Colorado Rocky Mountain HP TMJ Coverage Update

Coverage and Medical Necessity Criteria

Proven Nonsurgical Treatments

Covered when provided as nonsurgical treatments for TMJ disorders:

Nonsurgical proven services: Arthrocentesis; Intra-articular corticosteroid injections; Trigger point injections; Physical therapy; Occlusal splint (stabilization and repositioning splints)

These services are listed as proven and medically necessary per the policy.

Surgical Treatments (InterQual-referenced)

Surgical TMJ services may be covered when InterQual criteria are met:

Surgical procedures referenced: Arthroscopy, Discectomy, Reconstruction, and Arthroplasty of the TMJ per InterQual clinical coverage criteria

Refer to InterQual CP: Procedures and InterQual Client Defined CP for specific medical necessity criteria.

Unproven / Not Medically Necessary Services

The following are considered unproven and not medically necessary due to insufficient evidence:

Unproven services: Biofeedback; Jaw mobility mechanical stretching devices (e.g., TheraBite, Jaw Dynasplint); Multiple occlusal splints (e.g., daytime and nighttime splints, maxillary and mandibular splints); Epigenetic appliances (e.g., Homeoblock, DNA, Advanced Lightwire Functional appliance)

See policy list; sodium hyaluronate and botulinum toxin addressed in separate drug policies.

Surgical interventions

Surgical arthroplasty and reconstruction

Arthroplasty evidence summary: Functional, interpositional, and reconstruction arthroplasty can provide short-term improvements in pain, quality of life, and maximum mouth opening in selected populations (e.g., ADDwoR, TMJ ankylosis); studies are frequently single-arm or nonrandomized with heterogeneity in techniques and follow-up. Recurrence rates and outcomes vary by technique and material (GA higher recurrence than IGA/RA; alloplastic interposition higher recurrence than autogenous; autogenous grafts favored in some analyses).

Consider prior conservative/minimally invasive therapy and patient-specific factors; evidence limited by heterogeneity and lack of randomized comparisons.

Arthrocentesis and intra-articular injections

Minimally invasive injections and arthrocentesis

Injectables and arthrocentesis: Arthrocentesis with joint flushing improves maximum mouth opening and pain; intra-articular corticosteroid injections (with or without arthrocentesis) reduce pain at 6–12 months; evidence does not consistently demonstrate superiority of drug injectables over Ringer's lactate alone.

Arthrocentesis may precede injectables to remove inflammatory detritus and facilitate subsequent injections.

Trigger point and needling therapies

Trigger point injections and needling

Trigger point/needling evidence: Trigger point injections (e.g., local anesthetic) and needling approaches (dry needling, LA, PRP, BTX-A) show short-term reductions in pain and some increases in maximum mouth opening in RCTs and network meta-analyses; overall evidence quality is low and heterogeneous.

Effectiveness may not depend on needling substance or modality; conclusions limited by low-quality evidence and indirectness.

Physical therapy

Physical therapy and manual/exercise therapy

Physical therapy evidence: Physical therapy, including craniomandibular manual therapy and therapeutic exercise, improves pain and range of motion; combined PT plus occlusal splint and education shows greater benefit than splint alone in RCTs, though effects may diminish without ongoing exercise.

Consider multimodal regimens including home exercises to maintain gains.

Occlusal splints

Occlusal splint therapy

Occlusal splint evidence: Stabilization and other occlusal splints provide short-term reductions in pain and improvements in mouth opening; multimodal therapy (counseling plus hard stabilization splint) may yield greater improvement. There is no evidence supporting simultaneous use of more than one splint (e.g., AM/PM).

Long-term outcomes tend to equalize across modalities.

Biofeedback

Biofeedback and behavioral interventions

Biofeedback evidence: Evidence for biofeedback is insufficient and of low quality; studies are heterogeneous and frequently combine biofeedback with other treatments. Biofeedback may aid somatic awareness and reduce parafunctional habits when used adjunctively, but effects as an isolated therapy are unclear.

Standardized protocols and longer-term RCTs are needed to establish benefit.

Jaw mobility devices

Jaw mobility stretching devices

Stretching devices stance: Jaw mobility mechanical stretching devices (e.g., TheraBite, Jaw Dynasplint) are considered unproven due to limited, inconsistent, and low-quality evidence and adherence concerns; randomized trials show no consistent long-term advantage over standard exercises or physical therapy.

Coverage for these devices may be restricted given the unproven status and documented adherence issues.

Surgical and invasive procedure criteria

Covered when ALL of the following are met

Conservative management trial: Patient has undergone appropriate conservative, reversible, evidence-based therapies (e.g., physical therapy, splints) prior to invasive procedures

AADOCR and AAOMS recommend initial conservative therapy before invasive treatments

Indication for surgery: Surgery (arthroplasty or total joint replacement) is considered only when minimally invasive and nonsurgical procedures have been ineffective and pain and/or dysfunction are moderate to severe

AAOMS position statement — not indicated for asymptomatic or minimally symptomatic patients

Standardized assessment: Thorough history, screening, physical examination, and appropriate diagnostic imaging performed to establish diagnosis before invasive treatments

Document prior nonresponse to conservative/minimally invasive therapy, pain scores, mouth opening metrics, and rationale for surgery

Nonoperative device therapies

Consider use when ALL of the following are met

Jaw stretching devices evidence: Randomized studies show mixed results: TheraBite may provide faster early functional improvement but equivalent outcomes by 3 months compared with standard PT; Jaw Dynasplint demonstrated low adherence and uncertain benefit for trismus prevention

See Kraaijenga et al. and Zatarain et al.; adherence and adherence-related outcome data should be documented

Epigenetic appliances: No quality evidence demonstrates efficacy of epigenetic appliances for TMJ disorders; effects on health outcomes cannot be established

Considered unproven and not medically necessary in the policy

Benefit coverage for services to diagnose or treat temporomandibular joint (TMJ) disease may be governed by the member-specific benefit plan. Many benefit documents have explicit exclusions for TMJ diagnosis and treatment (medical or dental). Before requesting or billing services, verify the member's plan document and any applicable federal or state mandates to determine whether the service is excluded.

