CurrentCignaPolicy N/A

Therapy Services — Physical Therapy (Coverage Criteria)

Governs medical necessity, coverage, and coding expectations for outpatient, inpatient, habilitative, and selected device-related physical therapy services under Cigna-administered benefit plans; applicable to providers submitting claims and seeking reimbursement.

Policy Summary

PayerCigna

PolicyTherapy Services — Physical Therapy (Coverage Criteria)

Policy CodePolicy N/A

Change TypeNo material clinical or coverage changes

Effective DateSep 15, 2025

Next Review DateDec 15, 2025

Key ActionLimit outpatient physical therapy visits to a maximum of four timed codes (approximately 60 minutes) per date of service; document plan of care and session details to support medical necessity.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

4max timed PT units / date

2-4 wkre-eval timeframe

improve by 3 visitsexpected early passive response

multipleexperimental therapies listed

>15therapy modalities described

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Coverage and Medical Necessity Criteria

Medically Necessary - Rehabilitative PT

Rehabilitative physical therapy is medically necessary when ALL of the following are met:

Rehabilitative PT medical necessity: The individual’s condition has the potential to improve or is improving and maximum improvement is yet to be attained; the program is individualized with quantifiable, attainable goals; improvement is evidenced by successive objective measurements; services are delivered by a qualified provider; the judgment, knowledge and skills of a qualified provider are necessary due to complexity and medical condition.

Medically Necessary - Habilitative PT

Habilitative physical therapy is medically necessary when ALL of the following are met:

Habilitative PT medical necessity: Therapy is intended to keep, learn, or improve skills and functioning for daily living that have not developed or are at risk of loss; services are evidence‑based and require the judgment, knowledge and skills of a qualified provider; there is an expectation therapy will improve, assist development of, or maintain function; when applicable a physician experienced in the condition has confirmed the function would not develop or would be permanently lost without the service; a written treatment plan documents short‑ and long‑term goals, frequency/duration and outcome measures; documentation objectively verifies functional status is kept or developed.

Not Medically Necessary

Conditions or situations considered Not Medically Necessary:

Not medically necessary scenarios: 1) The individual's condition does not have potential to improve or is not improving and further improvement is not attainable; 2) Condition is strictly behavioral without motor involvement affecting function (e.g., ADHD, anxiety); 3) Improvement expected with gradual resumption of normal activities without skilled therapy (transient losses); 4) Services that do not require the skills of a qualified PT (general exercise, fitness programs, massages for relaxation, public education); 5) Repetitive activities safely self‑administered without skilled supervision; 6) Documentation fails to objectively verify progress; 7) Modalities that are not preparatory to skilled treatment or provide minimal/no clinical value independently; 8) Services that are educational, vocational, or maintenance in nature (e.g., back school, work hardening, vocational rehab).

Experimental/Investigational/Unproven

Treatments considered Experimental, Investigational, and/or Unproven:

Experimental/Unproven treatments: Dry hydrotherapy/aquamassage/hydromassage; Dry needling; Elastic therapeutic tape/taping (e.g., Kinesio tape); Equestrian therapy/hippotherapy; H‑WAVE®; Intensive constraint‑induced movement therapy (CIMT) and intensive CIMT models; Intensive Model of Therapy (IMOT) programs; Low‑frequency non‑contact non‑thermal ultrasound (MIST); MEDEK Therapy; Microcurrent Electrical Nerve Stimulation (MENS); Non‑invasive Interactive Neurostimulation (e.g., InterX); Spinal manipulation for non‑musculoskeletal conditions; The Interactive Metronome Program; Vertebral axial decompression therapy and devices (e.g., VAX‑D, DRX series).

Hand Orthotic

Hand orthotic medical necessity criteria (custom fitted or custom fabricated):

Hand orthotic criteria: A custom‑fitted or custom‑fabricated hand orthosis is medically necessary when ALL of the following are met: the orthosis is prescribed to support, align, prevent or correct a deformity; there is evidence of a physical examination within the prior six months supporting the condition; one or more primary indications are present (e.g., substitute for weak muscles, support/immobilize structures, prevent contracture from neurologic injury, correct joint contractures, necessary for ADLs); and one or more additional criteria are met (e.g., post‑surgical need, unique components required, neurologic comorbidity, swelling/lymphedema, multiple‑joint involvement, serial splinting plan, frequent modification anticipated, skin impairment); clinical documentation demonstrates medical necessity beyond what an off‑the‑shelf orthosis would provide.

Medical Necessity Criteria — Physical Therapy

Covered when ALL of the following are met

General medical necessity: Services relate to a written plan of care established by a licensed physical therapist; are of complexity requiring PT judgment/skills; are reasonable in amount, frequency, and duration; are appropriate and needed for treatment (not merely palliative); and there is a reasonable expectation that treatment goals will be met.

Documentation requirements: Daily documentation must include date of service, total treatment time per date, identity of provider(s), specific interventions, modality names and parameters, area treated, and objective findings supporting necessity and progress toward goals.

Failure to properly document may result in adverse determination.

