Occupational therapy is an important specialty in rehabilitative healthcare, helping patients regain their ability to perform daily activities, ultimately promoting their quality of life. But as important as it is, its CPT codes are often very specific, making it important for medical billers to understand the comprehensive list of occupational therapy CPT codes and how to use them properly.
According to a recent 2025 report from Experian Health, more than 41% of healthcare providers experienced claim denials exceeding 10% of everything they submitted for that year. While that is a significant revenue loss in itself, reworking each denied claim can cost anywhere between $25 and $35, plus the time spent filing for appeals. Taking these numbers into consideration makes the understanding of occupational therapy CPT codes a task not only to represent therapies properly on paper but also to distinguish a successful claim submission from a costly denial.
In this guide, let’s go over the most frequently used occupational therapy CPT codes, covering available codes, applications, prerequisites, and the most recent developments.
The Moving Parts of Occupational Therapy Billing
Before going over the occupational therapy CPT code list, let’s detail how exactly billing for this rehabilitative focus differs from other healthcare specialties.
Unlike other healthcare services that are billed per visit, occupational therapy services are often measured and billed based on how long each treatment takes. The standard unit of time used when billing for these is 15 minutes, so if a therapy session goes up to 45 minutes for one particular service, billers would bill for three units of the CPT code for the corresponding service.
This differentiator matters more than most people think because the accuracy of claims depends not just on using the right code but also on correctly calculating how many units to bill. It also depends on whether or not the claim is supported by the right documentation.
Getting delayed or insufficient reimbursements because of a miscalculated unit or having a denied claim due to poor supporting documentation are the kind of errors that quietly drain practice revenue month after month. For this reason, billers and coders must carefully review the patient documents to confirm:
- The exact services rendered by the occupational therapist
- The total treatment duration spent with the patient
- The medical necessity of the treatment
- Supporting doctor referrals or treatment plans
Apart from the above-mentioned, billers must also consider the proper use of modifiers. Some insurance companies require modifiers so they can tell occupational therapy services apart from physical or speech therapy treatments. Depending on payer guidelines, using the wrong modifier can get claims rejected even if everything else is correct. But when practices adopt a comprehensive functional documentation, they can see a denial rate reduction of up to 28%, making proper documentation a task worth spending time on.
What are Some CPT Codes for Occupational Therapy?
Occupational Therapy CPT Codes cover a wide range of services, such as patient evaluations, therapeutic interventions, orthotic and prosthetic management, and more.
Evaluation and Re-Evaluation Codes
| 97165 | Low Complexity Evaluation | This is used for straightforward initial patient evaluations, typically involving a single focus area of occupational therapy. |
| 97166 | Moderate Complexity Evaluation | Moderate complexity evaluations are coded using this number and involve assessments of multiple factors or areas of concern. |
| 97167 | High Complexity Evaluation | High complexity evaluations require a comprehensive assessment of multiple factors, potentially involving multiple therapists or disciplines. |
| 97168 | Re-Evaluation | Billers can use this code for re-evaluations conducted to assess patient progress and make changes to the treatment plan. |
Therapeutic Intervention Codes
| 97110 | Therapeutic Procedure | Therapeutic procedure for one or more areas, each spanning 15 minutes: This code represents typical occupational therapy interventions, including activities aimed at improving strength, endurance, and mobility. |
| 97112 | Neuromuscular Re-Education | Neuromuscular re-education of movement, balance, coordination, kinesthetic sense, posture, and proprioception: Therapists use this code when working on specific neuromuscular functions. |
| 97530 | Therapeutic Activities | Therapeutic activities, direct (one-on-one) patient contact (use of dynamic activities to improve functional performance), each 15 minutes: This code covers direct patient engagement in therapeutic activities. |
| 97535 | Self-Care/Home Management Training | Self-care/home management training (e.g., activities of daily living (ADL) and compensatory training, meal preparation, safety procedures, and instructions in use of assistive technology devices/adaptive equipment) direct one-on-one contact, each 15 minutes: Occupational therapists use this code for training patients in self-care and home management skills. |
| 97537 | Community/Work Reintegration Training | Community/work reintegration training (e.g., shopping, transportation, money management, vocational activities, and/or work environment/modification analysis, work task analysis, use of assistive technology devices/adaptive equipment), direct one-on-one contact, each 15 minutes: This code is applied when therapists help patients reintegrate into their communities or workplaces. |
| 97124 | Massage | Massage, including effleurage, petrissage, and/or tapotement (stroking, compression, percussion): Therapists use this code when providing massage as part of the treatment. |
| 97012 | Mechanical Traction | Application of a modality to one or more areas; traction, mechanical: This code is used when mechanical traction is applied to a patient. |
| 97014 | Electrical Stimulation (Unattended) | Application of a modality to one or more areas; electrical stimulation (unattended): Unattended electrical stimulation is reported with this code. |
| 97760 | Orthotic Management and Training | Orthotic(s) management and training (including assessment and fitting when not otherwise reported), upper extremity(s), lower extremity(s), and/or trunk, each 15 minutes: Therapists use this code when providing orthotic management and training. |
| 97763 | Prosthetic Training | Prosthetic training, upper and/or lower extremity(s), each 15 minutes: This code is applied when therapists are involved in prosthetic training for patients. |
What Are Billing Errors Costing Occupational Therapists?
