D3410 is the CDT code for an apicoectomy on an anterior tooth — surgical removal of the root tip (apex) and surrounding infected tissue on a front tooth (incisor or canine), typically when a prior root canal hasn't resolved the infection. It is the surgical, root-end portion of treatment; a separate retrograde filling and any restoration are reported under their own codes.
Informational only — confirm the official CDT descriptor and your payers' rules independently. This is general guidance, not billing, coding, or clinical advice.
When to Use the D3410 Code
Report D3410 when an apicoectomy (root-end resection) is surgically performed on an anterior tooth — usually because persistent periapical infection remains after a root canal and a non-surgical retreatment isn't the chosen path or has failed.
Use the matching code for the tooth type: apicoectomy on a premolar or molar is reported with different surgical codes, and the first root in a surgical site versus each additional root may be coded separately per CDT. D3410 is a surgical procedure, distinct from non-surgical options: an initial root canal on a front tooth is D3310 (endodontic therapy, anterior), and a non-surgical redo is D3346 (retreatment, anterior). A retrograde filling placed during the surgery (D3430) is its own code.
Documentation & Clinical Scenarios
Surgical claims need to show why surgery was chosen and what was done:
- Tooth number and the diagnosis (e.g., persistent apical periodontitis or periapical lesion after prior endodontic treatment).
- The history — that the tooth was previously root-canaled, and why surgery rather than (or after) non-surgical retreatment.
- Pre-operative radiograph(s) showing the periapical pathology, often with a post-op film.
- Procedure detail — the surgical access, root-end resection, and any retrograde filling (reported separately under D3430).
Because surgery often follows other endodontic work, the chart should clearly tie the apicoectomy to the tooth's treatment history and the reason a surgical approach was needed.
Insurance & Billing Tips
- Verify surgical benefits. Confirm coverage for endodontic surgery, the remaining annual maximum, and any waiting period; surgical codes are reviewed closely.
- Code the retrograde filling separately. A retrograde/root-end filling (D3430) placed during the apicoectomy is its own line, not part of D3410.
- Match the tooth type. D3410 is anterior only — premolar and molar apicoectomies have their own codes, and additional roots may be reported separately.
- Document the history. Show the prior root canal and the reason surgery was indicated; without it, the payer may question the claim.
- Expect to appeal. A narrative explaining the persistent infection, plus the pre-op radiograph, supports the claim if it's reviewed or denied.
Example Case
A 38-year-old established patient returns with a recurring gum bump over a front tooth that was root-canaled and crowned years earlier. A periapical radiograph of tooth #7 shows a persistent lesion, and because the existing crown and post make non-surgical retreatment impractical, the dentist elects surgery. An apicoectomy is performed, the root end is resected, and a retrograde filling is placed. The surgery is reported as D3410 with the retrograde filling under its own code (D3430), supported by the history and radiographs. Because the office verified surgical benefits and documented the prior treatment, the claim is supported through review.
On the phone, patients don't say "D3410" — they say a treated front tooth is sore again and they were told they need root-tip surgery. DentalReception AI answers those calls in under two rings, 24/7, captures the symptom, history, and referral in the patient's words, and books the visit live into your schedule — while every clinical and coverage decision routes to your team. See how it handles root canal calls, or book a demo.
Frequently Asked Questions
What's the difference between D3410 and a root canal (D3310) or retreatment (D3346)?
D3410 is a surgical apicoectomy — removing the root tip and infected tissue through the gum — while D3310 is a non-surgical initial root canal on a front tooth and D3346 is a non-surgical retreatment through the crown. Surgery is typically chosen when a tooth still has infection after prior endodontic work and a non-surgical approach isn't practical. Coding a surgical apicoectomy as a root canal, or vice versa, is a significant error.
Does D3410 include the retrograde filling?
Not necessarily. The retrograde (root-end) filling placed during an apicoectomy is commonly reported under its own code, D3430, rather than being included in D3410. Check current CDT guidance and the payer's rules, but in general the surgical apicoectomy and the retrograde filling are separate procedures on separate lines. Bundling them incorrectly can cause part of the claim to be denied.
Does D3410 apply to back teeth?
No. D3410 is specifically the apicoectomy on an anterior tooth (incisor or canine). Apicoectomies on premolars and molars are reported with different surgical codes, and additional roots at the same surgical site may be coded separately per CDT. Using D3410 for a posterior tooth is a coding error, so match the surgical code to the tooth type before submitting the claim.
Does D3410 require a pre-authorization?
Endodontic surgery is reviewed closely, so a pre-treatment estimate or pre-authorization is frequently recommended. Verifying surgical benefits and any waiting period up front, and documenting the prior root canal, the persistent infection, and why surgery was chosen, both reduces the chance of a denial and supports an appeal.
Confirm the current CDT descriptor and your specific payer policies before billing — browse the full dental code library or see our insurance verification feature.