Timed services/day: Outpatient physical therapy is limited to up to 4 timed codes per day (approximately 60 minutes) consistent with CMS LCDs; services exceeding 60 minutes per day generally are not shown to provide additional benefit.<=4 timed codes/day

Exceeding this requires justification.

Medically necessary therapy services and modalities

Covered when ALL of the following are met (per modality/procedure statements in the document):

Therapeutic Exercise: Medically necessary for loss or restriction of joint motion, strength, functional capacity or mobility resulting from disease or injury; includes instruction, feedback, and supervision; exercises performed by the member without therapist supervision are not covered.

Neuromuscular Reeducation: Medically necessary for impairments affecting the neuromuscular system (e.g., poor static/dynamic balance, loss of coordination) resulting from disease, injury, or surgery; requires skilled intervention to develop conscious control and awareness of movement.

Aquatic Therapy: Provided for debilitated or neurologically impaired individuals to develop/maintain muscle strength and range of motion by reducing gravity; not intended for recreational exercise.

Gait Training: Medically necessary for individuals with impaired walking due to neurologic, integumentary, muscular, skeletal abnormalities, surgery, or trauma; includes assistive device training and assessment of muscle and joint function during ambulation.

Wheelchair Management Training

Covered when ALL of the following are met:

Wheelchair Management Training Medical Necessity: Training is part of an active treatment plan directed at a specific goal and the member has capacity to learn; documentation supports the need for training to achieve functional goals.

Typically three (3) sessions are adequate.

Electrodiagnostic Testing

EMG/NCV coverage condition:

EMG/NCV Coverage: Electromyography (EMG) and nerve conduction velocity (NCV) testing is covered only when performed by a qualified health care professional or physician with on‑site real‑time waveform review and report preparation; physical therapists who are APTA board certified are considered qualified and state licensure rules apply.

Re-evaluation/Reassessment

Re-evaluation is considered medically necessary when ALL conditions are met:

Re-evaluation Criteria: Re‑evaluation is not a recurring routine assessment; documentation includes evaluation of progress toward goals, professional judgment about continued care or revision/termination, and the indication documented is an exacerbation or significant change in patient status; re‑evaluation includes components of the initial evaluation with objective measurements.

Re‑evaluation is indicated with an exacerbation or significant change in status.

Intensive Model of Therapy (IMOT)

IMOT coverage stance:

IMOT: Insufficient evidence to conclude IMOT demonstrates improved long‑term or short‑term outcomes over less intensive care.

Typical IMOT intensity described (e.g., 5 days/week, 4 hours/day); therapeutic suits lack sufficient evidence.

Constraint-Induced Movement Therapy (CIMT)

Constraint-Induced Movement Therapy (CIMT) coverage stance:

CIMT Evidence Summary: Evidence is inconsistent; some guidelines recommend CIMT for a select group of patients with specific motor criteria, modified CIMT may show modest benefit in some populations (including children with cerebral palsy), but overall evidence is limited and further high‑quality randomized trials are needed; modified and intensive formats have differing evidence bases.

Modified CIMT may be considered in select patients but is treated as experimental/investigational for many indications in this policy.

Experimental, Investigational, or Unproven Physical Therapy Treatments

The following therapies are considered experimental, investigational, or unproven due to insufficient or inconsistent peer-reviewed evidence:

Listed experimental/investigational therapies: Constraint‑Induced Movement Therapy (CIMT) for many indications (modified formats have limited/modest evidence), Intensive Model of Therapy (IMOT), dry hydrotherapy/aquamassage/hydromassage, non‑contact 'MIST' ultrasound (evidence mixed/underpowered), Non‑invasive Interactive Neurostimulation (InterX), Microcurrent Electrical Nerve Stimulation (MENS), H‑WAVE®, spinal manipulation for non‑musculoskeletal conditions, equestrian/hippotherapy, MEDEK Therapy, The Interactive Metronome Program, elastic/rigid therapeutic taping as a stand‑alone billable procedure, dry needling (evidence limited for functional outcomes), vertebral axial decompression devices/therapy, and related listed modalities.

These modalities are labeled experimental/investigational/unproven in the source due to insufficient, low‑quality, or inconsistent evidence.

Conditional/Adjunctive Use — Non-contact ultrasound

Exceptions or conditional adjunctive use noted in the literature:

Adjunctive ultrasound evidence: Non‑contact low‑frequency ultrasound (NLFU/MIST) has RCTs and a meta‑analysis showing wound‑size reduction as an adjunct to standard care for certain chronic wounds (e.g., venous leg ulcers, diabetic foot ulcers) not responding to standard care alone; however, studies are underpowered and heterogeneous, so use should be adjunctive and cautious.

Recommendation based on multiple RCTs and a 2023 meta‑analysis but with caution due to study limitations.

Therapeutic taping — coverage and billing

Billing and scope limitations for therapeutic taping:

Taping coverage stance: Elastic or rigid therapeutic taping is of unproven effectiveness for many indications; taping may be used as part of a broader therapy program but is not intended as sole treatment or separately billable; strapping codes are not allowed for therapeutic taping application.

Taping must be included within the comprehensive therapy episode and cannot be billed separately.

