🦷 CDT Code Reference

Plain-language
CDT code lookup.

Search over 200 dental procedure codes by number or keyword. Written in plain English for quick reference at the chair.

Disclaimer: This is an unofficial plain-language reference tool for dental professionals. Descriptions are written by DentiByte and are not the official ADA CDT code descriptions. Always verify codes with your insurance carrier and refer to the official ADA CDT publication for official use.
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Diagnostic

D0100–D0999
CodePlain Language DescriptionNotes
D0120Periodic oral evaluation
Routine check-up for existing patient — teeth, gums, existing restorations
Most common exam code. 2x/year typical.
D0140Limited oral evaluation
Problem-focused exam — specific complaint or emergency visit
Single issue focus. Not a full exam.
D0145Oral evaluation for patient under 3 years
First dental visit for toddlers. Includes caregiver counseling.
Age-specific code.
D0150Comprehensive oral evaluation
Full new patient exam — medical history, full mouth assessment, treatment planning
New patients or after long absence.
D0160Detailed and extensive oral evaluation
Complex cases requiring extra time — systemic conditions, complicated treatment planning
More comprehensive than D0150.
D0170Re-evaluation — limited
Follow-up visit to check on previously treated problem
Post-treatment check.
D0180Comprehensive periodontal evaluation
Full perio assessment — probing, bone levels, risk factors for new or existing patients
6-point probing required.
D0210Full mouth radiographic series
Complete set of periapical and bitewing X-rays — typically 18-21 images
Every 3-5 years typical.
D0220Periapical X-ray — first image
Single tooth root-tip X-ray to check for infection, bone loss, or fracture
Per image billing.
D0230Periapical X-ray — additional image
Each additional periapical X-ray beyond the first in same visit
Use with D0220.
D0240Occlusal X-ray
Wide-view X-ray of upper or lower arch — useful for impactions and fractures
Pediatric and surgical cases.
D0270Bitewing X-ray — single image
One bitewing X-ray showing crowns of upper and lower teeth together
Checks for cavities between teeth.
D0272Bitewing X-rays — two images
Two bitewing X-rays — standard for most routine exams
Most common bitewing set.
D0274Bitewing X-rays — four images
Four bitewing X-rays — posterior and anterior coverage
More complete cavity check.
D0330Panoramic radiographic image
Single wide-view X-ray showing all teeth, jaws, sinuses, and TMJ
Great for impactions, pathology screening.
D03402D cephalometric radiographic image
Side profile X-ray of skull — used primarily for orthodontic treatment planning
Ortho planning standard.
D03502D oral/facial photograph
Clinical photograph for documentation or treatment planning
Before/after documentation.
D0360Cone beam CT — craniofacial
3D X-ray of skull and jaws — detailed imaging for complex cases
CBCT — full head.
D0364Cone beam CT — limited area
3D X-ray focused on a limited area — single tooth or jaw segment
CBCT — focused view.
D0460Pulp vitality test
Testing whether a tooth nerve is alive — using cold, heat, or electric stimulus
Pre-endo diagnostic.
D0470Diagnostic casts
Study models of teeth made from impressions for treatment planning
Pre-prosth or ortho planning.
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Preventive

D1000–D1999
CodePlain Language DescriptionNotes
D1110Adult prophylaxis
Routine teeth cleaning for patients 14 and older — removes plaque, tartar, and stains
2x/year covered by most plans.
D1120Child prophylaxis
Routine teeth cleaning for patients under 14
2x/year covered by most plans.
D1206Topical fluoride varnish
Professional fluoride varnish applied to teeth to prevent cavities
All ages. Very common.
D1208Topical fluoride — excluding varnish
Fluoride gel or foam applied in trays to strengthen teeth
Tray or rinse application.
D1310Nutritional counseling — dental health
Counseling patient on diet and nutrition related to cavity prevention
Diet-caries connection education.
D1320Tobacco counseling
Counseling patient on effects of tobacco on oral health and cessation options
Documentation required.
D1330Oral hygiene instructions
Teaching patient proper brushing, flossing, and home care techniques
Often not covered by insurance.
D1351Sealant — per tooth
Protective coating placed on back teeth to prevent cavities in grooves
Molars and premolars. Common in kids.
D1352Preventive resin restoration
Small resin filling placed in a shallow cavity or deep groove to prevent decay
Conservative cavity treatment.
D1353Sealant repair — per tooth
Repairing or replacing a failed or partially missing sealant
Replacement only.
D1510Space maintainer — fixed unilateral
Fixed appliance on one side to hold space after early loss of a baby tooth
Pediatric. Band and loop type.
D1575Distal shoe space maintainer
Space maintainer that guides eruption of permanent molar when baby tooth lost early
Pre-eruptive 6-year molar guidance.
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Restorative

