D4210 is the CDT code for a gingivectomy or gingivoplasty on four or more contiguous teeth or tooth-bounded spaces in one quadrant — soft-tissue-only periodontal surgery that removes or reshapes gum tissue, with no bone touched.
The dentist removes or reshapes gum tissue to eliminate suprabony pockets, reduce overgrown tissue, or restore gingival contour. The code gets miscoded two ways. First, the count: D4210 is four or more teeth in a quadrant, D4211 is one to three, and the wrong count is the fastest route to a denial or an underpayment. Second, the boundary: gingivectomy is not osseous surgery and is not crown lengthening, even though all three reshape the area around a tooth.
What D4210 covers
D4210 reports a gingivectomy or gingivoplasty on four or more contiguous teeth, or tooth-bounded spaces, within a single quadrant. It is periodontal soft-tissue surgery. The dentist removes excess or diseased gum tissue (gingivectomy) or reshapes the gingival contour (gingivoplasty) to eliminate suprabony pockets, reduce overgrown tissue, or restore healthier gum architecture. The code covers the surgical work in that quadrant: the tissue removal or recontouring and the immediate site management.
Two facts define the code and separate it from its neighbors:
- It is scoped by count and quadrant. Four or more contiguous teeth or tooth-bounded spaces in one quadrant. Fewer than that is D4211.
- It is soft tissue only. No bone is removed. The moment the procedure involves reshaping bone, it is osseous surgery, not gingivectomy.
A tooth-bounded space, an edentulous gap with a natural tooth on each side, counts toward the total the same way a tooth does. So a quadrant with three teeth and one bounded space treated reaches the four-site threshold for D4210.
The count axis: D4210 vs D4211
This is where the code gets miscoded most often. D4210 and D4211 are the same procedure. What separates them is how many contiguous teeth or tooth-bounded spaces in the quadrant were treated.
- D4210: four or more contiguous teeth or tooth-bounded spaces per quadrant.
- D4211: one to three contiguous teeth or tooth-bounded spaces per quadrant.
If you treat sites in more than one quadrant, each quadrant is coded on its own. A patient treated in two quadrants, four sites in one and two in the other, generates a D4210 for the first quadrant and a D4211 for the second, each reported with its quadrant.
What D4210 is not
The procedures around a tooth look similar, so D4210 gets confused with three neighbors. Separate them by what tissue is involved and why.
- Osseous surgery (D4260 / D4261). Osseous surgery elevates a full-thickness flap and reshapes the underlying bone. D4210 does not touch bone. If the bone was recontoured, the procedure is D4260 (four or more teeth) or D4261 (one to three teeth), not gingivectomy. This is the distinction that costs the most when it’s wrong: the two sit near each other on a fee schedule and pay at different rates.
- Clinical crown lengthening, hard tissue (D4249). D4249 reshapes bone to expose more sound tooth structure for a restoration. It involves bone and usually a healing period before the crown is prepped. D4210 is soft tissue done for periodontal reasons, not to set up a specific restoration.
- Gingivectomy for restorative access, per tooth (D4212). D4212 is also soft-tissue gingivectomy, but it is reported per tooth and only when the purpose is to access a single tooth for a restoration, such as exposing a crown margin. It is scoped per tooth, not per quadrant, and it is frequently not separately payable when the same dentist preps the restoration. If the gingivectomy is periodontal treatment across a quadrant, it’s D4210 or D4211; if it’s removing tissue to reach one tooth for a filling or crown, it’s D4212.
When to bill D4210
Bill D4210 when the dentist performs a soft-tissue gingivectomy or gingivoplasty on four or more contiguous teeth or tooth-bounded spaces in a single quadrant. Common clinical situations:
- Suprabony periodontal pockets across a quadrant that did not resolve with non-surgical therapy, where removing the pocket wall improves access for the patient to clean.
- Gingival enlargement or hyperplasia (for example, drug-influenced overgrowth) that needs to be reduced across several adjacent teeth.
- Recontouring irregular gingival architecture across a quadrant to restore a maintainable form.
Do not bill D4210 for:
- One to three teeth in a quadrant. Use D4211.
- Any procedure that reshaped bone. Use D4260 or D4261.
- Removing tissue to access a single tooth for a restoration. Use D4212 (per tooth).
- Crown lengthening that involved bone removal. Use D4249.