Covered when criteria met

Considered Medically Necessary when criteria in the applicable policy statements listed above are met:

General coverage condition: The listed therapy CPT/HCPCS and orthotic HCPCS codes are considered medically necessary only when the specific medical necessity criteria in the applicable policy statements are satisfied.

See the related policy sections for condition‑specific criteria and documentation requirements.

Not medically necessary / Experimental

Not medically necessary: Codes and services listed under 'Considered Not Medically Necessary' and 'Educational or Training in Nature/Not Medically Necessary' (e.g., vasopneumatic devices, infrared, athletic training evaluation codes, work hardening, back school, services for maintenance rather than restoration) are not covered under this policy.

These services are excluded due to lack of medical necessity or because they are educational/maintenance in nature.

Experimental/Investigational/Unproven: Codes and services listed under 'Considered Experimental, Investigational, Unproven' (e.g., needle insertion codes for dry needling, low‑frequency non‑contact ultrasound code 97610, equestrian/hippotherapy S8940, vertebral axial decompression S9090) are considered experimental/unproven and not covered.

Unlisted codes used to report these experimental treatments (e.g., 97039, 97799) are also considered experimental when used for those services.

Treatment visits that include more than 4 timed unit services per date of service per provider (equivalent to approximately one hour) are not covered or reimbursable. Claims submitted with timed services exceeding this daily limit may be denied unless clear, contemporaneous documentation justifies medical necessity for time beyond the threshold and aligns with plan-specific benefit language and applicable CMS guidance.

Massage therapy provided in the absence of covered physical therapy, occupational therapy, or chiropractic modalities is considered not medically necessary. When massage is part of an active, skilled therapy plan addressing impairments and distinct from relaxation-only services, coverage depends on documentation establishing it as a skilled, therapeutic intervention rather than a standalone modality for comfort.

Use of vasopneumatic devices (e.g., coded as CPT 97016) is considered not medically necessary for lymphedema or other conditions given current evidence. The policy indicates complex decongestive lymphedema therapy (skin/nail care, manual lymphatic drainage, compression bandaging, therapeutic exercise) as the appropriate standard of care.

Performing or billing duplicative services during the same treatment session is inappropriate and may lead to denial. Examples explicitly listed include billing both functional activities and ADL training for the same work, providing more than one deep heating modality in a single session, combining massage therapy and myofascial release as separate billed services, concurrent orthotics training and prosthetic training, and billing for both whirlpool and Hubbard tank during the same visit. Only one heat modality is generally acceptable per session, except when one superficial and one deep modality are used together.

Exercises that are performed by the member without a physician or therapist present and providing supervision are not covered. Therapeutic exercise coverage requires instruction, feedback, and clinician supervision as part of an active, skilled treatment program.

Certain named exercise programs and therapies are not supported for specific clinical objectives and therefore are not considered covered when billed as discrete services. For example, scoliosis-specific exercise programs (e.g., the Schroth Method) are noted as lacking sufficient evidence to correct or prevent progression of scoliosis and are listed among services not supported for that purpose.

Application of therapeutic taping (elastic or rigid) must be considered part of a broader documented therapy program (exercise, manual therapy, neuromuscular re-education) and is not intended to be billed separately. The policy explicitly states that strapping codes are not allowed to report therapeutic taping.

Vertebral axial decompression devices and services (e.g., S9090) are listed as experimental, investigational, or unproven and are excluded from coverage. The policy further notes that unlisted modality or rehabilitation procedure codes (e.g., 97039, 97799) used to report other experimental treatments are treated as experimental/unproven and are not covered.

The policy references CMS National Coverage Determination 160.16 addressing vertebral axial decompression (VAX-D) as part of the evidence and coverage considerations for spinal decompression devices; providers should consult the cited CMS NCD for specific federal coverage guidance relevant to VAX‑D and related therapies.

Habilitative physical therapy is considered not medically necessary when the policy criteria for habilitation are not met or when the condition is strictly behavioral without motor involvement that impacts function (for example, ADHD or anxiety without motor deficits). Habilitative services must document the expectation of maintaining or developing functional motor skills and meet the policy’s written treatment‑plan documentation requirements to be eligible for coverage.

Reiterating the policy stance, the use of vasopneumatic devices for lymphedema is considered not medically necessary given current evidence; complete decongestive therapy remains the standard of care for lymphedema management.

The policy indicates that microwave diathermy presents an unfavorable benefit‑to‑risk profile and is not recommended. Diathermy in general is described as a deep‑heating modality, but microwave diathermy specifically is discouraged due to safety/benefit concerns.

Constraint‑Induced Movement Therapy (CIMT), including intensive formats, is classified as experimental, investigational, or unproven for many indications. The literature shows inconsistent results in adults post‑stroke and modest evidence for modified CIMT in some pediatric cerebral palsy populations, but overall higher‑quality, adequately powered RCTs and longer‑term data are needed before broad coverage can be recommended.

The policy identifies a range of therapies considered experimental, investigational, or unproven due to insufficient or inconsistent peer‑reviewed evidence. Examples include dry hydrotherapy (aquamassage), non‑contact low‑frequency ultrasound for some indications, non‑invasive neurostimulation devices, microcurrent electrical nerve stimulation (MENS), H‑WAVE®, equestrian/hippotherapy, MEDEK Therapy, Interactive Metronome, therapeutic taping when billed as a standalone procedure, dry needling pending stronger evidence of functional benefit, and vertebral axial decompression devices. Claims for these services may be denied on that basis.

