CDT code library.

A working reference for the CDT codes you use every week. Each page covers what the code includes, how to bill it, what documentation payers expect, and the denials it draws.

• D0120Routine recall exam for a patient of recordDiagnostic
• D0140Focused exam limited to the one problem the patient came in forDiagnostic
• D0145Under-three child's exam, combined with counseling for the caregiverDiagnostic
• D0150Full baseline workup on a first visit or when a patient's status has changedDiagnostic
• D0160In-depth problem-focused evaluation of a complex condition, submitted with a narrativeDiagnostic
• D0170Limited problem-focused re-evaluation of an established patient, separate from post-operative visitsDiagnostic
• D0171Re-evaluation visit to check a patient after a completed procedureDiagnostic
• D0180Full periodontal workup with six-point probing and charting on every toothDiagnostic
• D0210Full-mouth series of intraoral X-rays covering every tooth and the bone around itDiagnostic
• D0220First intraoral periapical film of the visit, showing one whole tooth from crown to root tipDiagnostic
• D0230Each intraoral periapical film after the first, billed once per extra image that visitDiagnostic
• D0240One occlusal X-ray, the wide film the patient bites down on for a top-down view of an archDiagnostic
• D0251Extraoral radiographic image capturing the full posterior teeth of both arches in one dedicated exposureDiagnostic
• D0270One bitewing X-ray, a single film capturing the contact areas of the upper and lower back teethDiagnostic
• D0272Two bitewing X-rays, typically one for each side of the mouthDiagnostic
• D0274Four bitewing X-rays, the standard adult set of two films per sideDiagnostic
• D0277Seven to eight vertical bitewings, the taller films read for bone level rather than decayDiagnostic
• D0330Panoramic X-ray of both jaws, one curved exposure taken from outside the mouthDiagnostic
• D0340Flat side-view x-ray of the skull for orthodontic planning, tracing and measurements includedDiagnostic
• D03502D clinical photo of the mouth or face, taken with a camera inside or outside the mouthDiagnostic
• D0364Cone beam CT capture and interpretation, limited field of view (less than one jaw)Diagnostic
• D0365Cone beam CT of one full lower arch, captured and interpreted by the same providerDiagnostic
• D0366Cone beam CT of one full upper arch, captured and interpreted by the same providerDiagnostic
• D0367Cone beam CT capture and interpretation, both jawsDiagnostic
• D0368Cone beam CT of the TMJ, a series of two or more exposures, captured and read by the same providerDiagnostic
• D0391Reading an image someone else captured, and issuing a written reportDiagnostic
• D0460Dental pulp vitality testingDiagnostic
• D0461Diagnostic workup to find out whether a tooth is cracked, billed once per visitDiagnostic
• D0470Stone study models of the teeth poured from an impression for treatment planningDiagnostic
• D1110Routine cleaning for the permanent or mixed dentition, the adult prophyPreventive
• D1120Routine cleaning for the primary or mixed dentition, the child prophyPreventive
• D1206Fluoride varnish painted onto the teeth, the form that keeps releasing for hoursPreventive
• D1208Fluoride gel or foam applied in a tray, any topical fluoride other than varnishPreventive
• D1351Sealant bonded into the pits and grooves of one tooth, billed one tooth at a timePreventive
• D1352Preventive resin restoration, permanent tooth (deleted 2026)Preventive
• D1353Repair of an existing sealant, one toothPreventive
• D1354Medicament applied to arrest an active cavity on one tooth, most often silver diamine fluoridePreventive
• D1355Medicament applied to protect a sound at-risk surface on one tooth, excluding fluoride treatmentsPreventive
• D1510Space maintainer cemented in place to hold a gap on one side of the arch, billed per quadrantPreventive
• D2140Silver amalgam filling restoring one surface of a baby or adult toothRestorative
• D2150Silver amalgam filling restoring two surfaces of a baby or adult toothRestorative
• D2160Silver amalgam filling restoring three surfaces of a baby or adult toothRestorative
• D2161Silver amalgam filling restoring four or more surfaces of a baby or adult toothRestorative
• D2330Tooth-colored composite filling restoring one surface of a front toothRestorative
• D2331Tooth-colored composite filling restoring two surfaces of a front toothRestorative
