CurrentUnitedHealthcarePolicy CS088KS.03

Orthognathic (Jaw) Surgery (for Kansas Only)

UnitedHealthcare Kansas medical policy defining when orthognathic (jaw) surgery is considered reconstructive and medically necessary, referencing InterQual CP criteria and additional measurable skeletal deformity and functional impairment criteria; includes applicable procedure and dental codes and exclusions.

Policy Summary

PayerUnitedHealthcare

PolicyOrthognathic (Jaw) Surgery (for Kansas Only)

Policy CodePolicy CS088KS.03

Change TypeCodes updated; descriptions revised

Effective DateFeb 1, 2026

Next Review Date

Key ActionProvider must document specific measurable skeletal deformity (per thresholds) and at least one qualifying functional impairment, or meet InterQual CP criteria, to support medical necessity for orthognathic surgery.

POLICY UPDATE CHANGES

Updated list of applicable CDT codes to reflect annual edits; revised description for D5934 and D5935.

InterQualPrimary criteria source

ProvidedNumeric coverage thresholds

ExcludedCosmetic-only exclusions

Coverage Summary

scope_summary: UnitedHealthcare Kansas medical policy defining when orthognathic (jaw) surgery is considered reconstructive and medically necessary, referencing InterQual CP criteria and additional measurable skeletal deformity and functional impairment criteria; includes applicable procedure and dental codes and exclusions.

Overview: Orthognathic surgery is considered Reconstructive and medically necessary when the InterQual CP criteria for orthognathic surgery are met or when documented, measurable skeletal deformity criteria AND at least one qualifying functional impairment are present. Measurable skeletal criteria include specific numeric thresholds for anteroposterior, vertical, transverse, and asymmetry deformities (e.g., horizontal overjet ≥ 5 mm or 0 to negative value; molar discrepancy ≥ 4 mm; vertical deformity ≥ 2 standard deviations from norms; posterior open bite > 2 mm; transverse discrepancy ≥ 2 standard deviations; bilateral palatal cusp to mandibular fossa discrepancy ≥ 4 mm or unilateral ≥ 3 mm; asymmetry > 3 mm with occlusal asymmetry). Required functional impairments include masticatory/swallowing dysfunction (examples: inability to bite/chew solid foods, choking on incompletely masticated foods, tissue damage during mastication, malnutrition) or documented speech impairment. Policy number: CS088KS.03. Status: CURRENT.

Numeric thresholds

Horizontal overjet>= 5 mm or 0 to negative value (incisor relationship)

Anteroposterior molar discrepancy>= 4 mm

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

Posterior open bite> 2 mm

Transverse skeletal discrepancy>= 2 standard deviations from published norms

Maxillary palatal cusp to mandibular fossa discrepancyBilateral >= 4 mm; Unilateral >= 3 mm

Asymmetry> 3 mm with concomitant occlusal asymmetry

Medical Necessity / Reconstructive Criteria

InterQual Criteria

Primary medical/surgical criteria

InterQual reliance

Orthognathic Surgery - refer to InterQual CP: Procedures: Orthognathic Surgery
Orthognathic Surgery (Pediatric) - refer to InterQual CP: Procedures: Orthognathic Surgery (Pediatric)

Not Medically Necessary / Exclusions

Exclusions

Orthognathic Surgery performed for cosmetic purposes only is not considered Reconstructive and medically necessary
This policy does not address surgical treatment for obstructive sleep apnea or temporomandibular joint disorders; refer to those specific Kansas-only policies

Provider Actions & Authorization

Documentation Required

Document skeletal measurements and functional impairment

Provider must document specific measurable skeletal deformity (per thresholds) and at least one qualifying functional impairment, or meet InterQual CP criteria, to support medical necessity for orthognathic surgery.

Prior Authorization

InterQual criteria/protocol reliance

Coverage determination relies on InterQual CP criteria for Orthognathic Surgery (adult and pediatric); providers should reference InterQual and submit evidence that InterQual criteria are met when requesting authorization.

Reference InterQual CP: Procedures: Orthognathic Surgery (adult and pediatric) and include documentation demonstrating how InterQual criteria are met when submitting an authorization request.

Documentation expectations: Providers must document specific, measurable skeletal measurements that meet the policy thresholds (for example, horizontal overjet ≥ 5 mm; molar discrepancy ≥ 4 mm; vertical or transverse deformities ≥ 2 standard deviations from published norms; posterior open bite > 2 mm; bilateral palatal cusp to mandibular fossa discrepancy ≥ 4 mm or unilateral ≥ 3 mm; asymmetry > 3 mm with occlusal asymmetry).

In addition, documentation must show at least one qualifying functional impairment (e.g., masticatory/swallowing dysfunction or documented speech impairment). Inclusion of CPT, CDT, or dental procedure codes in the policy’s reference lists is for informational purposes only and does not imply coverage.

Applicable Procedure / Dental Codes

Referenced CPT / CDT / Dental procedure codes (listed for reference; inclusion does not imply coverage)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.

1–10 of 71

1/8

Referenced CPT/CDT/dental procedure codes are listed for reference; inclusion does not imply coverage. Use prior authorization guidance and the InterQual criteria to determine coverage for specific codes and submit supporting clinical documentation when requesting authorization.

Background, Evidence & Definitions

Background: Orthognathic surgery corrects skeletal abnormalities of the mandible and/or maxilla to improve facial form and physiologic function. These abnormalities may be congenital, developmental, traumatic, or disease-related. The primary goal is to restore facial form and function, and treatment is often performed in combination with adjunctive orthodontic therapy (pre- and/or postoperative orthodontics) to optimize occlusion and long-term outcomes.

Systematic reviews/meta-analyses: Multiple systematic reviews (2017–2023) report that orthognathic surgery improves masticatory function and yields variable long-term stability; overall evidence is limited by retrospective study designs, small sample sizes, and heterogeneous follow-up. Reviews note improved masticatory performance after surgery but not always to the level of normal occlusion, variable dental and dentolabial stability over time, and complication rates generally reported in observational studies.

AAOMS guidance: The American Association of Oral and Maxillofacial Surgeons (AAOMS) 2025 clinical paper provides measurement-based thresholds and indications that align with this policy’s numeric criteria (for example, anteroposterior norms and thresholds, vertical and transverse criteria, open-bite and overbite specifications, and asymmetry thresholds) and supports using verifiable clinical measurements to document significant facial skeletal deformities associated with masticatory malocclusion.

Cosmetic Procedures: Procedures or services that change or improve appearance without significantly improving physiological function.

Functional or Physical Impairment: Deviation from normal function of a tissue or organ causing a significantly limited, impaired, or delayed 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; includes surgery related to injury, sickness, or congenital anomaly and not performed solely to change appearance.