CurrentBlue Cross Blue Shield - NevadaPolicy N/A

Crowns, Inlays, and Onlays — Indirect Restorations Coverage Criteria

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Policy governing coverage criteria, documentation, and coding for indirect restorative dental procedures (inlays, onlays, partial and full crowns) for individual teeth under Blue Cross Blue Shield - Nevada.

Policy Summary

PayerBlue Cross Blue Shield - Nevada

PolicyCrowns, Inlays, and Onlays — Indirect Restorations Coverage Criteria

Policy CodePolicy N/A

Change TypeNo material change

Effective DateJan 1, 2021

Next Review DateN/A

Key ActionSubmit current (within 1 year), dated pretreatment radiographs and required documentation to support medical/dental necessity; prior authorization may be required per contract.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

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CurrentBlue Cross Blue Shield - NevadaPolicy N/A

Crowns, Inlays, and Onlays — Indirect Restorations Coverage Criteria

Customize your policy alerts

Sign up for all Blue Cross Blue Shield - Nevada policy alerts

Know when Blue Cross Blue Shield - Nevada releases new policies or updates existing guidance.

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Policy Summary

PayerBlue Cross Blue Shield - Nevada

PolicyCrowns, Inlays, and Onlays — Indirect Restorations Coverage Criteria

Policy CodePolicy N/A

Change TypeNo material change

Effective DateJan 1, 2021

Next Review DateN/A

Key ActionSubmit current (within 1 year), dated pretreatment radiographs and required documentation to support medical/dental necessity; prior authorization may be required per contract.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

>=50%Significant loss threshold

1 yrRadiograph timeframe

6-pointPeriodontal charting

12/4/20Revision history thru

Coverage Criteria for Indirect Restorations

Medically necessary criteria for indirect restorations

Covered when ALL of the following apply (and subject to group contract terms):

Structural loss (anterior): Anterior tooth must demonstrate significant loss of coronal tooth structure (50% or more) and/or involvement of one or both incisal angles or cusp tip (canines)>=50%

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Structural loss (posterior): Posterior tooth must demonstrate significant missing tooth structure (50% or more) and/or large restorations that compromise function, or loss of support for one or more cusps where cusps are undermined>=50%

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Fracture from external trauma: Fractured teeth from external blow or blunt trauma must first be referred to the member's medical/health plan; if treated under dental benefits the fracture must involve missing tooth structure that extends into dentinn/a

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Enamel-only defects: Teeth with developmental grooves or craze lines confined to enamel do not qualify for indirect restoration coveragen/a

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Endodontic status: No untreated or unresolved periapical or periradicular pathology; placement on a tooth with an unresolved carious lesion near the pulp requires planned endodontic therapy. Endodontic obturation should approximate the apical constriction (ideal 0.5–1.2 mm) with appropriate fill density; gross overextension or significant underfill may preclude benefitsee Dental Policy 03-001

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Periodontal status: Teeth with uncontrolled or untreated periodontal disease (radiographic or periodontal charting evidence of bone loss, furcation involvement, mobility) are not eligible unless definitive periodontal therapy and maintenance have been performed or are planned; current dated 6-point periodontal charting may be requestedmay require current dated 6-point periodontal charting

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Primary tooth (adult dentition) criteria: For a primary tooth within an adult dentition to be considered for full-coverage indirect restoration, radiographs must show intact root structure, adequate periodontal support, no active periodontal disease, and occlusal function with an opposing tooth; imaging must show no permanent successor or that the successor is unlikely to eruptn/a

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Temporary/provisional crowns: A temporary or provisional crown is considered a component of the final restoration and is not eligible for a separate benefitn/a

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Cracked tooth syndrome: Indirect restoration is appropriate only when chart documentation supports the diagnosis and treatment plan, including patient symptoms (onset, frequency, duration), oral exam findings, endodontic evaluation showing no irreversible pulpal involvement, and confirmation of structural integrity without root fracture below soft tissue attachmentn/a

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Exclusions / contract-dependent denials

Not covered or contract dependent when any of the following apply:

Non-covered clinical indications: Indirect restorations placed for occlusal alterations or changes in vertical dimension, for treatment of TMJ/craniomandibular disorders, for cosmetic reasons (discoloration, misshape), or to correct developmental or congenital defects are not coveredn/a

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Survey/guide plane use: Indirect restorations placed solely to function as survey crowns or guide planes for removable partial dentures are not a covered benefitn/a

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Closure of contacts: Benefits will not be considered for closure of contacts unless caused by caries, tooth fracture, or a defective restorationn/a

Crowns and other indirect restorations are not covered or may be contract-dependent when used primarily for occlusal alterations or changes to vertical dimension, for treatment of temporomandibular joint disorder (TMD/TMJ), or for purely cosmetic reasons such as correcting discoloration or tooth shape. Coverage is also excluded for crowns placed to correct developmental or congenital defects, and when used solely as survey crowns or guide planes for removable partial dentures. These exclusions reflect criteria that the tooth must otherwise meet clinical necessity standards for indirect restoration rather than being restored for non-functional or purely esthetic purposes.