Jaw mobility mechanical stretching devices (for example, TheraBite and Jaw Dynasplint) are explicitly considered unproven due to insufficient quality evidence of efficacy and safety. The literature is limited by small samples, short follow‑up, and high loss to follow‑up, and adherence to these devices is often poor; therefore their impact on clinical outcomes cannot be established.

Epigenetic appliances lack quality evidence supporting efficacy for TMJ disorders and the effect on health outcomes cannot be established; they are therefore considered unproven/not medically necessary. As part of the current revision, craniosacral manipulation/therapy has been removed from the list of unproven therapies.

The policy lists specific modalities as unproven and not medically necessary for TMJ disorders due to insufficient evidence: biofeedback; jaw mobility mechanical stretching devices (e.g., TheraBite, Jaw Dynasplint); multiple occlusal splints used concurrently (e.g., daytime/nighttime or maxillary and mandibular splints); and epigenetic appliances (e.g., Homeoblock, DNA, Advanced Lightwire Functional appliance).

Devices with demonstrably poor adherence (for example, the Jaw Dynasplint in published trials) or those associated with inconclusive or unfavorable clinical outcomes may be deemed not medically necessary. Low adherence and lack of consistent benefit are important operational considerations when determining coverage for jaw mobility stretching devices.

Use of epigenetic appliances for TMJ disorders is considered unproven and not medically necessary because a review of the medical literature did not identify quality evidence demonstrating clinical benefit; the effect on health outcomes cannot be established.

Procedures, HCPCS, and Product Codes

Procedures and oral/maxillofacial 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 (e.g., temporomandibular, acromioclavicular, wrist, elbow or ankle, olecranon bursa); without ultrasound guidance.
20606	Arthrocentesis, aspiration and/or injection, intermediate joint or bursa (e.g., temporomandibular, acromioclavicular, wrist, elbow or ankle, olecranon 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 15

1/2

Additional CPT codesCPT

29800	Arthroscopy, temporomandibular joint, diagnostic, with or without synovial biopsy (separate procedure).
29804	Arthroscopy, temporomandibular joint, surgical.
90901	Biofeedback training by any modality.
97039	Unlisted modality (specify type and time if constant attendance).
97139	Unlisted therapeutic procedure (specify).

HCPCS/DME codesHCPCS

E0746	Electromyography (EMG), biofeedback device.
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 policy
21499	CPT code removed from policy

FDA product codes (informational)mixed

LZD	FDA product code for TMJ prostheses (informational)
MPI	FDA product code for TMJ prostheses (informational)
BXB	FDA product code for continuous passive motion machines (informational)

Provider Requirements, Prior Auth, and Billing Guidance

Prior Authorization

Prior Authorization — Plan-Determined

Prior Authorization — Plan-Determined: Prior authorization may be required for certain procedures, devices, or services described in this policy. Applicability and required documentation are determined by the member-specific benefit plan and applicable laws. Listing of codes in this policy is for reference only and does not guarantee coverage or payment. Medical records documentation may be requested to assess whether the member meets clinical criteria, but submission of documentation does not ensure coverage.

Benefit coverage governed by member-specific benefit plan documents and applicable laws
Medical records may be required to determine eligibility for coverage
Inclusion of codes does not imply coverage or guarantee reimbursement

Prior Authorization

Prior authorization for surgical and unproven devices

Prior authorization is suggested for procedures and devices that have limited, mixed, or evolving evidence (for example, certain surgical techniques, arthroplasty approaches, and unproven devices). When available, detailed operative reports, prior conservative treatment documentation, and outcomes data should be provided to support medical necessity.

Background and Scope

Temporomandibular disorders encompass a diverse set of conditions affecting the temporomandibular joint and the surrounding musculature, commonly causing facial or jaw pain, joint noises, and limited mouth opening. Many cases respond to conservative measures (for example, NSAIDs, soft diet, jaw rest, heat, physical therapy, occlusal splints, and muscle relaxants) and may improve spontaneously; refractory cases may require minimally invasive injections or surgical intervention. Arthrocentesis is a minimally invasive lavage procedure; occlusal splints are stabilization or mandibular repositioning devices; jaw mobility devices are passive rehabilitation devices used for prolonged mandibular stretching.

Key Terms and Definitions

inv-37: Arthrocentesis

DefinitionArthrocentesis (lavage): a minimally invasive procedure in which irrigants are injected into the temporomandibular joint space to remove inflammatory mediators or increase mobility by removing intra‑articular adhesions.

PurposeReduce joint inflammation and mechanically disrupt intra‑articular adhesions to improve maximum mouth opening (MMO) and reduce pain.

Common useUsed as a minimally invasive intervention after conservative therapies have failed and may precede intra‑articular injections to clear joint detritus.

inv-38: Occlusal splint

DefinitionOcclusal splint: a stabilization (night guard) or mandibular repositioning device intended to reduce or eliminate clenching or bruxism and to keep or reposition the jaw in a more relaxed position.

Types

Policy Revision History

2026-03-01policy_revisionLatest

Revised list of unproven and not medically necessary services (removed craniosacral manipulation/therapy) and updated coverage rationale and supporting information.

2026-03-01coding_change

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

2026-03-01administrative

OpenPayer

Treatment of Temporomandibular Joint (TMJ) Disorders