- D4263 = bone replacement graft, retained natural tooth, first site in quadrant. Used only with periodontal osseous surgery (D4260/D4261) or gingival flap procedures (D4240/D4241).
- D4264 = bone replacement graft, retained natural tooth, each additional site in quadrant. Always billed as an add-on to D4263, never as a standalone code.
- D7953 = bone replacement graft for ridge preservation, per site. Used at extraction or implant removal sites to preserve alveolar ridge integrity. Not for periodontal grafts around natural teeth.
- The most common error: billing D4263/D4264 for a socket preservation after extraction. The correct code is D7953.
- D4263/D4264 require a concurrent periodontal surgical procedure; D7953 is typically billed with an extraction code (D7140 or D7210).
The CDT manual assigns bone graft codes across four categories of service: endodontics (D3428, D3429), periodontics (D4263, D4264), implant services (D6103, D6104), and oral surgery (D7950–D7953). Each code is context-specific — the same physical graft material placed in a different clinical scenario requires a different code. Automated payer systems check the graft code against the accompanying procedure codes; a mismatch triggers an instant denial before a human reviewer even sees the claim.
D4263 and D4264: periodontal bone grafts
D4263 is billed for the first bone replacement graft site in a quadrant during periodontal surgery on a retained natural tooth. D4264 is billed for each additional graft site in the same quadrant during the same surgical visit. Both codes require that the graft be placed in conjunction with a periodontal surgical procedure — either osseous surgery (D4260 partial, D4261 complete) or a gingival flap procedure (D4240, D4241). Critically, these codes are restricted to natural teeth: the CDT descriptor states "not to be reported for an edentulous space or an extraction site." Submitting D4263 for a socket preservation at the time of an extraction will be denied because automated systems verify that a natural tooth is present at the reported tooth number.
D7953: ridge preservation (socket graft)
D7953 is the bone replacement graft billed when graft material is placed in an extraction or implant removal site at the time of the extraction or removal to preserve ridge integrity. The CDT descriptor specifies clinical indications such as preparation for future implant reconstruction or where alveolar contour is critical to planned prosthetic reconstruction. D7953 is billed per site (one code per extraction socket grafted) and is typically submitted alongside the extraction code (D7140 or D7210). It is not appropriate for periodontal surgery on retained teeth, implant placement grafts (use D6104), or peri-implant defect grafts (use D6103).
Bone graft code selection at a glance
| Code | CDT category | When to use | Billed with |
|---|---|---|---|
| D4263 | Periodontics | First graft site in quadrant during perio surgery on retained natural tooth | D4260, D4261, D4240, or D4241 |
| D4264 | Periodontics | Each additional graft site in same quadrant, same visit as D4263 | D4263 (always an add-on) |
| D7953 | Oral Surgery | Socket preservation at extraction or implant removal site | D7140, D7210, or implant removal code |
| D6104 | Implant Services | Bone graft at time of implant placement | D6010 or another implant placement code |
| D6103 | Implant Services | Bone graft for repair of peri-implant defect | Peri-implantitis treatment codes |
Documentation requirements
If graft denials are already stacking up, denial management services can work the appeals while a dental billing services team fixes the intake process. For D4263/D4264, documentation should include: the periodontal charting with probing depths confirming active periodontitis; the surgical procedure narrative identifying the bony defect location, dimensions, and graft material type (e.g., freeze-dried bone allograft, xenograft, synthetic); and whether a barrier membrane was used (if so, the membrane may be separately billable as D4266 or D4267). For D7953, the narrative should state the extraction tooth number, that the socket was grafted at time of extraction to preserve ridge integrity, the graft material type, and the future prosthetic or implant plan that makes ridge preservation clinically indicated.
Common denials and fixes
| Denial | Cause | Fix |
|---|---|---|
| D4263 denied — no natural tooth at site | Payer sees an extraction at that tooth number; D4263 submitted for socket preservation | Recode to D7953; never use D4263/D4264 at an extraction site |
| D4264 denied as standalone | D4264 submitted without D4263 on the same claim | Add D4263 for the first graft site; D4264 is always an add-on |
| D7953 denied as not medically necessary | No narrative justifying ridge preservation; coverage is plan-specific | Submit a brief narrative: why the site requires preservation, planned implant or prosthetic outcome, and type of graft material |
| D4263 denied — perio surgery not on file | Osseous surgery (D4260/D4261) or flap (D4240/D4241) not billed or recorded | Ensure the periodontal surgical procedure code is on the same claim; without it, D4263 has no qualifying context |
| Non-surgical treatment not attempted first | Carrier requires documentation of prior SRP before covering surgical grafts | Include records of prior D4341/D4342 in the appeal; document the clinical rationale for proceeding to surgery |
Frequently asked questions
D4263 is a periodontal bone replacement graft placed during periodontal surgery on a retained natural tooth. D7953 is a ridge preservation graft placed in an extraction or implant removal socket at the time of tooth removal. The key difference is clinical context: D4263 is for treating periodontal bone loss around a tooth you are keeping; D7953 is for preserving the ridge after a tooth is removed.
No. D4263 specifically states it is "not to be reported for an edentulous space or an extraction site." Socket preservation after extraction is D7953. Using D4263 for a socket graft is a coding error that will be denied once the payer verifies there is no retained natural tooth at that site.
No. D4264 is an add-on code for each additional graft site in the same quadrant beyond the first site. D4263 must always appear on the claim first. A standalone D4264 without D4263 will be denied as an orphan code.
A clinical narrative stating: the tooth number extracted, that bone graft material was placed in the extraction socket at the time of the procedure to preserve alveolar ridge integrity, the graft material type (allograft, xenograft, alloplast), and the planned restorative or implant outcome that makes ridge preservation clinically indicated. Radiographs showing pre-extraction bone anatomy are helpful for appeals.
Most plans cover D4263/D4264 under the periodontal benefit category as major services, usually at 50–80% coinsurance after deductible. Some plans do not cover periodontal bone grafts at all. Coverage depends entirely on the group contract language. Always verify the specific plan's major periodontal benefit before performing surgery-inclusive graft procedures.