D2000–D2999
CodePlain Language DescriptionNotes
D2140Amalgam — one surface, primary or permanent
Silver filling on one surface of a tooth
Per surface billing.
D2150Amalgam — two surfaces
Silver filling covering two surfaces of a tooth
Per surface billing.
D2160Amalgam — three surfaces
Silver filling covering three surfaces of a tooth
Per surface billing.
D2161Amalgam — four or more surfaces
Large silver filling covering four or more surfaces
Large restoration.
D2330Resin — one surface, anterior
Tooth-colored filling on one surface of a front tooth
Front teeth only.
D2331Resin — two surfaces, anterior
Tooth-colored filling on two surfaces of a front tooth
Front teeth only.
D2332Resin — three surfaces, anterior
Tooth-colored filling on three surfaces of a front tooth
Front teeth only.
D2335Resin — four or more surfaces or involving incisal angle
Large composite filling on front tooth involving the biting edge
Class IV restoration.
D2390Resin-based composite crown, anterior
Full composite crown on a front tooth — often used for primary teeth
Pediatric anterior crowns common.
D2391Resin — one surface, posterior, primary
Tooth-colored filling on one surface of a baby back tooth
Pediatric posterior.
D2392Resin — two surfaces, posterior, primary
Tooth-colored filling on two surfaces of a baby back tooth
Pediatric posterior.
D2393Resin — three surfaces, posterior, primary
Tooth-colored filling on three surfaces of a baby back tooth
Pediatric posterior.
D2394Resin — four or more surfaces, posterior, primary
Large composite filling on baby back tooth
Pediatric posterior.
D2710Crown — resin-based composite, indirect
Lab-fabricated tooth-colored crown — not metal
Lab-made composite crown.
D2712Crown — ¾ resin-based composite
Partial coverage tooth-colored crown covering most but not all surfaces
Conservative coverage.
D2720Crown — resin with high noble metal
Crown with metal substructure and tooth-colored outer layer
PFM with high noble metal.
D2722Crown — ¾ resin with high noble metal
Partial coverage crown with metal base and resin outer surface
Conservative PFM.
D2740Crown — porcelain/ceramic
All-ceramic crown with no metal — highly esthetic option
Most esthetic. E-max, zirconia.
D2750Crown — porcelain fused to high noble metal
Metal crown with porcelain fused on visible surfaces
PFM — workhorse crown.
D2780Crown — ¾ cast high noble metal
Partial metal crown covering most surfaces except facial
Conservative metal crown.
D2790Crown — full cast high noble metal
All-metal crown — gold or high noble alloy
Gold crown. Very durable.
D2910Recement or re-bond indirect restoration
Re-cementing a crown, onlay, or veneer that has come loose
Recementation visit.
D2920Re-cement or re-bond crown
Re-cementing a full crown that has fallen off
Emergency recementation.
D2930Prefabricated stainless steel crown — primary tooth
Silver cap placed on a baby tooth — common after pulpotomy
SSC — pediatric standard of care.
D2931Prefabricated stainless steel crown — permanent tooth
Temporary or semi-permanent metal crown on adult tooth
Interim restoration.
D2932Prefabricated resin crown
Tooth-colored prefabricated crown — used for esthetics in pediatric cases
Pedo anterior esthetic crown.
D2950Core buildup including any pins
Building up a broken-down tooth with filling material before placing a crown
Pre-crown buildup.
D2951Pin retention per tooth
Placing pins into tooth structure to help retain a large filling
Used with D2950.
D2960Labial veneer — resin laminate, chairside
Direct composite veneer placed on front of tooth in one visit
Chairside veneer.
D2961Labial veneer — resin laminate, laboratory
Lab-made composite veneer bonded to front surface of tooth
Lab veneer.
D2962Labial veneer — porcelain laminate, laboratory
Porcelain veneer — thin ceramic shell bonded to front of tooth
Classic porcelain veneer.
D2971Additional procedures to construct new crown
Extra procedure needed when placing a new crown on a previously crowned tooth
Crown over crown situation.
D2980Crown repair, by report
Repairing a chipped or damaged crown without replacing it
Documentation required.
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Endodontics

