CDC Periodontal Procedures Coding 2 — Questions and Answers
Question 1: What CDT code is reported for osseous surgery involving four or more teeth per quadrant?
- D4261
- D4240
- D4260 (Correct answer)
- D4270
Correct answer: D4260
D4260 describes osseous surgery (bone reshaping and recontouring) when performed on four or more teeth per quadrant, while D4261 is used for one to three teeth.
Question 2: Which procedure is described by CDT code D4249?
- Pedicle soft tissue graft
- Gingivectomy involving one to three teeth
- Clinical crown lengthening — hard tissue (Correct answer)
- Guided tissue regeneration with resorbable barrier
Correct answer: Clinical crown lengthening — hard tissue
D4249 describes clinical crown lengthening involving hard tissue (bone removal), which is performed to expose sufficient tooth structure for restorative procedures.
Question 3: Which CDT code is used to report a free soft tissue graft procedure for the first tooth or edentulous area?
- D4270
- D4273
- D4271 (Correct answer)
- D4274
Correct answer: D4271
D4271 is used for a free soft tissue graft (harvested and completely detached from the donor site) for the first tooth, implant, or edentulous area treated.
Question 4: What CDT code describes the localized delivery of antimicrobial agents into periodontal pockets as an adjunct to scaling and root planing?
- D4341
- D4910
- D4381 (Correct answer)
- D4355
Correct answer: D4381
D4381 is the code for localized delivery of antimicrobial agents (such as chlorhexidine chip or doxycycline gel) into periodontal pockets as an adjunct to SRP.
Question 5: What does CDT code D4211 describe?
- Gingivectomy or gingivoplasty involving four or more teeth per quadrant (Correct answer)
- Osseous surgery for one to three teeth per quadrant
- Crown lengthening — soft tissue only
- Provisional extracoronal splinting
Correct answer: Gingivectomy or gingivoplasty involving four or more teeth per quadrant
D4211 is used for gingivectomy or gingivoplasty when performed on four or more teeth per quadrant; D4212 is used when one to three teeth are involved.
Question 6: Which CDT code describes guided tissue regeneration using a resorbable barrier membrane?
- D4267
- D4260
- D4268
- D4266 (Correct answer)
Correct answer: D4266
D4266 is used for guided tissue regeneration with a resorbable barrier, while D4267 is used when a non-resorbable barrier is placed and requires subsequent removal.
Question 7: Which CDT code is appropriate for reporting provisional intracoronal splinting of periodontally involved teeth?
- D4321
- D4320 (Correct answer)
- D4249
- D4274
Correct answer: D4320
D4320 is used for provisional intracoronal splinting, where stabilization involves preparation within the tooth structure, as opposed to D4321 which is extracoronal.
CDC Periodontal Procedures Coding 2
What CDT code is reported for osseous surgery involving four or more teeth per quadrant?