Services and codes explicitly listed under the policy sections 'Considered Not Medically Necessary' and 'Educational or Training in Nature/Not Medically Necessary' are not covered. Examples include CPT 97016 (vasopneumatic devices), infrared modalities listed as not medically necessary, athletic training evaluation/re‑evaluation codes, work hardening/conditioning codes, maintenance therapy codes (e.g., S8990), and codes listed as experimental/unproven (e.g., 20560/20561 for needle insertion when used to report dry needling in contexts deemed experimental; 97610 for non‑contact ultrasound when considered experimental).

Coding Information

Hand orthotic HCPCS codesHCPCSCovered

L3807	Wrist hand finger orthosis without joint(s), prefabricated trimmed/customized
L3915	Wrist hand orthosis, includes non-torsion joint(s), prefabricated trimmed/customized
L3917	Hand orthosis, metacarpal fracture orthosis, prefabricated trimmed/customized
L3923	Hand-finger orthosis, without joints, prefabricated trimmed/customized
L3929	Hand finger orthosis, includes non-torsion joint(s), prefabricated trimmed/customized
L3931	Wrist-hand-finger orthosis, includes non-torsion joints, prefabricated
L3763	Elbow wrist hand orthosis, rigid, custom fabricated
L3764	Elbow wrist hand orthosis, includes non-torsion joints, custom fabricated
L3765	Elbow wrist hand finger orthosis, rigid, custom fabricated
L3766	Elbow wrist hand finger orthosis, includes non-torsion joints, custom fabricated

1–10 of 24

1/3

Timed services/day limit (guidance)neutral

No codes listed

Referenced PT Evaluation CPT CodesCPT

97161	Physical Therapy evaluation - low complexity
97162	Physical Therapy evaluation - moderate complexity
97163	Physical Therapy evaluation - high complexity

Referenced Testing/Performance CPT CodesCPT

95851	Appropriate range of motion (ROM) testing
95852	Appropriate range of motion (ROM) testing
97750	Physical performance test or measurement (e.g., musculoskeletal, functional capacity), with written report, each 15 minutes

Taping billing notemixed

No codes listed

Covered CPT/HCPCS Codes (when criteria met)mixedCovered

94667	Manipulation chest wall, initial demonstration and/or evaluation
94668	Manipulation chest wall, subsequent
97010	Application of a modality; hot or cold packs
97012	Application of a modality; traction, mechanical
97014	Application of a modality; electrical stimulation (unattended)
97018	Application of a modality; paraffin bath
97022	Application of a modality; whirlpool
97024	Application of a modality; diathermy (eg, microwave)
97028	Application of a modality; ultraviolet
97032	Electrical stimulation (manual), each 15 minutes

1–10 of 36

1/4

Considered Not Medically NecessaryCPTNot Covered

97016	Vasopneumatic devices
97026	Infrared

Educational or Training in Nature / Not Medically NecessarymixedNot Covered

97169	Athletic training evaluation, low complexity
97170	Athletic training evaluation, moderate complexity
97171	Athletic training evaluation, high complexity
97172	Re-evaluation of athletic training established plan of care
97537	Community/work reintegration training
97545	Work hardening/conditioning; initial 2 hours
97546	Work hardening/conditioning; each additional hour
S8990	Physical or manipulative therapy performed for maintenance rather than restoration
S9117	Back school, per visit

Experimental, Investigational, UnprovenmixedExperimental

20560	Needle insertion(s) without injection(s); 1 or 2 muscles
20561	Needle insertion(s) without injection(s); 3 or more muscles
97610	Low frequency, non-contact, non-thermal ultrasound
S8940	Equestrian/hippotherapy, per session
S9090	Vertebral axial decompression, per session

Unlisted codes when used to report other experimental treatmentsCPTExperimental

97039	Unlisted modality (specify type and time if constant attendance)
97799	Unlisted physical medicine/rehabilitation service or procedure

Orthotic HCPCS codes considered medically necessary (when criteria met)HCPCSCovered

L3763	Elbow wrist hand orthosis, rigid, custom fabricated
L3764	Elbow wrist hand orthosis, includes one or more non-torsion joints, custom fabricated
L3765	Elbow wrist hand finger orthosis, rigid, custom fabricated
L3766	Elbow wrist hand finger orthosis, includes one or more non-torsion joint(s), custom fabricated
L3806	Wrist hand finger orthosis, includes one or more non-torsion joint(s), custom fabricated
L3807	Wrist hand finger orthosis without joint(s), prefabricated trimmed/customized
L3808	Wrist hand finger orthosis rigid without joints, custom fabricated
L3891	Addition to upper extremity joint, concentric adjustable torsion mechanism, custom fabricated, each
L3900	Wrist hand finger orthosis, dynamic flexor hinge, custom fabricated
L3901	Wrist hand finger orthosis, dynamic flexor hinge, cable driven, custom fabricated

1–10 of 24

1/3

Maximum timed treatment units per date of service — 4 timed codes (equivalent to one hour)

Maximum timed treatment units per date of serviceOutpatient PT treatment visit limited to a maximum of 4 timed codes (equivalent to one hour) per date of service.

