CurrentUnitedHealthcarePolicy DCPO21.10

Core Buildup, Post and Core, and Pin Retention

Clinical dental policy governing indications and coding for restorative foundation procedures (core buildup, post and core, pin retention, and post removal) for UnitedHealthcare dental plans; applies when determining coverage for members and informing providers.

Policy Summary

PayerUnitedHealthcare

PolicyCore Buildup, Post and Core, and Pin Retention

Policy CodePolicy DCPO21.10

Change TypeTemplate update; reclassification to Clinical Policy

Effective DateJun 1, 2025

Next Review Date

Key ActionDetermine benefit coverage and any prior authorization requirements using the member specific benefit plan document.

SourceLink

POLICY UPDATE CHANGES

Changed policy type classification from "Coverage Guideline" to "Clinical Policy" and updated Description of Services and References sections.

8CDT procedure codes listed

2025-06-01Effective date

DCPO21.10Policy identifier

Coverage Criteria

Indications

Core Buildup Indication: Core buildup is indicated for teeth with significant loss of coronal tooth structure due to caries or trauma in which insufficient tooth structure remains to adequately retain an Indirect Restoration.significant loss of coronal structure

Not indicated as a definitive composite/amalgam restoration, as a filler to correct preparation irregularities, or for retention of intracoronal restorations.

Restorative Foundation Indication: A restorative foundation for an Indirect Restoration is indicated as a filler to eliminate undercuts, voids, and other irregularities that have occurred during tooth preparation to create a more favorable tooth form for the retention of an Indirect Restoration.undercuts/voids/irregularities post-preparation

Post and Core Indication: Post and core is indicated for endodontically treated teeth with significant loss of coronal tooth structure in which insufficient tooth structure remains to adequately retain an Indirect Restoration.inadequate remaining tooth structure in endodontically treated tooth

Post is indicated when there is inadequate remaining tooth structure to support a core; post is not indicated for teeth with short roots or when anatomic features (e.g., canals and pulp chamber) can retain the core.

Pin Retention Indication: Pin retention is indicated for teeth with significant loss of coronal tooth structure to allow retention of a direct restoration.significant coronal loss

Not indicated if the tooth cannot be properly restored with a direct restoration due to anatomic or functional considerations or for restoration of teeth with significant malocclusion.

Post Removal Indication: Post removal is indicated for fracture of the tooth and/or post and core; loss of adequate retention; recurrent caries associated with post and core; when the tooth has a reasonable long-term prognosis for a new restoration; or when access is needed to the root canal system for non-surgical endodontics.one of listed clinical scenarios

Not Indicated / Exclusions

Not Indicated Conditions: Core buildup is not indicated as a definitive composite or amalgam restoration, as a filler to correct irregularities in preparation, or for retention of intracoronal restorations; posts are not indicated for teeth with short roots or when anatomic features are available to retain the core (e.g., canals and pulp chamber); pin retention is not indicated if the tooth cannot be properly restored with a direct restoration due to anatomic or functional considerations or for restoration of teeth with significant malocclusion.listed conditions

Explicit exclusions: Core buildup is not indicated when used as a definitive composite or amalgam restoration, as a filler to correct irregularities in preparation, or for retention of intracoronal restorations. Posts are not indicated for teeth with short roots or when anatomic features (for example, canals and the pulp chamber) are adequate to retain the core. Pin retention is not indicated if the tooth cannot be properly restored with a direct restoration due to anatomic or functional considerations or for restoration of teeth with significant malocclusion.

Procedures performed in the listed 'not indicated' circumstances are considered not medically indicated. Examples include core buildup performed as a definitive composite or amalgam restoration, use of a core buildup solely to fill preparation irregularities, placement of posts in teeth with short roots, or use of pin retention when the tooth cannot be properly restored with a direct restoration or presents with significant malocclusion. Such uses do not meet the clinical indications for restorative foundation procedures.

Coding and Code List

Applicable CDT Codesmixed

D2949	Restorative foundation for an indirect restoration.
D2950	Core buildup, including any pins when required.
D2951	Pin retention per tooth, in addition to restoration.
D2952	Post and core in addition to crown, indirectly fabricated.
D2953	Each additional indirectly fabricated post same tooth.
D2954	Prefabricated post and core in addition to crown.
D2955	Post removal.
D2957	Each additional prefabricated post same tooth.
D2999	Unspecified restorative procedure, by report.

Favorable long-term prognosis — guidance

GuidanceProcedures (core buildups, posts/cores, and pins) should be performed on teeth that have an overall favorable long-term prognosis.

PurposeTo restore form and retention when a tooth lacks sufficient remaining coronal structure to support the planned restoration.

Applies toCore buildups, post and core procedures, and pin retention when used as a restorative foundation for indirect restorations.

Provider Actions and Prior Authorization

Prior Authorization

Prior Authorization May Be Required

Prior authorization requirements vary by member plan. Providers must verify benefit coverage and obtain any required prior authorization from the member's specific plan before rendering services.

Verify the member-specific benefit plan document for coverage and prior authorization rules.
Listing of procedure or diagnosis codes does not guarantee coverage or payment; confirm benefits prior to service.
Check for applicable federal or state mandates that may affect coverage.

Note

Member-Specific Plan Governs

Providers should reference the member-specific benefit plan document for final coverage determinations and any applicable mandates. If the member plan conflicts with this policy, the member-specific plan governs.

In event of a conflict, the member-specific benefit plan document governs.
Confirm whether UnitedHealthcare standard, Medicare Advantage, or other plan language applies to the member.

Documentation Required

Provider Reminder

This is a provider-facing highlight: confirm benefits, prior authorization, and plan mandates with the member's plan before providing services.

Background

When a tooth lacks sufficient remaining structure to retain an indirect restoration, a restorative foundation (such as a core buildup, post and core, or pins) may be required to restore form and provide retention. These procedures are intended for teeth with significant coronal structure loss or endodontically treated teeth with inadequate tooth structure and should be performed only when the tooth has an overall favorable long-term prognosis.

Definitions

Core Buildup — definition

TermCore Buildup

DefinitionThe replacement of a portion or the entire crown of a tooth to provide a base for the retention of an indirectly fabricated crown.

ContextUsed when insufficient coronal tooth structure remains to retain an indirect restoration; not indicated as a definitive composite/amalgam restoration or as filler to correct preparation irregularities.

Indirect Restoration — definition

TermIndirect Restoration

DefinitionA restoration fabricated outside the mouth.

ContextIndirect restorations require adequate tooth form or restorative foundations (e.g., core buildup, posts, pins) when tooth structure is insufficient.

Pin — definition

TermPin

DefinitionA small metal rod cemented or driven into dentin to aid in retention of a restoration.

ContextIndicated for teeth with significant coronal structure loss to allow retention of a direct restoration; not indicated when the tooth cannot be properly restored with a direct restoration or for teeth with significant malocclusion.

Post — definition

TermPost

DefinitionRod-like component inserted into a prepared root canal space to provide structural support; may be alloy, carbon fiber, or fiberglass and is usually secured with luting agents.

ContextUsed in endodontically treated teeth with inadequate remaining coronal structure to retain an indirect restoration; indicated when there is inadequate tooth structure to support a core.