• D2332Tooth-colored composite filling restoring three surfaces of a front toothRestorative
• D2335Tooth-colored composite filling restoring four or more surfaces of a front toothRestorative
• D2391Tooth-colored composite filling on one surface of a back toothRestorative
• D2392Tooth-colored composite filling on two surfaces of a back toothRestorative
• D2393Tooth-colored composite filling on three surfaces of a back toothRestorative
• D2394Tooth-colored composite filling on four or more surfaces of a back toothRestorative
• D2542Cast-metal onlay restoring two surfaces and covering at least one cuspRestorative
• D2543Cast-metal onlay restoring three surfaces and covering at least one cuspRestorative
• D2544Four-or-more-surface metallic onlay covering at least one cuspRestorative
• D2643Three-surface porcelain or ceramic onlay covering at least one cuspRestorative
• D2644Porcelain or ceramic onlay covering at least one cusp, four or more surfacesRestorative
• D2740All-ceramic crown with no metal underneath, cemented on a natural toothRestorative
• D2750Porcelain crown over a high noble metal substructure, at least 60% noble with 40% goldRestorative
• D2751Porcelain crown over a predominantly base metal substructure, under 25% nobleRestorative
• D2752Porcelain crown over a noble metal substructure, at least 25% nobleRestorative
• D2780Three-quarter cast crown in high noble alloy, partial-coverage with one wall left naturalRestorative
• D2790All-metal cast crown in high noble alloy, at least 60% noble with 40% goldRestorative
• D2791All-metal cast crown in predominantly base alloy, under 25% nobleRestorative
• D2792All-metal cast crown in noble alloy, at least 25% nobleRestorative
• D2794All-metal cast crown made of titanium or a titanium alloyRestorative
• D2910Recementing or rebonding a loose inlay, onlay, veneer, or other partial-coverage restorationRestorative
• D2920Recementing a loose crown back onto its prepared toothRestorative
• D2929Ready-made porcelain or ceramic crown fitted onto a baby tooth chairsideRestorative
• D2930Ready-made stainless steel crown fitted onto a baby tooth chairsideRestorative
• D2940Placement of an interim direct restorationRestorative
• D2949Filling material that blocks out undercuts and shapes a sound tooth so a crown, onlay, or inlay seats cleanlyRestorative
• D2950Rebuilding a broken-down tooth, with pins if needed, so it can hold a crownRestorative
• D2952Custom post and core cast from an impression of the canal to support a crownRestorative
• D2954Stock manufactured post cemented into the canal with the core built up around itRestorative
• D2960Tooth-colored resin veneer sculpted onto the front of a tooth in one chairside visitRestorative
• D2962Porcelain veneer made in a lab and bonded to the front of a toothRestorative
• D2971Extra work to fit a new crown under a partial denture the patient already wearsRestorative
• D2980Fixing a chipped or fractured crown while it stays cemented in the mouthRestorative
• D2991Hydroxyapatite regeneration medicament applied to a single toothRestorative
• D3110Direct pulp cap, a dressing placed straight onto an exposed pulp to keep the tooth aliveEndodontics
• D3120Indirect pulp cap, a dressing placed over a pulp that is close to exposed but still coveredEndodontics
• D3220Pulpotomy that removes the pulp inside the crown and medicates what remains in the rootsEndodontics
• D3221Emergency clean-out of an inflamed pulp to stop pain on a baby or adult (primary or permanent) toothEndodontics
• D3222Partial pulpotomy on an immature permanent tooth to keep the pulp alive so the root can finish formingEndodontics
• D3310Root canal on a front tooth, an incisor or canineEndodontics
• D3320Root canal on a premolar, the tooth between the canine and the molarsEndodontics
• D3330Root canal on a molar, the back tooth that usually has three or more canalsEndodontics
• D3346Redoing a failed root canal on a front toothEndodontics
• D3347Redoing a failed root canal on a premolarEndodontics
• D3348Redoing a failed root canal on a molarEndodontics
• D3410Apicoectomy on an anterior tooth, surgical removal of the root tipEndodontics
• D3421Apicoectomy on one root of a premolar, surgical removal of the root tipEndodontics
• D3425Apicoectomy on one root of a molar, surgical removal of the root tipEndodontics
• D3426Add-on apicoectomy code for each root treated beyond the first at the same surgeryEndodontics