Equivalent duration4 timed codes are equivalent to approximately 60 minutes of timed intervention per date of service.

CMS alignmentLimit is consistent with CMS Local Coverage Determinations cited in the policy.

Timed code/day threshold — maximum of 4 timed codes (equivalent to one hour)

Provider Actions, Documentation & Billing Rules

Billing Rule

Visit timed‑unit limit

Outpatient physical therapy visits are limited to a maximum of four timed codes (equivalent to one hour) per date of service per provider. Services billed beyond four timed units on the same date of service are not reimbursable and may be denied.

Max 4 timed codes (≈60 minutes) per date of service

Documentation Required

Prosthetic training requirement

Prosthetic training and re‑education are considered medically necessary for members who have a medically necessary prosthetic device. Periodic return visits beyond the initial months may be required and should be supported by the plan of care and clinical need.

Prosthetic training is medically necessary when a prosthetic is medically necessary

Background

Physical therapy services address impairments, functional limitations, and disabilities resulting from injury, disease, or other causes. Rehabilitative PT focuses on restoring or improving function within a reasonable timeframe, while habilitative PT aims to help an individual keep, learn or improve skills needed for activities of daily living. Coverage requires that services be part of an active, individualized plan of care, provided by qualified clinicians, and supported by objective documentation of need and progress toward measurable goals.

Definitions

Habilitative services — definition

DefinitionHabilitative services are health care services that help a person keep, learn, or improve skills and functioning for daily living; intended to develop or improve skills needed for ADLs or IADLs that have not developed or are at risk of being lost.

Typical use caseExamples include therapy for a child who is not walking at the expected age.

Distinction from rehabilitative servicesHabilitative services focus on acquiring or maintaining skills that have not developed or are at risk, rather than restoring previously attained function.

Skilled physical therapy services — definition

DefinitionSkilled physical therapy services are services that require the judgment, knowledge and skills of a physical therapist to perform or supervise; services that can be self-administered or safely furnished by an unskilled person are not considered skilled.

Revision History & References

2025-09-15policy_effective

Policy effective date established for Cigna Medical Coverage Policy — Therapy Services (Physical Therapy).

2025-12-15policy_reviewLatest

Last review date recorded for the policy (next review aligned with same date).

The policy includes an extensive references section citing peer‑reviewed studies, systematic reviews, professional society guidance, and federal guidance. Notable items referenced include multiple randomized trials and meta‑analyses related to modalities and specialized therapies, APTA guidance, and CMS publications (including Pub. 100‑02 Chapter 15). These citations underpin the policy’s determinations regarding experimental therapies, modality recommendations, and documentation and coverage expectations.

Policy Summary

PayerCigna

PolicyTherapy Services — Physical Therapy (Coverage Criteria)

Policy CodePolicy N/A

Change TypeNo material clinical or coverage changes

Effective DateSep 15, 2025

Next Review DateDec 15, 2025

SourceLink

On This Page

Modalities progression: Passive modalities are most effective in acute/subacute phases and should show some improvement within three visits; utilization of more than two passive modalities per visit is typically considered excessive; transition to active therapeutic procedures and home exercise program should occur in a timely manner.<=2 passive modalities/visit

Need for passive modalities beyond two weeks should be objectively documented.

Massage Therapy: May be medically necessary when designed to restore muscle function, reduce edema, improve joint motion, or relieve muscle spasm and when not duplicative of other modalities/procedures.

Soft Tissue Mobilization: Considered medically necessary for treatment of restricted soft tissue motion (e.g., myofascial release, friction massage, trigger point techniques) applied by a skilled clinician.

Therapeutic Activities: Appropriate to improve functional performance using functional activities directed at specific needs; must be part of an active treatment plan and aimed at a specific outcome.

ADL Training: Medically necessary to enable performance of essential activities of daily living with minimal or no assistance; concurrent PT and OT may be covered if separate, distinct goals exist.

Cognitive Skills Development: Medically necessary for acquired cognitive deficits from head trauma, acute neurologic events (e.g., CVA), or pediatric developmental conditions when there is potential for improvement.

Orthotic/Prosthetic Training: Orthotic and prosthetic training are medically necessary when part of an active treatment plan; prosthetic training is required for persons with a medically necessary prosthetic and periodic visits beyond three months may be necessary.

Ultrasound: Provides deep heating via high‑frequency sound waves; used for soft tissue conditions requiring deep heating or micromassage to relieve pain and promote healing.

Diathermy: Utilizes high frequency magnetic/electrical current to provide deep heating for larger joints and soft tissues; microwave diathermy is not recommended due to unfavorable benefit:risk.

Active Wound Care Management: Active wound care procedures (e.g., debridement, whirlpool, negative pressure wound therapy) require direct one‑on‑one contact and are performed to remove devitalized tissue and promote healing.

Low‑Frequency Non‑Contact Ultrasound (MIST): Delivers continuous low‑frequency ultrasound and mist to wound beds and is described as a wound modality (MIST Therapy); its use and evidence are discussed in the policy.

