D3427 — Periradicular surgery without apicoectomy
D3427 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.
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.
What follows is the detail behind the number: the conditions the code sets, its typical fee, its usual benefit treatment, and a code-by-code comparison with its closest neighbours.
D3427 against the codes beside it
D3426 — Apicoectomy — each additional root: It is the each-additional line that follows it.
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.
D3425 — Apicoectomy — molar (first root): It is root-end surgery on a molar, billed for the first root treated — the most difficult of the apicoectomies because of the access and the number of roots.
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.
D3427 sits in a group of nine codes in total; the remainder are linked at the foot of this page. There is no penalty for asking which of these is planned, and there is a real cost to finding out from an explanation of benefits weeks later.
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 |
|---|---|
| D3427 | Periradicular surgery without apicoectomy — this page |
| D3410 | Apicoectomy — anterior tooth |
| D3421 | Apicoectomy — premolar (first root) |
| D3425 | Apicoectomy — molar (first root) |
| D3426 | Apicoectomy — each additional root |
| D3428 | Bone graft with periradicular surgery (single site) |
| D3430 | Retrograde (root-end) filling — per root |
| D3431 | Biologic materials with periradicular surgery |
| D3432 | Guided tissue regeneration with root surgery |
Questions about D3427
What procedure is D3427?
Periradicular surgery without apicoectomy, reported under a single endodontics code.
What is the typical fee for D3427?
Most private fees fall in $800–$1,700. Geography accounts for more of that spread than anything clinical.
How do dental plans handle D3427?
Usually yes, as major / surgical treatment at typically 50–80% — but coverage turns on your own policy, its annual maximum and any waiting period.
What is the difference between D3427 and D3426?
D3426 is apicoectomy, each additional root: it is the each-additional line that follows it. Everything else about the appointment is identical, so the record has to show that one detail for D3427 to be the defensible code.
Also known as: apicoectomy, root end surgery, endodontic surgery, retrograde filling, periradicular surgery.