Temporomandibular Joint Dysfunction

Policy No: 68
Originally Created: 03/01/1997
Section: Miscellaneous
Last Reviewed: 10/01/2022
Last Revised: 04/01/2020
Approved: 11/21/2022
Effective: 12/01/2022

The policy applies to all dental providers.

Definitions

Temporomandibular Joint Dysfunction (TMD) - is a condition that may be characterized by one or more of the following symptoms: grating or grinding sensation, palpation pain on or around the external auditory meatus, stiffness, and locking of the jaw. The actual joint pathology may involve the ligaments, capsule (meniscus), or osseous structures and can result from either extrinsic or intrinsic factors leading to condylar displacement, injury of the meniscus, injury of the ligaments, or osteoarthritis of the condyle and/or fossa.

Policy Statement

In the review of procedures related to the diagnosis of Temporomandibular Joint Dysfunction (TMD), there must be documentation of symptoms other than muscle soreness in the area and/or headache. Headache or muscle soreness, without other symptoms, is not an indication that TMD pathology is present. Common symptoms associated with TMD are crepitus, joint pain, clicking, limited opening of the mouth, limitations in swallowing, chewing, or locking of the joint.

Radiographic imaging

Procedure

Statement

Tomography

May be considered clinically appropriate, if the clinical symptoms of TMD are present and non-surgical conservative treatment for bruxism and malocclusion have failed. Indications for tomography include:

  • pain specific to the joint,
  • crepitus,
  • evidence of severe condylar displacement, *limitation of motion and persistent pain after treatment.

Tomography (continued)

Includes full tomographic studies which may involve eleven films. The maximum allowable includes all views as one study:

  • 1 sub-mental view (SMV)
  • 3 sagittal views each side teeth closed
  • 1 sagittal view each side with maximum opening
  • 1 AP view
  • 1 trans-orbital or trans-maxillary view

Arthrogram

May be considered clinically appropriate for TMD diagnosis. Indications for an arthrogram includes:

  • suspected adhesions of the meniscus,
  • suspected perforations of the meniscus,
  • presence of joint crepitus,
  • pain and failure of conservative therapy,
  • meniscus not visible on Computed tomography (CT) or Magnetic resonance imaging (MRI),
  • when CT and MRI do not correlate with the symptoms and dynamic study of the meniscus is needed.

Transcranial x-rays

May be considered clinically appropriate for TMD diagnosis when needed to document the relationship between the condyle and the articular disc, and their relationship to the cranial fossa.

Magnetic Resonance Imaging (MRI)

  • Non-covered service.
  • Procedure is considered medical.
  • Submit on medical claim form with applicable medical Current Procedural Terminology (CPT®) code and diagnosis code.

Cephalogram

Non-covered service.

Full mouth series/Panoramic x-ray

No additional benefits will be available.

The following are conservative therapy procedures.

Conservative therapy procedures

Procedure

Statement

Physical Therapy (PT)

  • Non-covered service.
  • Procedure is considered medical.
  • Submit on medical claim form with applicable medical Current Procedural Terminology (CPT®) code and diagnosis code.

TENS

  • Non-covered service.
  • Procedure is considered medical.
  • Submit on medical claim form with applicable medical Current Procedural Terminology (CPT®) code and diagnosis code.

Electromyograph (EMG)

  • Non-covered service.
  • Considered investigational.

Mandibular Kineosiography (MKG)

  • Non-covered service.
  • Considered investigational.

Acupuncture

  • Non-covered service.
  • Procedure is considered medical.
  • Submit on medical claim form with applicable medical Current Procedural Terminology (CPT®) code and diagnosis code.

Manual assisted exerciser

Manual assisted exerciser may be considered for the post-operative period following surgical TMD procedures.

Continuous passive motion

Non-covered service.

The following are arthroscopy procedures; arthroscopy is an invasive procedure using an arthroscope and can be a diagnostic or a surgical procedure.

Arthroscopy procedures

Procedure

Statement

Arthroscopy, diagnostic

Subject to review, documentation required. If there is another arthroscopic procedure, it is considered incidental. If diagnostic arthroscopy precedes an open arthrotomy, it is considered a secondary procedure. Indications for arthroscopy surgery include:

  • Anterior disc displacement – without reduction, with pain.
  • Anterior disc displacement – with reduction, with pain, with deformed disc.
  • Anterior disc displacement – with reduction, with pain, young patient with mandibular dysfunction.
  • Fibrous adhesions in the upper or lower joint compartment.
  • Normal mandibular function, but with disc perforation, with or without osteoarthritic changes.
  • Foreign body visible on x-rays.

Arthroscopy, surgical

Subject to review, documentation required. Considered only after other forms of non-surgical therapy have failed.