D3000–D3999
CodePlain Language DescriptionNotes
D3110Pulp cap — direct
Placing medicated material directly on exposed tooth pulp to promote healing
MTA or calcium hydroxide.
D3120Pulp cap — indirect
Placing medicated material near but not on the pulp to prevent exposure
Near-exposure treatment.
D3220Therapeutic pulpotomy
Removing infected pulp tissue from crown of tooth — leaving root pulp intact
Common in primary teeth.
D3230Pulpal therapy — anterior primary tooth
Root canal therapy on a front baby tooth
Pediatric anterior.
D3240Pulpal therapy — posterior primary tooth
Root canal therapy on a back baby tooth
Pediatric posterior.
D3310Root canal — anterior tooth
Root canal treatment on a front tooth — 1 canal typical
Incisors and canines.
D3320Root canal — premolar
Root canal treatment on a premolar — 1-2 canals typical
Bicuspids.
D3330Root canal — molar
Root canal treatment on a molar — 3-4 canals typical
Most complex RCT.
D3331Root canal — molar, retreatment
Redoing a failed root canal on a molar
Re-treatment code.
D3332Root canal — premolar, retreatment
Redoing a failed root canal on a premolar
Re-treatment code.
D3333Root canal — anterior, retreatment
Redoing a failed root canal on a front tooth
Re-treatment code.
D3346Retreatment of previous root canal — anterior
Non-surgical retreatment of a previously treated front tooth root canal
Non-surgical approach.
D3410Apicoectomy — anterior
Surgical removal of root tip on a front tooth — when RCT alone fails
Surgical endo.
D3421Apicoectomy — premolar, first root
Surgical removal of root tip on premolar
Surgical endo.
D3430Retrograde filling — per root
Filling placed at root tip during apicoectomy surgery
Used with apicoectomy.
D3450Root amputation — per root
Surgical removal of one root of a multi-rooted tooth
Hemisection related.
D3460Endodontic endosseous implant
Metal implant placed through root into bone to stabilize a tooth
Rare procedure.
D3910Surgical procedure for isolation of tooth
Surgical exposure of tooth needed to isolate it for endodontic treatment
Adjunctive endo surgery.
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Periodontics

D4000–D4999
CodePlain Language DescriptionNotes
D4210Gingivectomy or gingivoplasty — per quadrant
Surgical removal or reshaping of gum tissue — per quadrant
4+ teeth per quadrant.
D4211Gingivectomy or gingivoplasty — per tooth
Surgical reshaping of gum around one tooth
1-3 teeth.
D4240Gingival flap — per quadrant
Perio surgery where gum is lifted to access and clean root surfaces and bone
Open flap debridement.
D4241Gingival flap — per tooth
Perio flap surgery on one or two teeth in area
1-3 teeth.
D4260Osseous surgery — per quadrant
Bone reshaping surgery to eliminate pockets and correct bone defects
Osseous recontouring.
D4261Osseous surgery — per tooth
Bone reshaping surgery around one to three teeth
1-3 teeth.
D4270Pedicle soft tissue graft
Moving gum tissue from adjacent area to cover exposed root or recession
Local tissue transfer.
D4273Autogenous connective tissue graft
Taking tissue from roof of mouth and grafting to area of gum recession
Gold standard for recession.
D4274Mesial or distal wedge procedure
Removing wedge of tissue behind last molar or between teeth to reduce pockets
Distal wedge procedure.
D4341Periodontal scaling and root planing — per quadrant
Deep cleaning below gumline to remove tartar and bacteria from root surfaces
SRP — 4+ teeth per quadrant.
D4342Periodontal scaling and root planing — 1-3 teeth per quadrant
Deep cleaning on 1-3 teeth in one area
Localized SRP.
D4346Scaling in presence of generalized moderate or severe gingival inflammation
Therapeutic cleaning for patients with significant gum inflammation — more than a prophy
Between prophy and SRP.
D4355Full mouth debridement
Removing heavy buildup to allow proper periodontal evaluation — not a prophy
Gross debridement first visit.
D4381Localized delivery of antimicrobial agents
Placing antibiotic medication directly into periodontal pocket — Arestin, PerioChip
Per tooth. Adjunct to SRP.
D4910Periodontal maintenance
Ongoing maintenance cleaning for patients who have completed perio treatment
Post-SRP maintenance visits.
D4920Unscheduled dressing change
Replacing surgical dressing between scheduled post-op visits
Post-surgical care.
D4921Gingival irrigation — per quadrant
Flushing periodontal pockets with antimicrobial solution
Adjunctive therapy.
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Prosthodontics