- Purely cosmetic gum reshaping with no periodontal indication, which most plans exclude regardless of how it’s coded.
Sequencing: non-surgical therapy comes first
Most plans, and most clinical guidelines, expect non-surgical periodontal therapy before surgical treatment. Scaling and root planing, D4341 (four or more teeth per quadrant) and D4342 (one to three teeth per quadrant), is the non-surgical phase. It is therapeutic, not the same as a routine prophylaxis, and it is typically completed and re-evaluated before a surgical code like D4210 is appropriate.
The practical consequence for billing:
- D4341 or D4342 and D4210 on the same quadrant on the same date will usually bundle or deny. Surgery is not billed concurrently with the non-surgical therapy it’s supposed to follow.
- The expected sequence is SRP, then a re-evaluation (a re-eval visit, or periodontal maintenance D4910 once the patient is in maintenance), then gingivectomy on the sites that didn’t respond.
- Document the non-surgical phase. A D4210 claim is stronger when the chart shows SRP was done, the tissue was re-evaluated, and surgery was indicated for residual pockets or persistent tissue overgrowth.
The documentation that gets D4210 paid
Carriers that cover gingivectomy treat it as a medical-necessity procedure, not an automatic benefit. The claim is stronger when it carries these.
- A current periodontal chart. Pocket depths per tooth, ideally before and (where available) after the non-surgical phase, showing the residual pockets that justify surgery. This is the single most important attachment.
- A diagnosis. Periodontal disease, gingival enlargement or hyperplasia, or another periodontal indication. “Cosmetic” framing gets the claim excluded on most plans.
- Current radiographs. Many plans want recent films to confirm the periodontal picture and, by their absence of bone defects requiring surgery, support that this was a soft-tissue procedure.
- The count and quadrant, stated clearly. Which quadrant, and the four-or-more contiguous teeth or tooth-bounded spaces treated. This is what supports D4210 over D4211.
- A short narrative. One or two sentences naming the indication, the non-surgical therapy that preceded it, and that the procedure was soft-tissue gingivectomy or gingivoplasty without bone removal.
Coverage reality: plan-dependent
Whether and how D4210 pays varies by plan. Some patterns to expect, none of them universal:
- Medical-necessity plans. The plan covers gingivectomy with a documented periodontal diagnosis, perio charting, and radiographs. Without that documentation the claim denies for missing necessity.
- Frequency limits per quadrant. Many plans limit periodontal surgery on a given quadrant to once within a defined window. A repeat D4210 on the same quadrant inside that window denies for frequency.
- Cosmetic exclusions. Gingivectomy done for esthetic gum reshaping, with no periodontal indication, is excluded on most plans. The code doesn’t change that; the indication does.
- Bundling with restorative access. When the gingivectomy is performed only to access a tooth for a restoration by the same dentist, plans often treat it as inclusive (the per-tooth D4212 situation) and won’t pay it separately.
Because the variation is wide, verify the specific plan before the surgery when the patient asks about cost, and set the out-of-pocket expectation against that plan’s actual rules, not a general assumption.
Example case
A 58-year-old patient completed scaling and root planing in the lower left quadrant (D4341) three months ago. At the periodontal re-evaluation, the chart shows residual suprabony pockets of 5 to 6 mm on teeth #18, #19, #20, and #21, with tissue overgrowth that the patient can’t clean around. Radiographs show no bone defects requiring osseous surgery.
The periodontist performs a soft-tissue gingivectomy across those four contiguous teeth in the lower left quadrant to eliminate the pocket walls and recontour the gingiva. No bone is removed.
Billing for the visit:
- D4210 (gingivectomy/gingivoplasty, four or more contiguous teeth per quadrant), reported on the lower left quadrant for teeth #18 through #21.
- Attach the periodontal chart showing the residual pocket depths, the diagnosis, and recent radiographs.
- A one-line narrative: “Soft-tissue gingivectomy, lower left quadrant, teeth #18 to #21, for residual suprabony pockets after completed SRP and re-evaluation. No osseous involvement.”
Because four contiguous teeth were treated in one quadrant, this is D4210, not D4211. Because no bone was reshaped, it is not D4260. And because the procedure was periodontal treatment across the quadrant rather than access for a single restoration, it is not D4212.