This guideline does not itself establish plan coverage for every line of business. Federal and State law, contract language, and specific Dental Policy take precedence, and individual plans or lines of business may choose whether to adopt or apply this Clinical UM Guideline. Contact the customer service number on the member’s ID card to determine whether review or prior authorization is required for a given plan.

Indirect restorations placed solely to repair tooth structure lost from non-pathologic etiologies — including attrition, abrasion, erosion, or abfraction — are generally considered not medically necessary under most group contracts. Such etiologies are managed differently across payers and typically do not meet the functional/structural criteria required for coverage of crowns, inlays, or onlays.

Coding and Procedure Codes

CDT codes (informational)CDT

D2510	Inlay - metallic - one surface
D2520	Inlay - metallic - two surface
D2530	Inlay - metallic - three or more surface
D2542	Onlay - metallic - two surface
D2543	Onlay - metallic - three surface
D2544	Onlay - metallic - four or more surfaces
D2610	Inlay - porcelain/ceramic - one surface
D2620	Inlay - porcelain/ceramic - two surfaces
D2630	Inlay - porcelain/ceramic - three or more surfaces
D2642	Onlay - porcelain/ceramic - two surfaces

1–10 of 43

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Diagnosis codingICD-10

ICD-10-CM

Use current CDT code book / ICD-10-CM diagnoses for dental diseases and conditions

CDT codes (procedure)mixed

See CDT

Refer to current CDT code book for specific procedure codes for crowns, inlays, onlays

Diagnosis codesICD-10

ICD-10-CM

Diagnoses for dental diseases and conditions per current ICD-10-CM; see CDT code book reference

Significant coronal tooth structure loss threshold

Threshold>= 50% coronal tooth structure loss

Applies toAnterior and posterior teeth where 50% or more of coronal tooth structure is missing

Clinical implicationConsider indirect restoration when missing structure compromises function or involves incisal angles/cusp tips

Provider Requirements, Documentation, and Denial Risks

Prior Authorization

Prior Authorization and Required Codes

Prior authorization may be required for indirect restorations (crowns, inlays, onlays) depending on group contract. Submit documentation and radiographs to support medical/dental necessity per contract terms.

Prior authorization subject to plan/line of business rules
Submit current (within 1 year) pretreatment radiograph(s) including radiographic apex
Include clinical chart notes, intra-oral photos, and 6‑point periodontal charting when requested

Note

Prior Authorization Determination

Plans or lines of business may choose whether to implement this guideline for utilization review. Contact the customer service number on the member's ID card to determine applicability for a given contract.

Applicability varies by plan/line of business
Contact customer service to confirm if review is required for this guideline

Definitions and Terminology

Significant loss of tooth structure — definition

DefinitionSignificant loss of tooth structure: generally defined as loss of 50% or more of coronal tooth structure or undermining/loss of support of one or more cusps

Anterior teeth specificsIncludes involvement of one or both incisal angles (and for canines, cusp tip involvement)

Posterior teeth specificsIncludes missing tooth structure (>=50%), large restorations that compromise function, or undermined cusps needing cusp support

Delivery date definition

DefinitionDelivery date: the date of initial cementation of the indirect restoration regardless of cement type

Contract noteSome group contracts may instead consider preparation date for benefit determination; verify contract terms

Background

Indirect restorations (inlays, onlays, partial and full crowns) restore teeth that have extensive decay, large defective restorations, or traumatic fracture when a direct restoration (amalgam or resin composite) cannot reasonably restore form and function. Appropriate candidacy depends on structural loss (generally defined as ≥ 50% loss of coronal tooth structure for anterior or posterior teeth), endodontic status (no unresolved periapical/periradicular pathology and acceptable obturation when previously treated), and periodontal considerations including whether definitive periodontal therapy and maintenance have been performed or planned. Fractures due to external trauma may be evaluated through medical plans first if applicable.

Revision History

2020-12-04Annual revision

Annual revision of the Clinical UM Guideline approved by the committee (nature noted as 'Annual Revision').

2020-08-26Annual review

Annual review performed and documented by the committee (nature noted as 'Annual Review').