When claim denials become a frequent occurrence, it creates a significant bottleneck on the revenue of occupational therapy practices. According to a Healthcare Finance article, denied claims cost approximately $262 billion annually, and that doesn’t account for the time staff members spend reworking claims and submitting appeals.
The errors that cause claim denials tend to come from the same issues
- Miscalculating the units for timed codes, resulting in under- or overbilling
- Weak documentation that cannot support the code being billed
- Using codes that don’t fully represent the service rendered
- Not having modifiers for services that overlap with physical or speech therapy
- Mixing up therapy codes that appear similar but have different billing requirements
Beyond reimbursement, accurate CPT coding also improves communication between providers, coders, billers, and insurance companies. Because occupational therapy treatments are highly specific, standardizing how they’re coded ensures they’re accurately represented across clinical and administrative workflows.
How Do Insurance Companies Evaluate Occupational Therapy CPT Codes?
Insurance companies closely review occupational therapy CPT codes to determine whether or not the treatment rendered satisfies their requirements for medical necessity and coverage. Because of the very specific nature of these codes, payers evaluate not just the codes themselves but also the supporting documentation tied to the patient’s condition and treatment plan.
Some payers may require:
- Prior authorization before the first therapy session
- The proper modifiers for codes that overlap with physical and speech therapies
Based on a resource from Fierce Healthcare, denials related to outpatient coding rose 26% from 2024 to 2025, while denials tied to medical necessity and requests for information rose 70%. OT practices are particularly exposed here because of the individualized, time-based nature of treatment.
What Else Should Be Documented for CPT Coding?
While occupational therapy CPT codes are already very specific, accuracy still depends on how well the treatment session was documented. Having incomplete records can result in denied claims, insufficient or delayed reimbursements, or compliance issues.
Occupational therapists should document each session to include:
- Their evaluations and assessment of the patient’s condition
- The treatment goals and care plans developed for the patient
- The patient’s progress and response to their care plan
- Any changes made to the care plan
Documenting the patient’s progress and updates to their treatments helps justify the medical necessity of continued treatment. This also allows therapists, coders, and insurance providers to get a better understanding of how the patient is responding to the care plan and whether treatment adjustments are necessary.
How Often Are Occupational Therapy CPT Codes Updated?
Like billing codes for other healthcare specialties, occupational therapy CPT codes can change from time to time to accommodate changes in industry regulations, payer policies, and treatment standards. Every now and then, new codes are added to the definitive list, existing codes are changed, descriptions get revised, and reimbursement procedures change.
To stay on top of any of these changes, occupational therapists, coders, and billers should consider the following steps:
- Referencing the American Medical Association (AMA) CPT Code Manual
Every year, the AMA publishes a CPT Code Manual that details a complete and current list of CPT codes. This manual is widely used across the healthcare industry and is considered the definitive source for medical coding.
- Maximizing Electronic Medical Record (EMR) or Billing Software
Most, if not all, healthcare practices in the U.S. rely on electronic medical record (EMR) or medical billing software, and these often include a database of CPT codes that is updated regularly, giving billers access to the most accurate occupational therapy CPT code list. - Considering Professional Organizations
Occupational therapy professional organizations often publish coding updates, compliance reminders, and documentation recommendations. These resources can be very useful in helping billers code accurately and comply with evolving documentation standards.
Some practices also consider working with companies like My Mountain Mover because they provide virtual medical billers who stay on top of updates from the AMA and changes to the list of healthcare CPT codes.
What Common Challenges Affect Occupational Therapy Billing?
By nature, occupational therapy billing is complex because no patient treatment plan is the same. They differ from one person to another, making it important for therapists, coders, and billers to work closely together to make sure patient documentation accurately reflects the services rendered.
Some of the most common occupational therapy billing challenges include:
- Incorrect unit calculations for timed codes
- Missing details in treatment documentation
- Using CPT codes that don’t fully represent the service rendered
- Having the wrong modifier
Some practices also struggle with differentiating occupational therapy treatments that appear similar but are actually coded differently. Some therapies may appear similar operationally despite having different coding requirements, which is why billers and coders must ensure they are using the code appropriate for the treatment rendered.
To resolve these issues, many practices create internal workflows that support stronger communication between therapists, coders, and billing teams, helping them stay aligned about the occupational therapy service performed, how long it took, and the corresponding code.
Frequently Asked Questions
Can occupational therapy CPT codes differ between insurance providers?
Like CPT codes for other healthcare specialties, the ones for occupational therapy are standardized across the industry, so no, they cannot differ between payers. However, what varies are the different rules regarding modifier usage, authorization requirements, visit limitations, and documentation requirements. For this reason, billers should review the policies of each insurance provider before submitting occupational therapy claims.
Why are timed CPT codes especially important in occupational therapy billing?
Occupational therapy services are billed based on treatment duration, not the number of visits. If incorrect unit calculations are submitted, practices may experience claim denials, reimbursement delays, or underbilling.
Do occupational therapy CPT codes only apply to physical rehab?
No. Just like the specialization, occupational therapy CPT codes also apply to treatments for cognitive function, sensory integration, mobility device training and adaptive equipment instruction. Depending on the patient’s condition, occupational therapy services can be rendered for both physical and non-physical functional limitations.
Can multiple occupational therapy CPT codes be used during one session?
Yes. One occupational therapy session may have multiple CPT codes if multiple therapeutic services are provided at the same time. However, each service should be documented clearly and separately to show that it addressed a distinct therapeutic goal.