D5000–D6999
CodePlain Language DescriptionNotes
D5110Complete denture — maxillary
Full upper denture replacing all upper teeth
Upper full denture.
D5120Complete denture — mandibular
Full lower denture replacing all lower teeth
Lower full denture.
D5130Immediate denture — maxillary
Upper denture placed immediately after extractions
Day of extraction.
D5140Immediate denture — mandibular
Lower denture placed immediately after extractions
Day of extraction.
D5211Maxillary partial denture — resin base
Removable upper partial denture with plastic base replacing some teeth
Acrylic partial.
D5212Mandibular partial denture — resin base
Removable lower partial denture with plastic base replacing some teeth
Acrylic partial.
D5213Maxillary partial denture — cast metal
Removable upper partial denture with metal framework — more durable
Cast metal framework.
D5214Mandibular partial denture — cast metal
Removable lower partial denture with metal framework
Cast metal framework.
D5410Adjust complete denture — maxillary
Adjusting an upper full denture for fit, comfort, or bite
Post-delivery adjustments.
D5411Adjust complete denture — mandibular
Adjusting a lower full denture for fit, comfort, or bite
Post-delivery adjustments.
D5510Repair broken complete denture base
Repairing a cracked or broken full denture
Denture repair.
D5520Replace missing or broken teeth — complete denture
Adding or replacing a tooth on a full denture
Per tooth replacement.
D5710Rebase complete maxillary denture
Replacing entire denture base while keeping original teeth — upper
Full rebase.
D5750Reline complete maxillary denture — chairside
Adding material to fitting surface of upper denture to improve fit — done in office
Chairside reline.
D5760Reline complete mandibular denture — chairside
Adding material to fitting surface of lower denture to improve fit — done in office
Chairside reline.
D6010Surgical placement of implant body
Placing titanium implant screw into jawbone — first surgical stage
Implant stage 1.
D6040Surgical placement of eposteal implant body
Placing implant that rests on top of bone — for minimal bone patients
Subperiosteal implant.
D6056Prefabricated abutment
Stock connector piece placed on implant to support crown
Standard abutment.
D6057Custom fabricated abutment
Custom-made connector piece for implant — better fit and esthetics
Lab-made abutment.
D6065Implant crown — porcelain fused to high noble metal
PFM crown placed on an implant abutment
Implant-supported PFM.
D6066Implant crown — porcelain fused to base metal
PFM crown on implant with base metal alloy
Implant-supported PFM.
D6067Implant crown — high noble metal
All-metal gold or high noble crown on implant
Metal implant crown.
D6068Implant crown — porcelain/ceramic
All-ceramic crown on implant — most esthetic option
Zirconia or e.max on implant.
D6210Pontic — cast high noble metal
Metal bridge unit replacing missing tooth
Bridge pontic.
D6240Pontic — porcelain fused to high noble metal
PFM bridge unit replacing missing tooth
Most common pontic.
D6245Pontic — porcelain/ceramic
All-ceramic bridge unit replacing missing tooth
Esthetic all-ceramic pontic.
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Oral Surgery