Arthroscopy, surgical assistant

Non-covered service.

Arthroscopic lysis of adhesions or debridement, and lavage

Denied as incidental if performed in conjunction with another arthroscopic procedure or open surgical procedure.

Arthroscopic repair or reconstruction of the meniscus/disc

Medical necessity must be established. Referral should be accompanied by the operative report.

Surgical intervention to treat TMD may include arthroplasty, coronoidectomy, meniscectomy, condylectomy, joint or articular disc replacement.

Surgical intervention

Procedure

Statement

Arthroplasty

Indications for arthroplasty include:

  • Displaced or torn meniscus.
  • Presence of spurs, necrosis of the condyle; or arthritic deterioration.
  • Failure of conservative therapy over at least 6 months; positive arthrogram or MRI.
  • Failure of medical treatment and evidence of severe joint disease.
  • Ankylosis present.
  • All documentation needed for review should include reports from all results of testing performed, conservative treatment, history and physical and operative reports from previous procedures performed on the TMJ.

Meniscectomy with or without replacement, disc plication, & condylectomy

Are all considered incidental to the arthroplasty. If performed individually without the arthroplasty they may be reimbursed based on medical necessity.

Coronoidectomy

  • Non-covered dental service.
  • Procedure is considered medical.
  • Submit on medical claim form with applicable medical CPT® code and diagnosis code.

Total joint replacement

Pre-authorization required. The device must be FDA approved. Autografts for total joint replacement must be published and reviewed in peer-reviewed journals and be in accordance with accepted medical practice.

Microvascular second metatarsophalangeal total joint transplant

This procedure is considered experimental and investigational; therefore, a non-covered service.

The following are occlusal orthotic devices. The types of splints used for splint therapy are diagnostic, repositioning, pain control and bruxism splints.

Occlusal orthotic devices

Procedure

Statement

Diagnostic splint/acute pain reduction in TMD

  • Non-covered dental service.
  • Procedure is considered medical.
  • Submit on medical claim form with applicable medical Current Procedural Terminology (CPT®) code and diagnosis code.

Splint for treatment of myofascial pain syndrome, not TMD

  • Non-covered dental service.
  • Procedure is considered medical.
  • Submit on medical claim form with applicable medical Current Procedural Terminology (CPT®) code and diagnosis code.

Repositioning splint

The purpose of the splint is to establish a functional relaxed muscle/jaw relationship for stabilization. If no relief in six months, the patient is to be re-evaluated. Review includes:

  • Medical necessity.
  • Any future replacement splints will be reviewed on an individual consideration if outside the six months global period of a previous splint.
  • Mandibular repositioning sleep device, snore guard, etc., for sleep apnea: refer to medical policy for sleep apnea.

Bruxism splint

Non-covered dental service.

Dental services which are not eligible for medical benefits under TMD guidelines are:

  • Occlusal equilibration
  • Full mouth reconstruction
  • Dentures
  • Orthodontia
  • Appliance or restoration to increase vertical dimension or restore occlusion

Current Dental Terminology (CDT®) codes

CDT

Description

D0320

Temporomandibular Joint Arthrogram, Including Injection

D0321

Other Temporomandibular Joint Radiographic Images, By Report

D0322

Tomographic Survey

D7810

Open Reduction of Dislocation

D7820

Closed Reduction of Dislocation

D7830

Manipulation Under Anesthesia

D7840

Condylectomy

D7850

Surgical Discectomy, With/Without Implant

D7852

Disc Repair

D7854

Synovectomy

D7856

Myotomy

D7858

Joint Reconstruction

D7860

Arthrotomy

D7865

Arthroplasty

D7870

Arthrocentesis

D7871

Non - Arthroscopic Lysis and Lavage

D7872

Arthroscopy - Diagnosis, With or Without Biopsy

D7873

Arthroscopy - Surgical: Lavage and Lysis of Adhesions

D7874

Arthroscopy - Surgical: Disc Repositioning and Stabilization

D7875

Arthroscopy - Surgical: Synovectomy

D7876

Arthroscopy - Surgical: Discectomy

D7877

Arthroscopy - Surgical: Debridement

D7880

Occlusal Orthotic Device, By Report

D7899

Unspecified TMD Therapy, By Report (Please submit with detailed descriptions of services rendered).

D7991

Coronoidectomy

References

American Dental Association, Current Dental Terminology (CDT®)

Policy Cross References

Administrative Guidelines to Determine Dental vs Medical Services, Medical Policy

Disclaimer

Your use of this Dental Policy constitutes your agreement to be bound by and comply with the terms and conditions of the Dental Policy Disclaimer.