CurrentUnitedHealthcarePolicy CS088.W

Orthognathic (Jaw) Surgery

Defines UnitedHealthcare's medical necessity (reconstructive) coverage criteria for orthognathic (jaw) surgery, lists applicable procedure/diagnosis codes for reference, exclusions, documentation expectations, and policy history. Excludes certain states where separate state policies apply.

Policy Summary

PayerUnitedHealthcare

PolicyOrthognathic (Jaw) Surgery

Policy CodePolicy CS088.W

Change TypeApplicable Codes updated

Effective DateFeb 1, 2026

Next Review Date

Key ActionMedical records documentation may be required to assess whether the member meets the clinical criteria for coverage; adherence to federal, state, and contractual requirements governs final coverage determination.

POLICY UPDATE CHANGES

Applicable Codes updated: Updated list of applicable CDT codes to reflect annual edits and revised descriptions for D5934 and D5935.

1Primary Coverage Position (Reconstructive with criteria)

1Primary Exclusion (Cosmetic only)

40+Procedure/Reference Codes Listed

Coverage Summary

Policy Number: CS088.W. Subject: Orthognathic (Jaw) Surgery. Status: CURRENT. Effective Date / Last Review: February 1, 2026. Scope: Defines UnitedHealthcare's medical necessity (reconstructive) coverage criteria for orthognathic surgery, lists applicable procedure and reference codes, documentation expectations, exclusions, and policy history. Coverage stance: Reconstructive with criteria — procedures may be considered medically necessary when the specified clinical thresholds and functional impairment requirements are met.

Exclusions: Surgical treatment for obstructive sleep apnea (OSA) and temporomandibular joint (TMJ) disorders are not addressed by this policy and are governed by other medical policies (see Obstructive and Central Sleep Apnea Treatment and Treatment of Temporomandibular Joint Disorders).

Surface thresholds

Established norm for anteroposterior discrepancy2 mm

Horizontal overjet threshold>= 5 mm or 0 to negative value

Molar relationship discrepancy>= 4 mm (norm 0 to 1 mm)

Open bite posterior threshold> 2 mm (unilateral or bilateral posterior open bite)

Transverse cusp-fossa discrepancyTotal bilateral >= 4 mm or unilateral >= 3 mm (with normal axial inclination)

Asymmetry threshold> 3 mm with concomitant occlusal asymmetry

Vertical/transverse deviations descriptionTwo or more standard deviations from published norms for accepted skeletal landmarks

Reconstructive / Medically Necessary Criteria

Provider Actions & Documentation

Documentation Required

Medical record documentation required for review

Medical records documentation may be required to assess whether the member meets the clinical criteria for coverage; adherence to federal, state, and contractual requirements governs final coverage determination. Medical records documentation does not guarantee coverage of the service requested.

Documentation Required

Functional impairment documentation

Providers must document at least one functional impairment attributable to the facial skeletal deformity to meet coverage criteria. Acceptable functional impairments include masticatory and swallowing dysfunction (e.g., inability to bite or chew solid foods, choking on incompletely masticated foods, damage to soft tissue during mastication, malnutrition) or documented speech impairment due to the skeletal deformity.

Applicable CPT/Procedure Codes (reference list)

Applicable CPT/Procedure Codes (reference list)mixed

21076	Impression and custom preparation; surgical obturator prosthesis.
21079	Impression and custom preparation; interim obturator prosthesis.
21080	Impression and custom preparation; definitive obturator prosthesis.
21081	Impression and custom preparation; mandibular resection prosthesis.
21082	Impression and custom preparation; palatal augmentation prosthesis.
21083	Impression and custom preparation; palatal lift prosthesis.
21120	Genioplasty; augmentation (autograft, allograft, prosthetic material).
21121	Genioplasty; sliding osteotomy, single piece.
21122	Genioplasty; sliding osteotomies, 2 or more osteotomies.
21123	Genioplasty; sliding, augmentation with interpositional bone grafts (includes obtaining autografts).

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Background, Evidence, and Definitions

Orthognathic surgery is the surgical correction of skeletal abnormalities of the mandible and/or maxilla to improve facial form and physiologic function; it is often combined with orthodontic therapy and may address congenital anomalies, traumatic injury, or sequelae of systemic disease. The primary goal of treatment is to improve facial form and function by correcting the skeletal abnormality.

Note: This policy excludes surgical treatment for obstructive sleep apnea (OSA) and temporomandibular joint (TMJ) disorders — those indications should be evaluated under their respective medical policies.

Study / Guideline	Key finding
Bunpu et al. 2023 systematic review	Orthognathic surgery improves masticatory performance but may not reach normal occlusion; severity affects improvement; additional long-term studies needed.
Mulier et al. 2021 systematic review	Long-term dental/dentolabial stability variable; evidence limited; more prospective studies needed.
Wei et al. 2018 systematic review	Surgery-first approach may yield poorer postoperative stability than orthodontics-first; further research needed.
Haas Junior et al. 2017 systematic review	Segmental Le Fort I osteotomy complications observed in ~8.5% of cases; data largely retrospective.
AAOMS 2025 guideline	Provides verifiable clinical measurements that align with policy thresholds for indications.

Term	Definition
Cosmetic Procedures	Procedures that change or improve appearance without significantly improving physiological function.
Functional or Physical Impairment	Deviation from normal function causing significantly limited capacity to perform physical activities, demonstrated by difficulties in physical/motor tasks 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 and not primarily for appearance change.

Revision History

2026-02-01archival

Archived previous policy version CS088.V.

2026-02-01supporting_information_updated

Supporting information updated.

2026-02-01codes_updatedLatest