D7000–D7999
CodePlain Language DescriptionNotes
D7110Single tooth extraction — erupted
Simple extraction of a fully erupted tooth — no incision needed
Simple extraction.
D7120Extraction — erupted tooth requiring removal of bone or sectioning
Extraction requiring bone removal or tooth cutting to remove — more complex
Surgical simple extraction.
D7140Extraction — erupted tooth or exposed root
Routine extraction of a loose or easily accessible tooth
Most basic extraction code.
D7210Surgical extraction of erupted tooth
Extraction requiring incision, bone removal, or sectioning of tooth
Surgical extraction.
D7220Removal of impacted tooth — soft tissue
Removing a tooth covered only by gum tissue — partially erupted
Soft tissue impaction.
D7230Removal of impacted tooth — partially bony
Removing a tooth partially covered by bone
Partial bony impaction.
D7240Removal of impacted tooth — completely bony
Removing a tooth completely covered by bone — most complex impaction
Full bony impaction.
D7241Removal of impacted tooth — completely bony with unusual complications
Most complex wisdom tooth removal with additional complications
Most complex impaction.
D7250Removal of residual tooth roots
Removing root tips or fragments left behind from previous extraction
Root tip removal.
D7270Tooth reimplantation — accidental displacement
Replanting a tooth that was knocked out in accident
Avulsion replantation.
D7272Tooth transplantation
Moving a tooth from one socket to another in same patient
Autotransplantation.
D7310Alveoloplasty — per quadrant
Surgical reshaping of jawbone ridge to prepare for denture
Pre-prosthetic surgery.
D7410Excision of benign lesion — up to 1.25cm
Surgical removal of small benign lesion or growth in mouth
Small lesion removal.
D7411Excision of benign lesion — greater than 1.25cm
Surgical removal of larger benign lesion in mouth
Larger lesion removal.
D7440Excision of malignant tumor — up to 1.25cm
Surgical removal of small malignant tumor in mouth
Oral cancer surgery.
D7450Removal of benign odontogenic cyst or tumor
Removing a cyst or benign growth originating from tooth-forming tissue
Up to 1.25cm.
D7460Removal of benign nonodontogenic cyst or tumor
Removing a cyst or benign growth not related to tooth-forming tissue
Up to 1.25cm.
D7510Incision and drainage of abscess — intraoral
Cutting open and draining a dental abscess inside the mouth
I&D procedure.
D7910Suture of recent small wounds
Stitching up a small wound or laceration in the mouth
Up to 5 sutures.
D7960Frenulectomy
Surgical removal of frenum tissue — tongue tie or lip tie release
Frenectomy.
D7971Excision of pericoronal gingiva
Removing gum flap over a partially erupted tooth — operculectomy
Around impacted wisdom tooth.
D7980Sialolithotomy
Surgical removal of salivary gland stone
Salivary stone removal.
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Orthodontics

D8000–D8999
CodePlain Language DescriptionNotes
D8010Limited orthodontic treatment — primary dentition
Limited braces or appliance treatment for young child — baby teeth
Phase I early treatment.
D8020Limited orthodontic treatment — transitional dentition
Limited treatment during mixed dentition — some baby and adult teeth present
Mixed dentition phase.
D8030Limited orthodontic treatment — adolescent dentition
Limited braces or aligner treatment for teenager
Teen limited treatment.
D8040Limited orthodontic treatment — adult dentition
Limited orthodontic treatment for adult — specific teeth or issue
Adult limited treatment.
D8050Interceptive orthodontic treatment — primary dentition
Early intervention treatment in young child to guide jaw and tooth development
Early interceptive.
D8060Interceptive orthodontic treatment — transitional dentition
Early intervention during mixed dentition to correct developing problems
Phase I treatment.
D8070Comprehensive orthodontic treatment — transitional dentition
Full braces treatment during mixed dentition stage
Full treatment mixed dentition.
D8080Comprehensive orthodontic treatment — adolescent dentition
Full braces or aligner treatment for teenager — most common ortho code
Most common teen ortho code.
D8090Comprehensive orthodontic treatment — adult dentition
Full orthodontic treatment for adult patient
Adult comprehensive.
D8210Removable appliance therapy
Treatment using removable orthodontic appliance — retainer, expander, etc.
Removable ortho device.
D8220Fixed appliance therapy
Treatment using fixed orthodontic appliance cemented to teeth
Cemented ortho device.
D8660Pre-orthodontic examination
Orthodontic consultation and records appointment before starting treatment
Ortho records visit.
D8670Periodic orthodontic treatment visit
Routine adjustment visit during active orthodontic treatment
Monthly adjustment visit.
D8680Orthodontic retention
Post-treatment retainer placement and monitoring — upper and lower
Retainer phase.
D8690Orthodontic treatment — case reopening
Restarting orthodontic treatment that was interrupted or needs revision
Reactivation of case.
D8695Removal of fixed orthodontic appliance
Debonding braces at end of treatment
Deband appointment.
D8696Repair of orthodontic appliance — by report
Repairing broken bracket, wire, or other ortho component
Emergency repair visit.
D8697Replacement of lost or broken retainer
Making a new retainer to replace lost or broken one
Retainer replacement.
D8698Re-cement or re-bond fixed retainer
Rebonding a fixed wire retainer that has come loose
Bonded retainer repair.
D8999Unspecified orthodontic procedure
Orthodontic procedure not covered by any other specific code
By report — documentation needed.

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