• D3911Intraorifice barrier placed over the canals after obturationEndodontics
• D4210Surgically trimming or reshaping gum tissue on four or more adjacent teeth or tooth gaps in a quadrantPeriodontics
• D4211Surgically trimming or reshaping gum tissue on one to three adjacent teeth or tooth gaps in a quadrantPeriodontics
• D4212Trimming or reshaping gum tissue on a single tooth so a restorative procedure can be completedPeriodontics
• D4230Surgically uncovering the natural crowns of four or more adjacent teeth in a quadrant by removing excess gum and bonePeriodontics
• D4231Surgically uncovering the natural crowns of one to three adjacent teeth in a quadrant by removing excess gum and bonePeriodontics
• D4240Lifting a gum flap to clean the root surfaces of four or more adjacent teeth or tooth gaps in a quadrantPeriodontics
• D4241Lifting a gum flap to clean the root surfaces of one to three adjacent teeth or tooth gaps in a quadrantPeriodontics
• D4249Surgically removing bone around a tooth to expose enough sound structure for a restorationPeriodontics
• D4260Reshaping the bone around four or more adjacent teeth or tooth gaps in a quadrant, flap and closure includedPeriodontics
• D4261Reshaping the bone around one to three adjacent teeth or tooth gaps in a quadrant, flap and closure includedPeriodontics
• D4263Bone replacement graft around a retained natural tooth, first site in a quadrantPeriodontics
• D4264Bone replacement graft around a retained natural tooth, each site after the first in the same quadrantPeriodontics
• D4265Biologic material placed to help gum tissue and bone regenerate at a treated sitePeriodontics
• D4266Placing a resorbable barrier membrane at a periodontal defect around a natural tooth, billed per sitePeriodontics
• D4267Guided tissue regeneration at a natural tooth using a barrier that does not dissolve, per sitePeriodontics
• D4270Pedicle gum graft, where tissue next to the defect is rotated over while staying attached at its basePeriodontics
• D4273Connective tissue gum graft using the patient's own tissue, first tooth, implant, or edentulous sitePeriodontics
• D4275Connective tissue gum graft using processed donor material rather than the patient's own tissue, first tooth or positionPeriodontics
• D4276Combined graft where a connective tissue graft and a double pedicle flap are used together at one tooth, reported per toothPeriodontics
• D4277Free gingival graft, an epithelialized piece of the patient's tissue placed on the surface, first tooth, implant, or edentulous positionPeriodontics
• D4278Free gingival graft add-on, each additional contiguous tooth, implant, or edentulous position in the same graft sitePeriodontics
• D4283Autogenous connective tissue graft add-on, each additional contiguous tooth, implant, or edentulous position in the same graft sitePeriodontics
• D4285Non-autogenous connective tissue graft add-on, each additional contiguous tooth, implant, or edentulous position in the same graft sitePeriodontics
• D4286Removing a barrier membrane that does not dissolve after guided tissue regenerationPeriodontics
• D4341Nonsurgical deep cleaning of the root surfaces below the gumline on four or more teeth in a quadrantPeriodontics
• D4342Nonsurgical deep cleaning of the root surfaces below the gumline on one to three teeth in a quadrantPeriodontics
• D4346Full-mouth cleaning that treats widespread swollen, bleeding gums when no bone has been lostPeriodontics
• D4355Full mouth debridement that clears heavy buildup so a complete periodontal evaluation can be done at a later visitPeriodontics
• D4381Slow-release antimicrobial such as Arestin placed into a gum pocket, billed per toothPeriodontics
• D4910Periodontal maintenancePeriodontics
• D4921Flushing a medicated solution into the gum pockets of a quadrantPeriodontics
• D4999Periodontal procedure with no specific code, described by narrativePeriodontics
• D5110Full upper denture replacing every tooth in the arch, fitted after the ridge has healedProsthodontics, removable
• D5120Full lower denture replacing every tooth in the arch, fitted after the ridge has healedProsthodontics, removable
• D5130Full upper denture delivered the same day the remaining teeth come outProsthodontics, removable
• D5140Full lower denture delivered the same day the remaining teeth come outProsthodontics, removable
• D5211Upper partial denture on an acrylic base, with the clasps, rests and teeth all in the one feeProsthodontics, removable
