Orthodontia - Medically Necessary Orthodontia Care
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Defines criteria and documentation requirements for review and preauthorization of medically necessary orthodontic treatment for members whose contracts permit medical/dental necessity review; distinguishes medically necessary from cosmetic orthodontia.
No material clinical or coverage changes in this revision.
Coverage Criteria
Medically Necessary Orthodontia Care (MNOC)
Covered when ALL of the following are met (and when allowed by member contract and applicable state/group thresholds):
Examples include cleft palate, severe open bite, severe Class II with palatal impingement, severe Class III, Treacher Collins Syndrome.
Preauthorization is required prior to initiation of services.
See documentation module for full list of 10 required items.
Cosmetic orthodontia care and minor corrections of malocclusion that are not dysfunctional are not considered medically or dentally necessary. The plan distinguishes these services from medically necessary treatment because their primary purpose is aesthetic improvement rather than prevention, diagnosis, or treatment of a dental injury or disease.
Orthodontic services provided solely to correct malocclusion that is not dysfunctional (that is, malocclusion that does not severely interfere with mastication, speech, or oral hygiene) are not medically necessary. Handicapping esthetic diagnoses are not used as the basis for medical necessity determinations, and minor corrections intended primarily for cosmetic benefit are excluded from coverage.
Coding — Procedure and Index
| D8010 | Limited orthodontic treatment of the primary dentition. |
| D8020 | Limited orthodontic treatment of the transitional dentition. |
| D8030 | Limited orthodontic treatment of the adolescent dentition. |
| D8040 | Limited orthodontic treatment of the adult dentition. |
| D8070 | Comprehensive treatment of the transitional dentition. |
| D8080 | Comprehensive treatment of the adolescent dentition. |
| D8090 | Comprehensive treatment of the adult dentition. |
| D8660 | Pre-orthodontic treatment examination to monitor growth and development. |
| D8670 | Periodic orthodontic treatment visit. |
| D8693 | Re-cement or re-bond fixed retainer. |
Provider Actions and Requirements
Preauthorization and HLD scoring required
Medically necessary orthodontic services require preauthorization and validation using a recognized index. The policy specifies the Handicapping Labio‑Lingual Deviation (HLD) Index with a minimum qualifying score of 26 points unless a different state/group threshold applies.
Step therapy: not applicable
No step therapy requirements apply for orthodontic services under this policy.
Required documentation for preauthorization
Submit the complete clinical package listed below with any preauthorization request; incomplete submissions may delay review.
- Completed HLD Scoring Index
- Orthodontic treatment plan
- Narrative describing the severe physically handicapping malocclusion
- Panoramic and/or mounted full‑mouth radiographs
- Cephalometric radiograph with tracing (teeth in centric occlusion)
- Facial frontal and profile photographs
- Intraoral right, left, and anterior photographs
- Maxillary and mandibular occlusal photographs
- Photographs of articulated study models or CAD/CAM electronic equivalent (all views)
- When surgery is planned: surgical treatment plan and letter of medical necessity
Denial risk for non‑medical or non‑covered services
Services that do not meet the plan's medical or dental necessity criteria or that are not a covered benefit per the member's contract may be denied.
Background
Medically necessary orthodontic care (MNOC) is intended to treat severe handicapping malocclusions that significantly impair function — for example, problems that interfere with proper mastication, speech, or the ability to maintain good oral hygiene. Examples include cleft palate, severe open-bite deformities, severe Class II with palatal impingement, severe Class III malocclusions, Treacher Collins syndrome, and severe dento‑facial trauma. Documented craniofacial deformities that create a handicapping malocclusion automatically qualify for MNOC. Conversely, treatments whose primary goal is cosmetic improvement or minor malocclusion corrections are not considered medically necessary.
Definitions
Revision History
Policy effective date set to January 1, 2024.
Policy last reviewed on November 1, 2023.
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