ModifiedUnitedHealthcarePolicy CS195NE.J

Treatment of Temporomandibular Joint Disorders (for Nebraska Only)

This Nebraska-only UnitedHealthcare medical policy defines medical necessity, coverage stance, and applicable codes for nonsurgical and surgical treatments of temporomandibular joint disorders and documents required for review; it applies to providers and members in Nebraska.

Policy Summary

PayerUnitedHealthcare

PolicyTreatment of Temporomandibular Joint Disorders (for Nebraska Only)

Policy CodePolicy CS195NE.J

Change TypeRevisions to unproven services listcode removalsdocumentation clarifications

Effective DateJun 1, 2026

Next Review DateN/A

Key ActionProvide legible medical record documentation (history, exam, diagnostic results) to support medical necessity and make records available upon request.

SourceLink

POLICY UPDATE CHANGES

Revised list of unproven and not medically necessary services; removed 'craniosacral manipulation/therapy'.

Added language clarifying that benefit coverage is determined by federal, state, or contractual requirements and that medical records documentation may be required but does not guarantee coverage.

Removed CPT codes 21089 and 21499 from the list of applicable codes.

5nonsurgical services listed as proven and medically necessary

3+InterQual surgical criteria referenced

36studies cited (example, network meta-analyses)

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20552–29804, E1399–E1702example CPT/HCPCS codes listed

Coverage Criteria

Proven nonsurgical TMJ treatments

Covered when ALL of the following are met for nonsurgical services:

Nonsurgical proven services: Arthrocentesis, intra-articular corticosteroid injections, trigger point injections, physical therapy, and occlusal splints (stabilization and repositioning splints) are proven and medically necessary for treating temporomandibular joint (TMJ) disorders.

Listed as proven and medically necessary in Coverage Rationale.

Surgical TMJ procedures with conditional coverage

Surgical services:

Surgical procedures subject to InterQual criteria: Certain TMJ surgical services (arthroscopy, discectomy, reconstruction, arthroplasty) are medically necessary in specified circumstances when the provider meets the applicable InterQual clinical coverage criteria.meet InterQual CPs

Policy references InterQual CPs for arthroscopy, discectomy, reconstruction, and a client-defined arthroplasty criteria.

Unproven and not medically necessary services

Not medically necessary/unproven services:

Unproven devices and multiple splints: Jaw mobility mechanical stretching devices (e.g., TheraBite Jaw Motion Rehabilitation System, Jaw Dynasplint System), multiple occlusal splints (daytime and nighttime or maxillary and mandibular splints), and epigenetic appliances (e.g., Homeoblock, DNA, Advanced Lightwire Functional appliance) are considered unproven and not medically necessary due to insufficient evidence of efficacy.

Examples listed in Coverage Rationale; literature reviews found insufficient quality evidence and inconclusive outcomes.

Staged care pathway

Covered when ALL of the following are met

Conservative management first: Patient has documented trial of conservative, reversible, evidence-based therapies (for example: occlusal splint therapy, physical therapy, education/counseling) unless contraindicated.documented trial of conservative therapy

Supported by AADOCR guidance and AAOMS position statements; conservative-first approach recommended.

Minimally invasive options after conservative failure: Minimally invasive procedures (arthrocentesis with lavage, intra-articular injections such as corticosteroids or hyaluronic acid, trigger point injections, needling therapies) may be considered when conservative therapy fails; evidence shows short- to intermediate-term benefits for pain and maximum mouth opening in arthrogenous and myogenous TMD.failure of conservative therapy

Systematic reviews and RCTs report low- to moderate-quality evidence for short/intermediate benefit.

Surgical escalation after minimally invasive failure:

The policy lists several therapies as unproven and not medically necessary for treating temporomandibular joint disorders. Specifically, jaw mobility mechanical stretching devices (for example, the TheraBite Jaw Motion Rehabilitation System® and the Jaw Dynasplint® System), multiple occlusal splints (such as combined daytime and nighttime or both-arch appliances), and epigenetic appliances (for example, Homeoblock™, DNA® Daytime/Nighttime appliance, Advanced Lightwire Functional appliance) are identified as lacking sufficient evidence of efficacy and therefore are considered not medically necessary.

Jaw mobility mechanical stretching devices and epigenetic appliances are considered unproven because available studies are limited by small sample sizes, short follow-up, high loss to follow-up, and inconsistent or unfavorable results. Published reports note poor adherence to prescribed device regimens, which further limits the ability to demonstrate clinical benefit for TMD symptoms or function.

The policy was revised effective 06/01/2026 to update the list of services considered unproven and not medically necessary. The revision clarifies the current exclusions (including jaw mobility devices, multiple occlusal splints, and epigenetic appliances) and notes removal of craniosacral manipulation/therapy from the prior list of unproven services; see the full policy for the complete, updated list.

Examples of jaw mobility mechanical stretching devices cited in the policy include the TheraBite Jaw Motion Rehabilitation System® and the Jaw Dynasplint® System. The policy explicitly states that the use of these devices, as well as the practice of prescribing multiple occlusal splints (e.g., daytime plus nighttime appliances or both maxillary and mandibular splints), is considered unproven and not medically necessary.