• D5212Lower partial denture on an acrylic base, with the clasps, rests and teeth all in the one feeProsthodontics, removable
• D5213Upper partial denture on a cast metal framework, with the clasps, rests and teeth all in the one feeProsthodontics, removable
• D5214Lower partial denture on a cast metal framework, with the clasps, rests and teeth all in the one feeProsthodontics, removable
• D5221Upper partial denture on an acrylic base, delivered the same day the failing teeth are extractedProsthodontics, removable
• D5222Lower partial denture on an acrylic base, seated at the same visit the remaining hopeless lower teeth come outProsthodontics, removable
• D5223Upper partial denture built on a cast metal framework with resin saddles, delivered the day the failing teeth are removedProsthodontics, removable
• D5225Upper partial denture on a flexible nylon base, with the clasps, rests and teeth all in the one feeProsthodontics, removable
• D5226Lower partial denture on a flexible nylon base, with the clasps, rests and teeth all in the one feeProsthodontics, removable
• D5227Upper partial denture on a flexible nylon base, delivered the same day the failing teeth are extractedProsthodontics, removable
• D5228Lower partial denture on a flexible nylon base, seated the same day the failing lower teeth are removedProsthodontics, removable
• D5284One-sided removable partial denture made as a single piece of flexible material, billed for each quadrant treatedProsthodontics, removable
• D5511Fixing a cracked or fractured base on a full lower dentureProsthodontics, removable
• D5512Fixing a cracked or fractured base on a full upper dentureProsthodontics, removable
• D5520Putting a lost or broken tooth back on a full denture, charged for each toothProsthodontics, removable
• D5640Replacing a broken tooth on a partial denture, charged for each toothProsthodontics, removable
• D5730Chairside reline of a full upper denture, new fit surface added directly in the mouthProsthodontics, removable
• D5731Chairside reline of a full lower denture, refit done directly in the mouth in one visitProsthodontics, removable
• D5750Relining a full upper denture with the new fit surface processed at the labProsthodontics, removable
• D5820Interim upper partial denture (the flipper) with clasps, rests, and teeth includedProsthodontics, removable
• D5821Interim lower partial denture (the lower flipper or stayplate), clasps and teeth includedProsthodontics, removable
• D6010Placing the implant fixture in the jawbone where a tooth root used to beImplant services
• D6011Uncovering a buried implant at the second surgical visitImplant services
• D6012Placing a temporary implant body that carries a transitional prosthesis until the definitive case is finishedImplant services
• D6013Placing a mini implant, the narrow fixture used to hold a denture steadyImplant services
• D6055Connecting bar that splints implants or abutments together to retain a prosthesisImplant services
• D6056Seating an off-the-shelf connector between the implant and the crownImplant services
• D6057Seating a made-to-order connector between the implant and the crownImplant services
• D6058All-ceramic implant crown that seats on a separate abutment, not on the implant itselfImplant services
• D6059Porcelain-over-metal implant crown on a separate abutment, built on a high noble copingImplant services
• D6065All-ceramic implant crown that attaches straight to the implant, with no separate abutmentImplant services
• D6066Porcelain-over-metal implant crown that attaches straight to the implant, built on a high noble copingImplant services
• D6068All-ceramic bridge anchor crown that seats on a separate implant abutment, not on the implant itselfImplant services
• D6080Implant maintenance for a full-arch fixed hybrid prosthesis that is removed and reinsertedImplant services
• D6091Replace the worn part of an implant attachment, per attachmentImplant services
• D6100Surgical removal of an implant body (explantation)Implant services
• D6104Bone graft at the time of implant placementImplant services
• D6107Guided tissue regeneration around a dental implant using a barrier that does not dissolve, per implantImplant services
• D6110Take-out upper denture that snaps onto implants in a jaw with no teeth leftImplant services
• D6111Take-out lower denture that snaps onto implants in a jaw with no teeth leftImplant services