Timed code/day thresholdA physical therapy treatment session in the outpatient setting is allowed up to a maximum of 4 timed codes (≈60 minutes) per day.

RationalePT services in excess of 60 minutes per day are generally not demonstrated to provide additional medical benefit in an outpatient setting.

Plan of care requirementDaily session length must be supported in the plan of care and based on the patient’s medical condition.

Re-evaluation indication — criteria triggering re-evaluation and components

Trigger for re-evaluationRe-evaluation is indicated when there is an exacerbation or significant change in the patient’s status or condition.

Required componentsDocumentation must include evaluation of progress toward current goals, professional judgment about continued care, and whether goals/treatment should be revised or services terminated.

Assessment elementsRe-evaluation includes components of the initial evaluation: objective measurements using appropriate tests/tools, prioritization of problems, identification of new interventions, and plan-of-care modifications.

Periodic return visits beyond the third month may be necessary

Documentation Required

Evaluation and plan of care requirements

Therapy services must be based on a documented initial evaluation and an active plan of care before ongoing skilled services are furnished. The plan of care must include diagnosis and onset/exacerbation date, measurable short‑ and long‑term goals, frequency and duration, specific treatment techniques, prognosis, and the signature of the physical therapist. Re‑evaluation is required when there is lack of progress or per clinical standards.

Initial evaluation codes (CPT 97161‑97163) selected by complexity
Plan of care must state goals, frequency/duration, techniques, prognosis, PT signature
Re‑evaluation (CPT 97164) and documentation required when progress is insufficient

Billing Rule

Billing limitation for taping

Therapeutic taping (elastic or rigid) is considered part of a broader documented treatment program (exercise, manual therapy, neuromuscular re‑education) and is not separately billable. Strapping/taping code billing is not allowed when therapeutic taping is applied.

Taping is inclusive in other billed procedures — do not bill strapping codes separately
Document taping as part of the comprehensive treatment program

Denial Risk

Medical necessity required for listed therapy codes

Coverage for listed therapy CPT/HCPCS codes is contingent on meeting applicable medical necessity criteria and supporting documentation in the medical record. Services lacking clinical justification may be denied.

Therapy codes (e.g., 97110, 97112, 97116, 97140, 97150, 97161‑97164, 97530, 97761, 97763) require medical necessity documentation
Orthotic/prosthetic management and training codes require documentation of need

Denial Risk

Documentation and coding‑triggered denials

Claims may be denied or partially denied if clinical documentation is missing, insufficient, duplicated, or lacks covered diagnosis or required procedure codes. Contemporaneous, individualized, and complete records are required; checkbox‑only or cloned notes can trigger adverse determinations.

Claims missing covered diagnosis or applicable procedure codes may be denied
Duplicated (cloned) records, checkbox‑only documentation, or missing modality parameters/time/provider may trigger denials

Billing Rule

Billing for duplicative services / Duplicative services

Certain services and modalities are considered duplicative and should not be performed or billed during the same session. Examples include more than one deep heating modality, massage therapy and myofascial release billed together, orthotics training and prosthetic training together, and multiple passive modalities beyond two per visit unless justified.

Only one heat modality is medically necessary per session (exception: one superficial + one deep)
Use of more than two passive modalities per visit is typically excessive and must be justified
Do not bill multiple deep or multiple superficial heat modalities on same visit

Denial Risk

CMS‑based denial risk

Failure to meet Centers for Medicare & Medicaid Services (CMS) guidance for outpatient rehabilitation therapy services (e.g., LCDs and Pub. 100‑02, Chapter 15) may lead to coverage denials. Providers should align documentation and coverage decisions with CMS guidance where applicable.

Refer to CMS Pub. 100‑02, Chapter 15, Sections 220 and 230 and relevant LCDs (e.g., L33631) for outpatient therapy coverage guidance

Note

References and authorization/denial notes

This section includes references that support the policy statements and clinical guidance but does not itself create additional authorization requirements. No separate prior authorization or denial triggers are specified in these reference or copyright sections of the policy.

References support assertions; they do not specify documentation or authorization requirements in this section
No explicit prior authorization criteria are listed in the references or copyright sections

Documentation Required

Required clinical documentation

Required clinical documentation must include a written treatment plan with measurable goals, frequency and duration, objective outcome measures, and regular progress reports. Treatment notes must document date, total treatment time, interventions performed, modality parameters (when applicable), response to treatment, and the provider's signature and credentials.

Treatment plan: measurable short‑ and long‑term goals, frequency/duration, expected timeframe for goal attainment
Daily documentation: date, total treatment time, specific interventions, parameters for modalities, treating clinician and credentials
Progress reports and discharge summaries with objective measures and authentication are required

Documentation Required

Providers must maintain contemporaneous documentation

Providers must maintain contemporaneous, individualized, comprehensive documentation in chronological order. Entries must avoid cloning or duplication and must include objective findings, progress toward goals, and modality parameters and times. Inadequate record keeping may lead to adverse determinations.

