D4283 is the CDT code for each additional contiguous tooth, implant, or edentulous tooth position treated in an autogenous connective tissue graft, billed with D4273 for the first position, with donor and recipient surgical sites included.
Count by position within the graft, not by quadrant and not by surgery. A palatal connective tissue graft tunneled across three adjacent teeth is one D4273 and two D4283 lines, a pattern offices used to quadrant-based perio codes routinely compress into a single line, leaving the additional positions unbilled, or expand into multiple D4273s, which overstates the case and draws review.
What D4283 covers
D4283 reports each additional contiguous tooth, implant, or edentulous tooth position treated in an autogenous connective tissue graft. The parent line, D4273, carries the first position and the graft’s structural overhead, the palatal harvest and the recipient-site surgery. D4283 prices the incremental recipient work as the same graft extends to each neighboring position.
One harvest, one continuous graft, position-by-position billing. That is the whole model.
Position counting, done correctly
The count runs on positions within the graft, a unit that has nothing to do with the quadrant arithmetic used elsewhere in periodontics.
- List the span from the operative note. Every tooth, implant, and edentulous tooth position the continuous graft covered.
- First position → D4273. Exactly one, regardless of span length.
- Each additional contiguous position → one D4283. A graft across #5, #6, and #7 is D4273 + D4283 + D4283.
- Contiguity is literal adjacency. An untreated position between grafted areas splits the case into two graft sites, and the second site starts over with its own D4273. Billing across the gap with add-ons misstates the anatomy; billing two D4273s for one continuous graft overstates the surgery.
- Implants and edentulous positions count. A graft running from a tooth across an adjacent implant position picks up a D4283 for the implant position.
The habit that breaks this is quadrant thinking. Codes like D4260 and D4261 count teeth per quadrant, and D4210 works the same way, so perio-heavy offices default to “one line per quadrant.” The graft family does not work that way in either direction: a three-position graft in one quadrant is three lines, and quadrant boundaries are irrelevant to contiguity.
The pairing rule
D4283’s parent is D4273 and nothing else. The parallel add-ons, D4285 under the donor-material graft D4275, and D4278 under the free gingival graft D4277, are not interchangeable with it. A D4283 under a D4275 parent asserts palatal harvest work on a claim whose parent says a packaged product was used; a D4283 under a D4277 asserts a subepithelial technique on an epithelialized surface graft. Either contradiction is grounds for a records pull.
The two graft codes outside the add-on system are the pedicle graft D4270, which has no positional structure, and the combined connective tissue and double pedicle graft D4276, reported per tooth.
Common denials
- Missing parent. D4283 without a same-claim D4273, often a posting split across dates. Rebill as a pair.
- Contiguity undocumented. Add-on lines without position identifiers, or a span the note does not support. The narrative should walk the positions in order.
- Deficiency documented at one tooth only. Plans that review mucogingival surgery against measurements can pay the first position and deny the span when charting shows recession and attached-gingiva numbers only at the presenting tooth. Chart every grafted position.
- Single-tooth benefit language. Some group contracts benefit graft procedures on a single-tooth basis, capping multi-position payment by contract rather than by claim quality. Surface it at verification and build the patient estimate on it.
- Frequency window at the site. One perio surgical procedure per site per 36 or 60 months is common contract structure, and the add-on positions inherit the site’s history.
Documentation that supports the claim
- The operative note describing one continuous graft: the palatal harvest once, then placement across each named position.
- Tooth or position numbers on every line, the D4273 and each D4283.
- Recession and attached/keratinized-gingiva measurements at every grafted position, from charting inside the plan’s window, plus the functional rationale for treating the full span.
- Pre-authorization records where available, since add-on allowances and single-tooth-benefit contracts are where estimates go wrong.
What to get right in your PMS
- Template the pair. D4283 requires a same-claim D4273; block it solo and block it under D4275 or D4277 parents.
- Force position identifiers on add-on lines. Reviewers pend unnumbered multiples.
- Keep the harvest out of the fee schedule as a separate item. Donor-site work lives inside the pair on every position.
- Train the graft codes as their own counting system. One line per position, contiguity literal, quadrants irrelevant, the opposite of the osseous and gingivectomy habits the same team uses daily.
FAQs
- When is D4283 billed?
- Whenever an autogenous connective tissue graft, first position billed as D4273, extends across more than one contiguous tooth, implant, or edentulous tooth position in the same graft site. Each additional contiguous position is one D4283 line. It is an add-on: without a D4273 on the claim it has no parent procedure and will be rejected or pended.
- Is a two-tooth connective tissue graft billed as two D4273 lines?
- No. Two D4273 lines describe two separate first positions, which means two independent grafts. One continuous graft over two adjacent teeth is D4273 for the first position plus one D4283 for the second. The distinction matters: doubled first-position lines overstate the surgery, and carriers that read the note re-adjudicate the second line to the add-on allowance or pend the claim.
- Does D4283 include the palatal donor site?
- The donor and recipient surgical sites are included across the code pair, so nothing about the palatal harvest is ever billed separately, on the first position or any additional one. One harvest typically supplies the whole graft. What D4283 prices is the additional recipient-site work at each added position.
- What is the difference between D4283, D4285, and D4278?
- All three are each-additional-contiguous-position add-ons, distinguished by their parent procedure. D4283 pairs with D4273, the autogenous connective tissue graft using the patient's own tissue. D4285 pairs with D4275, the non-autogenous graft using processed donor material. D4278 pairs with D4277, the free gingival graft placed on the surface. The add-on must match the parent's family, because each pair asserts consistent facts about donor source and technique.
- Why did the carrier deny the D4283 lines but pay D4273?
- Common reasons: the additional positions were not documented as contiguous, the charting only showed the mucogingival deficiency at the first tooth, or the plan's contract benefits graft procedures on a single-tooth basis. The first two are fixable with per-position documentation, recession and attached-gingiva measurements at every grafted position, and tooth numbers on every line. The third is contract language to catch at verification, since it caps payment no matter how clean the claim is.
Related codes
Need help billing this code?
We handle D4283 claims daily.
If your team is spending time on denials, narratives, or carrier follow-up for this code, we can take it off your plate. We work inside your PMS and post payments the same week.
CDT codes are maintained by the American Dental Association. This page is an editorial billing guide, not the official ADA code descriptor. Verify current coverage policies with each carrier before submitting claims.