• D6112Implant-supported removable partial denture, upper archImplant services
• D6114Fixed full-arch implant denture, edentulous upper archImplant services
• D6115Full-arch denture fixed to lower-jaw implants, no natural teeth remainingImplant services
• D6190Template that records or guides implant position, reported with a narrativeImplant services
• D6240Replacement tooth in a bridge span, porcelain over a high noble metal baseProsthodontics, fixed
• D6245Replacement tooth in a bridge span, all ceramic with no metal underneathProsthodontics, fixed
• D6280Implant maintenance procedures, full arch removable implant/abutment supported dentureImplant services
• D6740Bridge anchor crown on a natural tooth, all ceramic with no metal underneathProsthodontics, fixed
• D6750Bridge anchor crown on a natural tooth, porcelain over a high noble metal baseProsthodontics, fixed
• D6930Recementing a loose bridge back onto its abutment teethProsthodontics, fixed
• D7111Removing the leftover crown of a baby tooth whose roots have already resorbedOral surgery
• D7140Simple extraction of an erupted tooth or exposed root using only forceps or an elevatorOral surgery
• D7210Surgical extraction of an erupted tooth that needed a flap, bone removal, or sectioning to come outOral surgery
• D7220Impacted tooth covered only by gum tissue, lifted out under a flap with no bone removedOral surgery
• D7230Impacted tooth with part of its crown under bone, removed after cutting bone awayOral surgery
• D7240Impacted tooth with its crown fully encased in bone, removed after cutting through boneOral surgery
• D7241Impacted tooth fully encased in bone, removed with unusual surgical complicationsOral surgery
• D7250Leftover root fragments cut out of the bone after the crown is already goneOral surgery
• D7270Reimplantation and stabilization of an avulsed or displaced toothOral surgery
• D7280Surgical exposure of an unerupted toothOral surgery
• D7310Alveoloplasty done with extractions, four or more teeth or spaces in a quadrantOral surgery
• D7311Alveoloplasty done with extractions, one to three teeth or spaces in a quadrantOral surgery
• D7320Alveoloplasty with no extractions in the quadrant, four or more teeth or spacesOral surgery
• D7321Alveoloplasty with no extractions, one to three teeth or spaces in a quadrantOral surgery
• D7950Bone or cartilage graft that rebuilds the upper or lower jaw ridge, billed by reportOral surgery
• D7951Sinus augmentation with bone or bone substitutes via a lateral open approachOral surgery
• D7952Sinus augmentation via a vertical (crestal) approachOral surgery
• D7953Bone replacement graft for ridge preservation, per siteOral surgery
• D7956Guided tissue regeneration at an edentulous site, resorbable barrier, per siteOral surgery
• D7957Guided tissue regeneration at an edentulous site using a barrier that does not dissolve, per siteOral surgery
• D7960Single-code frenulectomy (deleted 2021)Oral surgery
• D7961Removal of a lip- or cheek-side frenum (buccal/labial frenectomy)Oral surgery
• D7962Removal of the band of tissue under the tongue (lingual frenectomy)Oral surgery
• D7963Frenum removal with tissue repositioning and flap closure (frenuloplasty)Oral surgery
• D7971Removal of inflamed gum tissue over a partially erupted tooth (operculectomy)Oral surgery
• D8010Limited (narrow-objective) ortho in the primary, baby-teeth dentitionOrthodontics
• D8020Limited (narrow-objective) ortho in the transitional, mixed-teeth dentitionOrthodontics
• D8030Limited (narrow-objective) ortho in the adolescent dentition, before growth finishesOrthodontics
• D8040Limited (narrow-objective) ortho in the adult dentitionOrthodontics
• D8050Interceptive ortho in the primary, baby-teeth dentition (deleted 2022)Orthodontics
• D8060Early-intervention ortho in the transitional, mixed-teeth dentition (deleted 2022)Orthodontics
• D8070Comprehensive orthodontic treatment of the transitional dentitionOrthodontics
• D8080Comprehensive orthodontic treatment of the adolescent dentitionOrthodontics
• D8090Comprehensive orthodontic treatment of the adult dentitionOrthodontics
• D8210Removable appliance therapy to control a harmful oral habitOrthodontics
• D8220Fixed appliance therapy to control a harmful oral habitOrthodontics
• D8660Pre-orthodontic examination to monitor a patient's growth before treatmentOrthodontics
• D8670Periodic orthodontic treatment visit, part of an active treatment contractOrthodontics
