Billing Code Overview

CDT code D2160 describes an amalgam restoration involving three surfaces for either primary or permanent teeth. This procedure falls under dentistry services and typically occurs in a dental office (POS 11). The code identifies placement or replacement of an amalgam filling that restores the anatomy of a tooth spanning three surfaces.

Clinical Context

A pediatric or adult patient presents to a dental office with symptomatic or asymptomatic carious lesions on a posterior tooth requiring restoration. After clinical examination and radiographic assessment confirm decay involving three surfaces of a primary or permanent posterior tooth, the dentist administers local anesthesia as needed, removes carious tooth structure, prepares the cavity, and places an amalgam restoration spanning three surfaces. The visit typically occurs in a single dental office appointment (POS 11). Documentation includes tooth number, surfaces restored, anesthesia, materials used (amalgam), treatment time, and any intraoperative findings or complications.

Coding Specifications

• Common Modifiers

• 52 — Reduced Services: Use when the full service as described by CDT code D2160 was partially reduced or not completed, and documentation clearly explains the reduced scope.

• 76 — Repeat Procedure by Same Dentist: Use when the same dentist performs the same procedure (D2160) again on the same tooth during the postoperative period and documentation supports a distinct repeat service.

• Associated Provider Taxonomies

• 1223G0001X — General Practice Dentist: General dental practitioners who provide routine restorative care including amalgam restorations.

• 1223D0001X — Dental Public Health: Dentists specializing in community and public oral health programs; may document and code restorative services in public health settings.

• 1223P0221X — Pediatric Dentist: Specialists in dental care for children; commonly place restorations in primary and young permanent teeth.

• If additional specification is required for billing systems, include modifier and taxonomy codes with claim lines to reflect service scope and provider specialty.

Related Diagnoses

• K02.9 — Dental caries, unspecified

• Relevance: Carious lesions that may require restoration; a common indication for placing an amalgam restoration such as D2160.

• K02.3 — Arrested dental caries

• Relevance: Represents caries that are no longer progressing; clinical judgment documented in the record determines whether restoration like D2160 is indicated.

• K03.81 — Cracked tooth

• Relevance: Structural tooth defects that may necessitate restoration of multiple surfaces; a crack involving multiple surfaces can lead to using D2160.

• K08.8 — Other specified disorders of teeth and supporting structures

• Relevance: Miscellaneous dental conditions affecting tooth integrity that may require multi-surface restorative treatment such as an amalgam three-surface restoration (D2160).

Related Codes

• D2140 — Amalgam - one surface, primary or permanent

• Relation: Represents a smaller restoration scope; used when only a single surface is restored instead of three. It is an alternative code when the clinical procedure involves fewer surfaces.

• D2150 — Amalgam - two surfaces, primary or permanent

• Relation: Represents an intermediate restoration scope between D2140 and D2160; used when two surfaces are involved instead of three.

• D2330 — Resin-based composite - one surface, anterior

• Relation: Different restorative material and tooth location (anterior); not a direct alternative for three-surface posterior amalgam but may be selected when material choice or tooth type differs.

• D2391 — Resin-based composite - one surface, posterior

• Relation: Composite material for posterior teeth for a one-surface restoration; may be used as an alternative restorative material selection for posterior teeth when clinical indications favor resin rather than amalgam.

• Common usage: D2140, D2150, and D2160 are selected based on number of surfaces restored and are mutually exclusive for the same tooth and encounter. Composite codes (D2330, D2391) are alternatives when a resin-based restoration is performed instead of amalgam.

Across national payers, BUCA (average commercial) mean rates at $89.72 sit above Aetna ($63.18) and Cigna Health ($65.96) but below Blue Cross Blue Shield ($122.73) and UnitedHealthcare ($135.36). Medicare values are not provided in the input, so direct numeric comparison with Medicare is not available.

Rate dispersion (P75 minus P25) varies by payer: UnitedHealthcare shows the widest spread (152.00 - 119.67 = 32.33), followed by Blue Cross Blue Shield (144.00 - 87.00 = 57.00) and BUCA (108.00 - 59.00 = 49.00). Aetna (68.00 - 54.00 = 14.00) and Cigna Health (77.00 - 57.00 = 20.00) are tighter. The table and chart below present the full breakdown.