Contemporaneous, individualized notes required; duplicated/nearly duplicated records are unacceptable
Document objective findings and measurable progress toward goals; include modality parameters and time for timed services

Documentation Required

Medical necessity for orthotic devices and sequencing

Medical necessity for orthotic devices must be documented, including a prescription for the specific device, a recent (<6 months) physical exam supporting the need, assessment of functional limitations, and why an off‑the‑shelf device is insufficient. Prefabricated (off‑the‑shelf) orthoses are generally tried before custom‑fitted or custom‑fabricated devices unless clinically contraindicated.

Supportive documentation: prescription, recent exam (<6 months), functional assessment, comorbidities
Prefabricated device should be attempted and documented before custom‑fabricated device unless criteria for custom device are met
Custom‑fitted/fabricated orthoses require documentation that off‑the‑shelf is insufficient

Billing Rule

Taping documentation and billing

Therapeutic taping must be documented as part of a broader treatment program and not billed separately. Documentation should show taping was adjunctive to other therapies and included within billed procedures.

Do not submit strapping codes for therapeutic taping
Document taping within the comprehensive treatment plan (exercise, manual therapy, NMR)

Documentation Required

Provider qualification documentation

Therapy services must be provided by appropriately qualified clinicians. Physical therapists and physical therapist assistants under appropriate supervision must hold applicable licensure and qualifications (e.g., PT programs accredited by CAPTE, NPTE). EMG/NCV testing and other specialized services must be performed by qualified personnel.

PTs must be licensed (NPTE, CAPTE‑accredited education)
PTAs may provide services under PT supervision per state rules
EMG/NCV only covered when performed by qualified professionals and reports produced on site

Note

CMS documentation reference

CMS publications and LCDs are referenced for outpatient rehabilitation therapy coverage guidance; providers should consult these sources to align documentation and coverage decisions with federal guidance.

CMS Pub. 100‑02, Chapter 15, Sections 220 and 230 referenced for therapy coverage guidance
Relevant LCDs (e.g., L33631) may inform local coverage expectations

Note

Purpose of references

References cited throughout the policy are provided to support policy assertions, clinical statements, and evidence summaries. These references do not by themselves add documentation requirements beyond those in the policy text.

Reference list supports the policy; it does not independently specify new documentation requirements

Documentation Required

Evaluation and reassessment timeline

If no measurable improvement is documented after approximately two weeks of treatment, consider an alternative plan; if there is no significant improvement after four weeks, a re‑evaluation by the referring provider or PT is indicated. Treatment is not medically necessary when the patient stops progressing toward established goals.

Attempt alternative plan after ~2 weeks with no improvement
Re‑evaluate after ~4 weeks if no significant improvement

Documentation Required

Passive modalities transition

Passive modalities (e.g., heat, cold, ultrasound) should transition to active treatment procedures in a timely manner. Passive modalities that do not contribute to improvement should be discontinued. Use of more than two passive modalities per visit is typically excessive and must be justified in documentation.

Passive modalities most effective in acute phase; discontinue if not contributing to improvement
Limit to two passive modalities per visit unless documented justification provided

Documentation Required

Prefabricated vs custom orthosis sequencing

A prefabricated (off‑the‑shelf) orthosis is generally used before attempting a custom‑fitted orthosis; custom‑fitted or custom‑fabricated orthoses are considered medically necessary only when documented criteria are met showing the patient cannot be adequately treated with a prefabricated device.

Prefabricated orthosis may be modified and become custom‑fitted if adapted for the patient
Custom‑fabricated devices require substantial labor and documentation of need

Note

Ultrasound adjunctive use

Non‑contact low‑frequency ultrasound (mist/airborne ultrasound) is described in the evidence section as an adjunct for certain chronic wounds (e.g., venous leg ulcers) with some supporting RCT data; its use should be considered adjunctive to guideline‑based standard care and documented accordingly when billed.

NLFU may be considered as adjunct to standard care for selected chronic wounds not responding to standard care
Document wound care standard treatments (compression, debridement) when using adjunctive ultrasound

Implication for coverageIf a service can be safely and effectively provided via a home exercise program or caregiver-assisted program, it is not considered a skilled therapy service.

Provider roleDelivered by a physical therapist or other health professional acting within their professional license and scope.

Habilitative services (duplicate inventory entry) — definition

DefinitionHabilitative services: health care services that help a person keep, learn or improve skills and functioning for daily living; intended to keep, develop or improve skills needed to perform ADLs or IADLs which have not developed or are at risk of being lost.

ExampleTherapy for developmental delays (e.g., a child not walking at expected age).

SourceDefinition per NAIC as cited in the policy.

Modality (per AMA CPT) — definition

AMA CPT definitionA modality is any physical agent applied to produce therapeutic changes to biologic tissue (includes thermal, acoustic, light, mechanical, or electric energy).

Supervision categoriesModalities may be supervised (no constant attendance) or may require constant attendance (one-on-one contact).

ExamplesExamples include hot/cold packs, whirlpool, ultrasound, attended electrical stimulation, iontophoresis.

Low-Frequency, Non-Contact, Non-Thermal Ultrasound (MIST Therapy) — definition

DescriptionLow-frequency, non-contact, non-thermal ultrasound (often called MIST Therapy) uses continuous low-frequency ultrasonic energy to produce and propel a mist of liquid and deliver continuous low-frequency ultrasound to the wound bed.

