Occupational Therapy
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This Aetna clinical policy bulletin governs medical necessity, limitations, coding references, and background evidence for occupational therapy (OT) services for Aetna members and applies to providers who deliver or authorize OT services.
No material clinical or coverage changes in this revision.
Coverage Criteria
Medical Necessity — General OT
Aetna considers occupational therapy medically necessary when ALL of the following are met:
Includes requirement for an ongoing, written plan of care reviewed with and approved by the treating physician and documentation of objective and subjective data to demonstrate medical necessity.
Not covered / Not medically necessary conditions — OT
OT is considered not medically necessary in the following situations:
Benefit limits and exclusions may vary by plan (e.g., some HMO/QPOS plans apply a 60-day rehabilitation limit).
Standard Aetna policy excludes coverage for educational training or services. Under plans with this exclusion, occupational therapy provided in educational settings is not covered. Additionally, driver training is excluded because driving is not considered a basic activity of daily living and therefore is not treatment of disease.
A pragmatic cluster randomized controlled trial (Sackley et al., 2016) evaluated a personalized, 3-month course of occupational therapy delivered to care-home residents with stroke-related disabilities. The trial found no significant difference between intervention and usual-care groups on the primary outcome (Barthel Index) at 3 months or on secondary outcomes at later time points, and the economic analysis did not demonstrate meaningful QALY gains. The authors concluded that the individualized 3-month OT course showed no benefit in maintaining functional activity in this older care-home population.
Occupational therapy that is maintenance-only or non-skilled is not considered medically necessary. Services intended primarily to address instrumental activities of daily living (IADLs) (for example, meal preparation, laundry, balancing a checkbook), leisure activities (hobbies, sports, recreation), or driving instruction are excluded from coverage. OT for asymptomatic persons or those without an identifiable clinical condition is also not covered.
Coding
| G0129 | Occupational therapy requiring the skills of a qualified occupational therapist, furnished as component of a partial hospitalization treatment program, per day |
| G0152 | Services performed by a qualified occupational therapist in the home health or hospice setting, each 15 minutes |
| G0160 | Services performed by a qualified occupational therapist, in the home health setting, in the establishment or delivery of a safe and effective therapy maintenance program, each 15 minutes |
| S9129 | Occupational therapy, in the home, per diem |
| G0158 | Services performed by a qualified occupational therapist assistant in the home health or hospice setting, each 15 minutes |
| G2169 | Services performed by an occupational therapist assistant in the home health setting in the delivery of a safe and effective occupational therapy maintenance program, each 15 minutes |
| A80.0-A80.9 | Acute poliomyelitis |
| B91 | Sequelae of poliomyelitis |
| G12.21 | Amyotrophic lateral sclerosis |
| G14 | Postpolio syndrome |
| G35 | Multiple sclerosis |
| G80.0-G80.9 | Cerebral palsy |
| Q05.0-Q05.9 | Spina bifida |
| Z51.89 | Encounter for other specified aftercare |
| F70-F79 | Intellectual disabilities |
| F80.0-F84.9 | Pervasive and specific developmental disorders |
| F90.8 | Attention-deficit hyperactivity disorder, other type |
| R27.0-R27.9 | Other lack of coordination |
| R47.9 | Unspecified speech disturbances |
Provider Actions & Documentation
Prior Authorization & Medical Necessity
Coverage for the CPT and HCPCS codes listed in this policy is contingent on meeting the medical necessity criteria described in the policy and supported by an ongoing, written plan of care. Prior authorization requirements, where applicable under the member’s benefit plan, will be tied to those medical necessity determinations—providers should consult the full policy and the member’s certificate of coverage for any specific prior authorization procedures.
- Prior authorization required when plan/benefit design specifies and only when medical necessity criteria are met.
- Check member’s certificate of coverage and prior authorization portals for plan-specific submission requirements.
Medical Necessity Linked to Written Plan of Care
Occupational therapy must be provided in accordance with an ongoing, written plan of care that is reviewed with and approved by the treating physician and signed by the attending physician and the occupational therapist. Medical necessity is dependent on documentation within that plan of care demonstrating a reasonable expectation of measurable improvement in a reasonable and predictable time frame.
- Plan of care must be specific to the diagnosis, presenting symptoms, and findings of the OT evaluation.
- The plan of care must be updated as the member’s condition changes and demonstrate progress toward therapy goals.
Documentation-Based Denial Risks
Failure to maintain the required plan of care or to document the elements listed below may result in denial of services as not medically necessary. Services that are maintenance-only, non‑skilled, or provided without reasonable expectation of measurable improvement are denial triggers.
- Lack of an ongoing written plan of care.
- Missing signatures from the attending physician and occupational therapist.
- Insufficient objective and subjective data demonstrating progress toward goals.
Plan of Care and Documentation Requirements
The required elements of the plan of care must be present and clearly documented to establish medical necessity and support claims.
- A reasonable estimate of when goals will be reached;
- Quantitative objectives and specific short-term and long-term goals;
- Date of onset or exacerbation of the disorder/diagnosis;
- Frequency and duration of treatment;
- Specific treatment techniques and/or exercises to be used.
- Re-evaluations at least monthly with documentation of progress toward goals.
Provider Responsibility Disclaimer
Clinical Policy Bulletins are tools to assist in administering plan benefits and do not replace clinical judgment. Treating providers remain solely responsible for medical advice and treatment decisions for their patients.
- Providers must follow state scope-of-practice and supervision requirements when delivering OT services.
- Consult plan benefits and program provisions; CPBs are not guarantees of coverage.
Background and Evidence
Occupational therapy uses purposeful activities to help individuals regain performance skills lost through injury or illness. Medically necessary OT must be restorative in nature or specifically directed to design and teach a maintenance program, be based on a written treatment plan, and require the professional judgment and skills of a licensed occupational therapist. Coverage typically focuses on interventions to improve basic activities of daily living (ADLs) such as bathing, dressing, feeding, grooming, mobility and toileting, rather than IADLs or educational services.
For emphasis, a randomized trial of a personalized, 3-month OT program for care-home residents with stroke-related disability found no benefit on the Barthel Index or secondary functional outcomes and reported minimal incremental QALY gain, supporting the trial authors' conclusion that this intervention did not maintain functional activity in that population.
Definitions
Revision History
Policy effective date set to 05/26/1998.
Policy last reviewed on 03/29/2023.
Next scheduled policy review dated 02/22/2024.
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