CurrentUnitedHealthcarePolicy CS088ID.B

Orthognathic (Jaw) Surgery (for Idaho Only)

UnitedHealthcare medical policy (Idaho only, including Idaho Medicaid Plus) that defines reconstructive/medically necessary indications and exclusions for orthognathic (jaw) surgery, documentation requirements for review, applicable procedure and dental codes for reference, and supporting evidence and guidance.

Policy Summary

PayerUnitedHealthcare

PolicyOrthognathic (Jaw) Surgery (for Idaho Only)

Policy CodePolicy CS088ID.B

Change TypeDocumentation requirements added; supporting info updated

Effective DateMay 1, 2026

Next Review Date

Key ActionEnsure the patient medical record fully documents medical necessity (history, exam, and pertinent diagnostic results) and is legible and available upon request.

POLICY UPDATE CHANGES

Medical Records Documentation Used for Review section added language clarifying documentation requirements to support medical necessity.

Clinical Evidence and References sections updated to reflect current information.

7Key objective clinical criteria groups

≥2 SDDeviation threshold used in multiple criteria

May 1, 2026Policy effective date

Coverage Summary

This UnitedHealthcare medical policy (Idaho only, including Idaho Medicaid Plus) defines reconstructive/medically necessary indications and exclusions for orthognathic (jaw) surgery and is effective May 1, 2026 (Policy Number CS088ID.B). The policy’s clinical purpose is to define when orthognathic surgery to correct skeletal abnormalities of the mandible, maxilla, or both is considered Reconstructive and medically necessary—for example to improve facial form and function in congenital anomalies, developmental conditions, trauma, or systemic disease—and to require documentation to support medical necessity. The policy coverage stance is covered_with_criteria and the policy number is CS088ID.B.

Key thresholds and policy metadata

Anteroposterior incisor overjet>= 5 mm or 0 to negative value

Anteroposterior molar discrepancy>= 4 mm (norm 0 to 1 mm)

Vertical facial deformity deviation>= 2 standard deviations from published norms

Posterior open bite> 2 mm

Transverse discrepancy (bilateral)>= 4 mm

Transverse discrepancy (unilateral)>= 3 mm

Asymmetry magnitude> 3 mm

Policy effective dateMay 1, 2026

Last review dateMay 1, 2026

Medically Necessary and Exclusion Criteria

Not Medically Necessary / Cosmetic Exclusion

Orthognathic surgery is not considered Reconstructive and medically necessary for:

ANY of the following

All other indications not meeting the reconstructive/functional criteria above
When performed for Cosmetic purposes only (procedures or services that change or improve appearance without significantly improving physiological function)

Quick-reference numeric thresholds

>= 2 standard deviationsNumeric deviation threshold used across vertical and transverse criteria

Posterior open bite threshold> 2 mm

Anteroposterior incisor overjet threshold>= 5 mm or 0 to negative

Molar relationship discrepancy threshold>= 4 mm

Transverse discrepancy thresholdsBilateral >= 4 mm / Unilateral >= 3 mm

Asymmetry threshold> 3 mm

Reference Procedure and Dental Codes

Referenced CDT/Dental Codesmixed

D5934	Mandibular resection prosthesis with guide flange
D5935	Mandibular resection prosthesis without guide flange
D5982	Surgical stent
D5988	Surgical splint
D7471	Removal of lateral exostosis (maxilla or mandible)
D7472	Removal of torus palatinus
D7473	Removal of torus mandibularis
D7490	Radical resection of maxilla or mandible
D7610	Maxilla - open reduction (teeth immobilized, if present)
D7630	Mandible - open reduction (teeth immobilized if present)

1–10 of 33

1/4

Provider Actions & Requirements

Documentation Required

Medical record documentation required

The patient's medical record must contain documentation that fully supports the medical necessity for the requested services. This includes, but is not limited to, relevant medical history, physical examination, and results of pertinent diagnostic tests or procedures. Documentation should be legible, maintained in the patient's medical record, and made available upon request. Benefit coverage is determined by federal, state, or contractual requirements and applicable laws.

Relevant medical history
Physical examination findings
Pertinent diagnostic test/procedure results
Legible records maintained and available upon request

Prior Authorization

Prior authorization review

Medical records documentation may be required to assess whether the member meets the clinical criteria for coverage. Such documentation does not guarantee coverage; benefit coverage is determined by federal, state, or contractual requirements and applicable laws.

Documentation may be requested for prior authorization review
Submission of records does not assure approval

Billing Rule

Code listing provided for reference

The CPT and CDT codes listed are provided for reference only. Inclusion of a code does not imply coverage or guarantee payment; benefit coverage is determined by federal, state, or contractual requirements and applicable laws.

21076
21079
21080
21081
21082
21083
21120
21121
21122
21123
21125
21127
21141
21142
21143
21145
21146
21147
21150

Background, Evidence & Definitions

Orthognathic surgery corrects skeletal abnormalities of the mandible, maxilla, or both to improve facial form and function; it may be required for congenital anomalies, developmental issues, trauma, or systemic disease and is often performed in combination with orthodontic therapy as part of comprehensive rehabilitative care.

Citation	Summary
Bunpu et al. 2023
Systematic review/meta-analysis: orthognathic surgery improves masticatory performance but may not reach normal occlusion; severity influences improvement (1,238 individuals)
Mulier et al. 2021
Systematic review: limited evidence on long-term stability; variability in dental/dentolabial stability; need for prospective studies
Wei et al. 2018
Systematic review: surgery-first approach may yield poorer postoperative stability vs orthodontics-first
Haas Junior et al. 2017
Systematic review: complication rate after segmental Le Fort I osteotomy ~8.5% in analyzed studies; limitations noted
AAOMS 2025
Clinical practice guidelines listing verifiable clinical measurements indicating orthognathic surgery may be medically necessary

Term	Definition
Cosmetic Procedures
Procedures or services that change or improve appearance without significantly improving physiological function.
Functional or Physical Impairment
Deviation from normal function resulting in significantly limited capacity to perform physical activities or basic life functions.
Reconstructive Procedures
Procedures whose primary purpose is treatment of a medical condition or improvement/restoration of physiologic function; related to injury, sickness, or congenital anomaly.

Revision History

2026-05-01policy_updateLatest

Added language to the 'Medical Records Documentation Used for Reviews' section clarifying that benefit coverage is determined by federal, state, or contractual requirements and that medical records documentation may be required to assess whether the member meets clinical criteria but does not guarantee coverage. Specified that the patient's medical record must contain documentation supporting medical necessity (including relevant medical history, physical exam, and pertinent diagnostic test/procedure results), that documentation should be legible and maintained in the record, and must be made available upon request.

2026-05-01supporting_information_update

Updated Clinical Evidence and References sections to reflect the most current information; previous policy version CS088ID.A archived.