Primary applicationDescribed as a wound care modality for promoting wound-size reduction when used adjunctively with standard care in some studies.

Common nameOften referred to in the policy as 'MIST Therapy' or non-contact 'mist' ultrasound.

Orthoses categories — prefabricated, custom-fitted, custom-fabricated

CategoriesOrthoses are categorized as prefabricated, custom-fitted (prefabricated device modified for a specific patient), or custom-fabricated (constructed from basic materials specifically for the patient, often requiring molding from a patient-specific model).

PrefabricatedManufactured in quantity; may be modified (trimmed, bent, molded) and then considered custom-fitted.

Custom-fitted vs custom-fabricatedA custom-fitted orthosis is a modified prefabricated device; a custom-fabricated orthosis is individually constructed and requires substantial labor/materials and often a molded patient model.

Active wound care — definition

DefinitionActive wound care procedures are performed to remove devitalized and/or necrotic tissue and promote healing and require direct one-on-one contact with the patient.

ExamplesIncludes debridement of an open wound, use of whirlpool or other modalities, and negative pressure wound therapy.

CPT referenceDefined per AMA CPT manual as cited in the policy.

EMG/NCV — definition

EMG/NCV descriptionNeedle EMG includes interpretation of electrical waveforms recorded from muscles; NCV requires recordings from motor and sensory points with waveforms reviewed on site in real-time.

Reporting requirementsWaveforms must be reviewed on site in real-time and reports prepared on site by the examiner as their work product.

Qualified providerEMG/NCV testing is covered only if provided by a qualified health care professional or physician; physical therapists board-certified by APTA are considered qualified where applicable.

Constraint-Induced Movement Therapy (CIMT) — definition

DefinitionConstraint-Induced Movement Therapy (CIMT) is a therapy to improve use of an affected limb by constraining the unaffected limb and providing intensive task practice.

Evidence noteResearch is not conclusive for many populations; modest evidence supports modified CIMT in some children with cerebral palsy, but higher-quality, adequately powered RCTs are needed.

Policy stanceConsidered experimental/investigational/unproven for many indications in this policy segment due to inconsistent evidence.

Dry hydrotherapy — definition

DefinitionDry hydrotherapy (aquamassage/hydromassage) is a water-based massage-like treatment delivered using devices (e.g., Aqua Massage®, Hydrotherapy Tables) in a dry setting.

Evidence noteThe policy states no published peer-reviewed studies were identified and no definitive conclusions can be drawn regarding clinical benefits.

Typical settingGenerally provided in chiropractor or physical therapy offices via commercial dry hydrotherapy devices.

Non-contact low-frequency ultrasound (NCLFU/MIST) — definition

DefinitionNon-contact low-frequency ultrasound (NCLFU/MIST) is airborne or mist ultrasound therapy applied without direct contact to the wound bed, delivering low-frequency ultrasonic energy with a mist.

Evidence summarySome randomized trials and a meta-analysis showed wound-size reduction as an adjunct to standard care for certain ulcers, but studies are underpowered and heterogeneous.

Clinical roleMay be considered adjunctive to guideline-defined standard care for venous leg ulcers or diabetic foot ulcers not responding to standard care alone (with caution).

Vertebral axial decompression therapy — definition

DefinitionVertebral axial decompression therapy is mechanized spinal distraction therapy delivered by clinic-based devices (examples: VAX-D, DRS system, DRX2000) proposed to treat back pain.

Evidence notePublished scientific data is insufficient to validate improved clinical outcomes; effectiveness has not been proven compared to standard equipment or testing.

Coverage implicationPolicy identifies these devices/therapy as experimental/unproven and subject to exclusion or denial.

Qualified physical therapist — definition

DefinitionQualified physical therapist: a licensed provider who has passed the NPTE and graduated from a CAPTE-accredited or substantially equivalent physical therapy education program.

PTA rolePhysical therapist assistants working under the supervision and direction of a PT are also considered qualified providers of PT services.

Licensure basisQualification for licensure includes NPTE passage and graduation from an accredited education program; state licensure rules apply.

Constraint-induced movement therapy — definition and evidence note

DefinitionConstraint-induced movement therapy is a motor-retraining intervention frequently studied in stroke and cerebral palsy to improve upper-extremity function by constraining the unaffected limb and providing intensive practice.

Evidence summaryMultiple randomized trials and systematic reviews are cited; evidence shows modest benefit in some populations but overall is inconsistent and higher-quality RCTs are needed.

Policy positionModified CIMT may show modest benefit in certain pediatric CP populations, but CIMT is considered experimental/investigational/unproven for many indications in this policy.

Dry needling — definition and referenced evidence

DefinitionDry needling is a needling therapy targeting myofascial trigger points using needle insertion(s) without injection(s).

Evidence summaryMultiple systematic reviews and randomized trials are cited in the references; evidence suggests potential benefit for some musculoskeletal conditions but the policy notes evidence is limited and outcomes vary.

Policy stanceDry needling is listed among therapies with limited or inconsistent evidence and is classified as experimental/investigational/unproven in this policy segment.