Clinical studies assessing jaw mobility devices have generally enrolled small numbers of participants and reported challenges with adherence. For example, trials of the TheraBite and Jaw Dynasplint reported no significant between-group differences in mouth opening or quality-of-life measures and low rates of device use as prescribed. These methodological limitations and inconsistent results contribute to the determination that these devices and similar therapies have inconclusive outcomes.

The policy notes that the list of unproven and not medically necessary services has been revised; readers should refer to the full policy for the detailed, current list and for context on which items were removed or updated in the revision.

Applicable Codes

Applicable CPT codesCPT

20552	Injection(s); single or multiple trigger point(s), 1 or 2 muscle(s).
20553	Injection(s); single or multiple trigger point(s), 3 or more muscles.
20605	Arthrocentesis, aspiration and/or injection, intermediate joint or bursa; without ultrasound guidance.
20606	Arthrocentesis, aspiration and/or injection, intermediate joint or bursa; with ultrasound guidance, with permanent recording and reporting.
21010	Arthrotomy, temporomandibular joint.
21050	Condylectomy, temporomandibular joint (separate procedure).
21060	Meniscectomy, partial or complete, temporomandibular joint (separate procedure).
21070	Coronoidectomy (separate procedure).
21085	Impression and custom preparation; oral surgical splint.
21110	Application of interdental fixation device for conditions other than fracture or dislocation, includes removal.

1–10 of 19

1/2

Applicable HCPCS codesHCPCS

E1399	Durable medical equipment, miscellaneous.
E1700	Jaw motion rehabilitation system.
E1701	Replacement cushions for jaw motion rehabilitation system, package of 6.
E1702	Replacement measuring scales for jaw motion rehabilitation system, package of 200.

Removed CPT CodesCPTNot Covered

21089	CPT code removed from Applicable Codes list
21499	CPT code removed from Applicable Codes list

Provider Actions & Documentation

Prior Authorization

Prior Authorization May Be Required

Certain TMJ surgical services may require prior authorization. Providers should obtain authorization when InterQual or UnitedHealthcare requirements apply before scheduling procedures.

InterQual CP: Arthroscopy, Discectomy, Reconstruction; InterQual Client Defined: Arthroplasty, TMJ (Custom) - UHG

Prior Authorization

Prior Conservative Therapy Required Before Major Surgery

Document attempts at conservative therapy prior to major surgery. Arthroplasty and total joint replacement should be reserved for patients who have failed minimally invasive procedures and non‑surgical management.

Documented trial of conservative therapies (e.g., occlusal splint, physical therapy, injections, arthrocentesis) and duration/response
Specific documentation that minimally invasive procedures were attempted and unsuccessful prior to arthroplasty/total joint replacement

Background

Temporomandibular disorders (TMD/TMJ) are a heterogeneous group of conditions affecting the temporomandibular joint and the masticatory muscles. They commonly cause pain, limited range of motion (reduced maximum mouth opening), and joint noises. Management typically begins with conservative, reversible therapies (for example, activity modification, NSAIDs, heat, physical therapy, splint therapy) and escalates to injections or surgical options only when appropriate after documentation of prior conservative care.

Definitions

inv-27: Arthrocentesis — definition and purpose

DefinitionA minimally invasive joint lavage procedure in which irrigants are injected into the temporomandibular joint (TMJ) to remove inflammatory mediators and/or intra-articular adhesions to improve mobility and reduce pain.

PurposeImprove joint mobility and reduce pain by removing inflammatory mediators and breaking intra-articular adhesions through lavage.

Clinical contextUsed when conservative measures fail; discussed in systematic reviews and RCTs comparing arthrocentesis with other nonsurgical treatments for arthrogenous TMD.

inv-28: Occlusal splint — definition (stabilization or mandibular repositioning splint)

DefinitionAn intraoral occlusal device — either a stabilization splint (occlusal guard/night guard) or a mandibular repositioning splint — intended to reduce clenching/bruxism and position the jaw in a more relaxed posture.

Policy Summary

PayerUnitedHealthcare

PolicyTreatment of Temporomandibular Joint Disorders (for Nebraska Only)

Policy CodePolicy CS195NE.J

Change TypeRevisions to unproven services listcode removalsdocumentation clarifications

Effective DateJun 1, 2026

Next Review DateN/A

Key ActionProvide legible medical record documentation (history, exam, diagnostic results) to support medical necessity and make records available upon request.

SourceLink

On This Page

Arthroplasty or total joint replacement (and other major surgical procedures) are reserved for patients with moderate-to-severe pain or dysfunction who have not improved after appropriate minimally invasive procedures; thorough diagnostic workup and documentation of prior treatments are required.

failed minimally invasive treatments

Consistent with AAOMS statements to reserve major surgery for unsuccessful minimally invasive care and require standardized evaluation and documentation.

