D3432 — Guided tissue regeneration with root surgery
D3432 adds guided tissue regeneration to root surgery, using a barrier so that bone rather than soft tissue fills the defect.
This code belongs to a set of nine covering apicoectomy and periradicular surgery. The clinical detail lives in the apicoectomy and periradicular surgery guide; the code-level detail is here.
This page explains what that code number commits the office to, what it usually costs, how plans treat it, and — the part that causes most of the confusion — how it differs from the codes sitting immediately either side of it.
The nearby codes and how they differ
D3431 — Biologic materials with periradicular surgery: It adds a biologic material — a protein, growth factor or membrane — to root-end surgery to improve how the bone heals.
D3430 — Retrograde (root-end) filling — per root: It is the filling placed into the cut end of the root during apex surgery, sealing the canal from behind, and is billed per root.
D3428 — Bone graft with periradicular surgery (single site): It adds a bone graft to root-end surgery at a single site, filling the defect the infection left behind in the bone.
D3427 — Periradicular surgery without apicoectomy: It is periradicular surgery in which the root tip is not cut off: the lesion is cleared and the area repaired, but the apex is left intact.
D3432 sits in a group of nine codes in total; the remainder are linked at the foot of this page. A plan reads these codes as definitions, not as descriptions. If the notes for the visit do not match D3432 exactly, the claim is assessed as whichever of these the notes do match.
Every code in this group
These codes describe the same broad procedure and differ in one respect each. Each has its own page with its own fee range and coverage notes.
| Code | Procedure |
|---|---|
| D3432 | Guided tissue regeneration with root surgery — this page |
| D3410 | Apicoectomy — anterior tooth |
| D3421 | Apicoectomy — premolar (first root) |
| D3425 | Apicoectomy — molar (first root) |
| D3426 | Apicoectomy — each additional root |
| D3427 | Periradicular surgery without apicoectomy |
| D3428 | Bone graft with periradicular surgery (single site) |
| D3430 | Retrograde (root-end) filling — per root |
| D3431 | Biologic materials with periradicular surgery |
Questions about D3432
What does dental code D3432 mean?
D3432 records guided tissue regeneration with root surgery — one of the endodontics codes.
What is the typical fee for D3432?
Typically $400–$1,100 before insurance, depending on local fees and the complexity of the individual case.
How do dental plans handle D3432?
Yes on most policies, treated as major / surgical work at typically 50–80%. A waiting period on a new policy is the commonest reason it is not.
What is the difference between D3432 and D3431?
D3431 is biologic materials with periradicular surgery: it adds a biologic material — a protein, growth factor or membrane — to root-end surgery to improve how the bone heals. Because they describe different work, D3432 and D3431 can legitimately appear on the same treatment plan — they are not alternatives to choose between.
Also known as: apicoectomy, root end surgery, endodontic surgery, retrograde filling, periradicular surgery.