• D8680Orthodontic retention: removing the appliances and building and placing the retainerOrthodontics
• D8681Adjusting a removable orthodontic retainer the patient already hasOrthodontics
• D8695Removal of fixed orthodontic appliances for a reason other than finishing treatmentOrthodontics
• D8703Replacement of a lost or broken orthodontic retainer, upper archOrthodontics
• D8704Replacement of a lost or broken orthodontic retainer, lower archOrthodontics
• D8999Unspecified orthodontic procedure, reported by narrativeOrthodontics
• D9110Minor treatment that relieves dental pain without fixing its cause, one report per visitAdjunctive services
• D9120Cutting a bridge apart so a failing section can come out and the rest stays in placeAdjunctive services
• D9128Photobiomodulation light therapy to ease pain and inflammation, first 15 minutes of a sessionAdjunctive services
• D9130Non-invasive physical therapy session for jaw joint dysfunction, reported per sessionAdjunctive services
• D9210Local anesthetic given on its own, with no procedure that visitAdjunctive services
• D9215Local anesthetic given as part of a procedure done the same visitAdjunctive services
• D9222Deep sedation or general anesthesia, first 15 minutesAdjunctive services
• D9223Each 15-minute unit of deep sedation or general anesthesia after the firstAdjunctive services
• D9230Nitrous oxide (laughing gas) used on its own, with no second sedative givenAdjunctive services
• D9239IV moderate (conscious) sedation, first 15-minute incrementAdjunctive services
• D9243IV moderate (conscious) sedation, each additional 15 minutesAdjunctive services
• D9244In-office administration of minimal sedation, single drug, enteralAdjunctive services
• D9245Moderate sedation from medication swallowed or given rectally, rather than injectedAdjunctive services
• D9246Moderate sedation given by a non-IV parenteral route, first 15-minute incrementAdjunctive services
• D9247Moderate sedation by a non-IV injected route, each additional 15 minutesAdjunctive services
• D9248Non-intravenous conscious sedation (deleted 2026)Adjunctive services
• D9310Specialist or second-opinion evaluation reported back to the provider who requested itAdjunctive services
• D9610Single in-office injection of a therapeutic drugAdjunctive services
• D9612Two or more different therapeutic drugs administered at one visitAdjunctive services
• D9613Long-acting pain medication placed into the surgical site, counted by quadrantAdjunctive services
• D9630Medication or dental product handed to the patient at the visit for use at homeAdjunctive services
• D9936Cleaning and checking a patient's existing occlusal guard, counted per applianceAdjunctive services
• D9940Occlusal guard (retired by-report code)Adjunctive services
• D9941Fabrication of a custom athletic mouthguardAdjunctive services
• D9942Fixing a broken night guard or resurfacing one that no longer fitsAdjunctive services
• D9943Adjustment of an occlusal guard the patient already hasAdjunctive services
• D9944Custom hard night guard that covers a full archAdjunctive services
• D9945Custom soft night guard that covers a full archAdjunctive services
• D9946Custom hard night guard that covers only part of an archAdjunctive services
• D9950Bite study performed on models mounted to an articulatorAdjunctive services
• D9951Single-visit bite adjustment at a specific tooth, site, or quadrantAdjunctive services
• D9952Planned multi-visit course of bite therapy reshaping the whole occlusionAdjunctive services
• D9972In-office bleaching or whitening applied to the outside of the teeth, billed one arch at a timeAdjunctive services
• D9973Whitening applied to the outside of a single discolored toothAdjunctive services
• D9974Bleaching agent placed inside the crown of a root-canal-treated tooth to lighten it, per toothAdjunctive services
• D9975Take-home whitening with custom trays and dispensed bleaching materials, billed one arch at a timeAdjunctive services
• D9995Teledentistry delivered live, with the patient's location and the dentist connected in real time by audio and videoAdjunctive services
• D9996Teledentistry delivered asynchronously, where records are captured and sent to a dentist to review laterAdjunctive services

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CDT codes are maintained by the American Dental Association. These pages are editorial billing guides, not official ADA code descriptors.