Documentation Required

Medical Record Documentation Requirements

Medical records must fully support medical necessity. Records should include relevant history, physical exam findings, diagnostic test results, imaging, treatment attempts, and progress notes. Documentation must be legible and available upon request.

History and physical exam documenting symptoms and functional impact
Copies of pertinent imaging and diagnostic test results
Records of prior treatments, dates, responses, and rationale for escalation of care

Documentation Required

Document Conservative Treatment and Diagnostic Workup

Include clear documentation of conservative treatment and diagnostic workup before submitting requests for advanced or surgical interventions.

Dates and types of conservative therapies tried (e.g., splints, PT, injections) and outcome measures
Results of diagnostic workup used to establish indication for surgery (imaging, specialist consultations)

Billing Rule

Applicable Codes Updated

Applicable billing and procedure code lists have been updated. CPT codes 21089 and 21499 were removed from the policy’s code list; inclusion of codes in the policy is for reference only and does not guarantee coverage or payment.

Removed CPT: 21089, 21499
Code lists are for reference; verify plan, state, and contractual coverage before billing

Note

Regulatory Considerations May Affect Coverage

FDA approval or device classification is informational and not by itself a basis for coverage. Safety communications and regulatory actions may influence coverage determinations.

FDA approvals (e.g., TMJ prostheses as Class III) are informational only
Safety communications (e.g., jaw remodeling device concerns) may impact coverage review

Denial Risk

Denial Triggers

Services may be denied if medical records do not fully support the requested service’s medical necessity or if required documentation is not provided upon request.

Failure to provide requested records may result in denial or inability to determine coverage
Denials may be issued when criteria (including conservative therapy attempts) are not met

Note

Use of External Clinical Criteria Tools

UnitedHealthcare may use third‑party clinical criteria tools (such as InterQual) to assist in benefit administration; clinicians should anticipate policy application referencing these tools.

InterQual criteria referenced for specific TMJ procedures
Third‑party tools inform but do not replace plan or contractual benefit rules

Note

(Inventory placeholder callout retained per policy inventory.)

Stabilization (hard or soft) splints, mandibular repositioning splints, prefabricated and custom appliances; used day- or night-time depending on clinical plan.

Intended effectReduce/eliminate parafunctional tooth contact (clenching/grinding) and improve myofascial pain and jaw function often as part of multimodal therapy.

inv-29: Myofascial trigger point injection — definition (dry/wet needling into focal muscle knots)

DefinitionInjection or needling into focal myofascial trigger points (muscle knots) in masticatory muscles; may be performed as dry needling alone or followed by injection of substances such as local anesthetic, corticosteroid, dextrose, or saline.

MechanismNeedling and/or injection relaxes contracted muscle fibers, allows lengthening, and removes metabolite waste to help break the pain–tension cycle.

Evidence summaryNetwork meta-analyses of RCTs (21 RCTs) report low to very low quality evidence for needling therapies showing short- to intermediate-term improvements in pain and maximum mouth opening depending on substance and technique.

inv-30: Arthrogenous TMD — definition and treatments studied (arthrocentesis, injections, arthroscopy)

DefinitionArthrogenous TMD refers to temporomandibular disorders originating from joint structures (eg, disc displacement, intra-articular pathology, TMJ osteoarthritis).

Treatments studiedMinimally invasive options studied include arthrocentesis (lavage), intra-articular injections (hyaluronic acid, corticosteroids, platelet-rich products), and arthroscopy; these have been compared with conservative therapies in systematic reviews and network meta-analyses.

Outcomes evidenceNetwork meta-analyses indicate very low- to moderate-quality evidence that minimally invasive procedures (including corticosteroid injections and arthrocentesis/arthroscopy) can provide short- to intermediate-term pain relief and improved maximum mouth opening compared with conservative care.

inv-31: Needling therapies — includes dry needling, acupuncture, and wet needling with substances

ScopeIncludes dry needling, acupuncture, and wet needling (injection) with various substances such as local anesthetic, botulinum toxin‑A, granisetron, platelet-rich plasma, or placebo comparators.

PurposeApplied to myofascial pain of the masticatory muscles to reduce pain intensity, increase maximum mouth opening, and increase pressure pain thresholds.

Evidence noteMeta-analyses of RCTs (eg, 21 RCTs) report low or very low quality evidence; outcomes suggest effectiveness does not depend strongly on needling type or substance, but conclusions are limited by study quality.

inv-32: Temporomandibular disorders (TMD/TMJ) — umbrella definition covering myofascial pain and internal derangement

DefinitionAn umbrella term for conditions affecting the temporomandibular joint and surrounding musculature, including myofascial (muscle) pain, internal derangement (disc displacement with or without reduction), and TMJ osteoarthritis.

Common symptomsPain at rest or with function, limited range of motion (eg, reduced maximum mouth opening), and joint noises such as clicking, popping, or crepitus.

Treatment spectrumManagement ranges from conservative, reversible therapies (eg, NSAIDs, soft diet, jaw rest, physical therapy, occlusal splints) to minimally invasive procedures (arthrocentesis, injections, needling) and, if necessary, surgical interventions.