes the signature requirement for the initial certification when a signed and dated order or referral is on file and the therapist sends the plan to the practitioner within 30 days of the initial evaluation. The EHR should record which path applies, when the plan was sent and when it was signed.
- Certification tracking: Status of each plan with sent, signed and due dates visible on the patient's chart and the schedule.
- Recertification alerts: Warnings well before 90 days, and before any change to frequency, duration or goals.
- Delivery proof: Fax confirmations, Direct messages or portal receipts stored with the plan.
- Claim hold: Optional hold on claims when a required certification is missing or late.
How do the KX threshold and medical review affect OT?
The Medicare therapy threshold sets a yearly amount above which claims need the KX modifier to confirm the services remain medically necessary. On its therapy services page, CMS lists a CY 2026 KX modifier threshold of $2,480 for occupational therapy, tracked separately from the combined $2,480 for physical therapy and speech-language pathology.
CMS also lists a $3,000 threshold for targeted medical review. Because OT is counted on its own, an OT EHR must track each patient's year-to-date OT amount separately, including services from other providers where the practice can learn of them through eligibility responses.
Show the running total on the patient's chart and the schedule, prompt the therapist to confirm that documentation supports continued care as the threshold approaches, and apply the KX modifier on claims only when that documentation exists.
What does the CO modifier mean for OT assistants?
The CO modifier marks services furnished in whole or in part by an occupational therapy assistant. CMS guidance in MLN MM12397 explains that when an OT assistant furnishes more than 10 percent of a service, the service carries the CO modifier and, since January 1, 2022, is paid at 85 percent of the usual amount.
Getting this right needs minute-level documentation of who furnished each part of a timed service. The EHR should capture therapist and assistant minutes separately for each code, apply the 10 percent test, and follow the CMS rules for assigning the final billing unit when minutes are split.
Manual calculation is error prone, and errors cut both ways: missing the modifier is an overpayment, while adding it when not needed loses revenue. Automate the calculation and show the result in the note so the therapist can confirm it.
Supervision rules add another layer. Supervision requirements for assistants vary by setting and by state practice act, so the EHR should record the supervising therapist for each assistant visit and let the practice configure the rules that apply in each location rather than assuming one national standard.
Which OT settings need different workflows?
OT practice spans settings with different documentation and payment patterns, and an EHR that serves several of them needs setting-specific templates and rules.
- Outpatient clinics: Medicare and commercial plans with plans of care, thresholds and visit authorizations.
- Hand therapy: Custom orthosis fabrication, wound and edema measures, and detailed range and strength data.
- Pediatrics: Developmental goals, school and family communication, and Medicaid or school-based billing.
- Home health and skilled nursing: Setting-specific assessment instruments and payment models run by the agency's own systems.
- Work rehabilitation: Job demands, return-to-work restrictions and workers' compensation reporting.
Pediatric OT is a common gap in therapy software designed for adults. Goals, parent communication and school reports look very different, and practices often need separate templates and portal views for families.
What should OT EHR integration cover?
OT EHR integration should cover the path from referral to payment and the communication with referring practitioners. Most of the administrative work in a therapy practice is moving information between systems that do not talk to each other.
- Referral intake: Orders from hospital and physician EHRs by fax, Direct messaging or FHIR, turned into structured referrals.
- Plan of care routing: Plans and progress reports sent back to the referrer and signatures captured.
- Eligibility and benefits: Visit limits, authorizations and therapy amounts used from eligibility responses.
- Claims and remittances: Electronic claims through a clearinghouse with modifiers applied, and payments posted from remittances.
- Outcome reporting: Standardized assessment scores exported for registries, payers or internal quality work.
Hospital-affiliated OT groups often need to read discharge summaries and precautions from the hospital EHR before the first visit. A FHIR or HL7 feed that delivers those into the referral record saves calls and reduces safety risks.
Start with the integration that removes the most manual work. For most practices that is referral intake, since staff otherwise retype demographics, insurance and orders from faxes. Once referrals arrive as structured data, plan of care routing and eligibility checks can run from the same record.
Should you buy, extend or build an OT EHR?
Most outpatient OT practices should buy a therapy EMR with solid OT support, then extend it with integrations. Building makes sense for organizations with unusual models, such as large pediatric networks, school-based programs or digital therapy companies, where off-the-shelf tools fit poorly.
Before deciding, test candidate systems with real OT cases: a pediatric evaluation, a hand therapy episode and a Medicare outpatient case that crosses the threshold with an assistant involved. Gaps show up quickly when therapists document actual patients rather than following a vendor demo.
Also ask how the vendor handles yearly changes. Thresholds, codes and payer rules shift every January, and a system that needs a paid upgrade or a support ticket for each change will cost more over time than its subscription suggests. Look for rules tables the practice can review and, where appropriate, adjust itself.
How Agnotic can help
Agnotic Technologies builds integrations and custom modules for therapy practices and rehab software companies: referral intake from hospital EHRs, plan of care routing and signature tracking, threshold and modifier logic, and outcome data exports.
We work alongside your existing EMR where it fits, and build OT-specific templates or full systems where it does not, with clinicians reviewing each workflow before release.
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Explore our EHR integration services, or read more articles on EHR integration.
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