What to get right in your PMS
The exact menus differ across Open Dental, Dentrix, Eaglesoft, Curve, and Carestream, but the setup that prevents problems is the same:
- Keep the gingivectomy codes separated by count. D4210 (four or more) and D4211 (one to three) should be distinct, clearly labeled line items so the count drives the selection. A single fuzzy “gingivectomy” entry is how the count gets miscoded.
- Code by quadrant, and post the quadrant. D4210 is a per-quadrant code. Record the quadrant and the treated teeth so the claim and the chart agree on the count.
- Keep D4210 distinct from D4212, D4249, and the osseous codes. D4212 is per-tooth restorative access, D4249 is hard-tissue crown lengthening, and D4260 / D4261 are osseous surgery. Separate, labeled entries keep the front desk from reaching for the wrong one.
- Attach the perio chart to the claim. If your system stores clinical notes separately from claim attachments, link the periodontal charting and radiographs to the D4210 line so they travel with it.
- Check the non-surgical sequence before posting. Confirm SRP was completed and re-evaluated, and don’t submit D4210 on the same quadrant and date as D4341 or D4342. The bundling denial is avoidable.
FAQs
- What is the dental code for a gingivectomy?
- It depends on how many teeth are involved in the quadrant. D4210 is the gingivectomy or gingivoplasty code for four or more contiguous teeth or tooth-bounded spaces in a single quadrant. D4211 is the same procedure for one to three contiguous teeth or spaces in a quadrant. There's also D4212, a per-tooth gingivectomy performed only to allow access for a restorative procedure. The count and the quadrant drive which code you use, so confirm both from the perio chart before you post.
- What's the difference between D4210 and D4211?
- The number of teeth treated in the quadrant. D4210 is for four or more contiguous teeth or tooth-bounded spaces in one quadrant. D4211 is for one to three. The procedure is otherwise the same: removing or reshaping gum tissue. A tooth-bounded space (an edentulous gap with a tooth on each side) counts toward the total the same way a tooth does. Count the treated sites in the quadrant from the chart, then pick the code. Billing D4210 when only three teeth were treated, or splitting a four-tooth quadrant into D4211 claims, both invite denials.
- Is D4210 the same as osseous surgery?
- No. D4210 is soft-tissue only. The dentist removes or recontours gum tissue to eliminate suprabony pockets or excess tissue, with no bone removal. Osseous surgery, D4260 (four or more teeth) and D4261 (one to three teeth), elevates a flap and reshapes the underlying bone. The two codes look adjacent on a fee schedule but report different procedures. If bone was recontoured, it isn't D4210. Code what was actually done, because a gingivectomy claim with an osseous-surgery narrative, or the reverse, gives a reviewer a reason to deny.
- Does insurance cover D4210?
- It depends on the plan and the documentation. Plans that cover gingivectomy generally want evidence of medical necessity: a periodontal chart showing pocket depths, a diagnosis such as periodontal disease or gingival enlargement, and often current radiographs. Gingivectomy done purely for cosmetic gum reshaping is usually excluded. Many plans also apply a frequency limit per quadrant and will not pay D4210 separately when it's performed only to access a tooth for a crown or filling, which is the per-tooth D4212 situation. Verify the specific plan and submit the perio chart with the claim.
- Can I bill D4210 in the same quadrant as scaling and root planing?
- Not usually on the same date, and often not within a plan's defined window. Scaling and root planing (D4341 for four or more teeth, D4342 for one to three) is non-surgical periodontal therapy, and most plans expect it to be completed and re-evaluated before surgical treatment like gingivectomy. Billing D4341 and D4210 on the same quadrant the same day commonly bundles or denies. The typical sequence is SRP first, a re-evaluation (often D4910 periodontal maintenance or a re-eval visit), then surgery on the sites that didn't resolve. Follow the plan's sequencing rules and document the non-surgical phase.
- How is D4210 different from crown lengthening?
- Crown lengthening reshapes tissue to expose more sound tooth structure for a restoration, and the surgical version, D4249, removes bone (hard tissue). D4210 is soft-tissue gingivectomy for periodontal reasons such as suprabony pockets or tissue overgrowth, with no bone removal. There's also D4212, a per-tooth soft-tissue gingivectomy done specifically to access a tooth for a restoration. The distinction matters: D4249 involves bone and usually requires a healing period before the crown prep, while D4212 is the per-tooth access code and is often not separately payable when the same dentist preps the crown.
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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.