2019-07-03Editorial update

Verbiage updated in the policy and changes approved by the committee.

Policy Summary

PayerBlue Cross Blue Shield - Nevada

PolicyCrowns, Inlays, and Onlays — Indirect Restorations Coverage Criteria

Policy CodePolicy N/A

Change TypeNo material change

Effective DateJan 1, 2021

Next Review DateN/A

Key ActionSubmit current (within 1 year), dated pretreatment radiographs and required documentation to support medical/dental necessity; prior authorization may be required per contract.

SourceLink

On This Page

Etiology exclusions (wear-related): Indirect restorations placed for repair of complications from attrition, abrasion, erosion, or abfraction are not a covered benefit per most group contractsn/a

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Treatment for TMD: Crowns placed to treat temporomandibular disorder (TMD) or to alter occlusion may be excluded or contract dependentn/a

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Cosmetic-only restorations: Teeth that are discolored or misshapen where restoration is solely for cosmetic improvement do not qualify for indirect restoration coveragen/a

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Documentation Required

Restoration Sequencing and Temporaries

When alternating between indirect and direct restorations, or when temporaries are used, document the sequence of treatment and rationale. Temporary crowns/provisionals are considered part of the final restoration and are not eligible for separate benefit unless contract specifies otherwise.

Document treatment sequencing when switching from composite/amalgam to indirect restoration
Temporary/provisional crowns considered component of final restoration — no separate benefit

Documentation Required

Required Documentation

Ensure pretreatment diagnostic radiographs are current within 1 year, clearly dated and identified, and include the radiographic apex. Be prepared to provide intra-oral photographs, clinical chart notes, and a current 6‑point periodontal chart when requested.

Radiographs must be dated and include apex (within 1 year)
Provide intra‑oral photos and chart notes when radiographs alone do not demonstrate indication
6‑point periodontal charting and periodontal history may be requested prior to benefit determination

Documentation Required

Cracked Tooth Documentation

For cracked tooth syndrome, document patient's symptoms, clinical findings, diagnosis, endodontic evaluation, and details on structural integrity to support the need for an indirect restoration.

Chart documentation of oral complaints, onset, frequency, duration
Clinical exam findings and diagnosis
Endodontic evaluation and status, and structural integrity of the tooth

Billing Rule

Coding Practice Note

Use the current CDT code book for procedure coding and reference ICD‑10‑CM diagnoses for dental diseases and conditions as applicable. Ensure billing aligns with contract definitions of covered services.

Follow current CDT for procedure codes
Reference ICD‑10‑CM for diagnoses as noted in CDT guidance
Coverage subject to specific contract language

Denial Risk

Denial Triggers Related to Endodontic Status

Do not place an indirect restoration on a tooth with untreated or unresolved periapical/periradicular pathology, unresolved endodontic issues, internal/external resorption, or an active carious lesion near the pulp unless endodontic therapy and satisfactory obturation have been completed and documented.

Indirect restorations contraindicated with unresolved periapical/periradicular pathology
Endodontic obturation should approximate the apical constriction (ideal 0.5–1.2 mm) with appropriate fill density
Teeth with internal or external resorption generally not considered for benefit

Denial Risk

Denial Trigger: Non‑Covered Etiologies

Indirect restorations placed solely for attrition, abrasion, erosion, abfraction, cosmetic alteration, occlusal alteration, changes in vertical dimension, TMJ treatment, or to correct discoloration/misshape are generally not covered per most group contracts; verify contract-specific exclusions.

Crowns for occlusal alteration, TMJ treatment, or cosmetic reasons typically not eligible for benefits
Crowns for developmental or congenital defects are not covered
Coverage may be contract dependent

Note

Regulatory and Contract Precedence

Federal and State law, contract language, and applicable Dental Policy take precedence over these Clinical UM Guidelines. Plans reserve the right to periodically review and update guidelines; confirm applicability with the plan's customer service.

Federal and State law and contract language supersede Clinical UM Guidelines
Dental Policy and specific contract terms govern final benefit determination
Plans may choose whether to implement this guideline for utilization review

Practical useUse delivery date to determine coverage timing when cementation date is relevant to benefits

CDT / Dental Terminology

Coding guidanceRefer to the current CDT code book for specific procedure codes and ICD-10-CM diagnoses for dental conditions

Glossary referenceADA Glossary of Clinical and Administrative Terms available via the ADA website (see CDT resources)

2019-04-22Technical update

Criteria numbering updated; change credited to SME Kahn.

2019-03-04RevisionLatest

External-facing policy revised and approved by the committee.