CurrentColorado Rocky Mountain Health PlansPolicy DCP010.15

Surgical Endodontics – Dental Clinical Policyopen_in_new

Defines indications and non-indications for surgical endodontic procedures (apicoectomy/root end resection, surgical exposure of root surfaces, retrograde filling, root amputation, intentional reimplantation, hemisection) and provides applicable CDT procedure codes and clinical background for UnitedHealthcare dental plans. It is intended to assist interpretation of coverage but member-specific benefits govern final coverage.

Policy Summary

PayerColorado Rocky Mountain Health Plans

PolicySurgical Endodontics – Dental Clinical Policyopen_in_new

Policy CodePolicy DCP010.15

Change TypeRoutine review; no coverage changes

Effective DateMay 1, 2026

Next Review Date

Key ActionDocument the listed clinical indications to support medical necessity and reference the member-specific benefit plan for final coverage determinations.

SourceLink

POLICY UPDATE CHANGES

Routine review; no change to coverage guidelines on 05/01/2026.

11Listed Indications

7Not-indicated / Contraindications

18Referenced CDT Codes

Coverage Summary

This policy (Policy Number DCP010.15, effective May 1, 2026; last reviewed May 1, 2026) addresses coverage interpretation for surgical endodontic procedures including apicoectomy/root end resection, surgical exposure of root surfaces, retrograde filling, root amputation, intentional reimplantation, and hemisection. It is intended to assist UnitedHealthcare dental plans in determining medical necessity, while member-specific benefit plan documents govern final coverage decisions.

The scope defines indications and non-indications for these procedures and provides an applicable CDT procedure code reference list to guide coding and documentation. The policy takes a mixed coverage stance (some procedures may be covered when specified clinical criteria are met and documented; member benefit terms and clinical applicability determine coverage).

Providers are advised to document the clinical indications listed in the policy (for example, failed nonsurgical retreatment, inaccessible apex, persistent periradicular pathosis, marked overextension of obturation, furcation classification, or percentage of remaining bone support) and to reference the member-specific benefit plan before determining coverage.

Key Policy Values

Listed Indications (distinct bullets across procedures)11

Not-indicated / Contraindications (distinct bullets listed)7

Referenced CDT Codes18

Policy numberDCP010.15

StatusCURRENT

Effective date2026-05-01

Last review2026-05-01

Medical Necessity — Procedures and Indications

Apicoectomy (Root End Resection)

Apicoectomy may be indicated for the following:

ANY of the following

Failed retreatment of endodontic therapy
When the apex of tooth cannot be accessed due to calcification or other anomaly
Where visualization of the Periradicular tissues and tooth root is required when perforation or root fracture is suspected
Further diagnosis when post endodontic therapy symptoms persist
A marked over extension of obturating materials interfering with healing

Not indicated when

Unusual bony or root configurations resulting in lack of surgical access
If there is the possible involvement of neurovascular structures
Teeth with a hopeless prognosis

Surgical exposure of root surfaces (without apicoectomy)

Surgical exposure of root surfaces may be indicated for the following:

ANY of the following

Failed retreatment of endodontic therapy
When the apex of tooth cannot be accessed due to calcification or other anomaly
When a biopsy of Periradicular tissue is necessary
Where visualization of the Periradicular tissues and tooth root is required when perforation or root fracture is suspected
Further diagnosis when post endodontic therapy symptoms persist

Retrograde Filling

Retrograde Filling is indicated for the following:

ANY of the following

Periradicular pathosis and a blockage of the root canal system that could not be obturated by nonsurgical root canal treatment
Persistent Periradicular pathosis resulting from an inadequate apical seal that cannot be corrected non-surgically
Root perforations
Resorptive defects

Not indicated when

Teeth with an overall poor prognosis

Root Amputation

Root Amputation may be indicated for the following:

ANY of the following

Class III Furcation involvement
Untreatable bony defect (of one root)
Root fracture
Root caries
Root resorption
Persistent sinus tract or recurrent apical pathology

Intentional Reimplantation

Intentional replantation may be indicated when ALL of the following clinical conditions exist:

ALL of the following

Persistent Periradicular pathosis following endodontic treatment
Nonsurgical retreatment is not possible or has an unfavorable prognosis
Periradicular surgery is not possible or involves a high degree of risk to adjacent anatomical structures
The tooth presents a reasonable opportunity for removal without fracture
The tooth has an acceptable periodontal status prior to the replantation procedure

Hemisection of Multirooted Teeth

Hemisection may be indicated for the following:

ANY of the following

Class III or Class IV periodontal Furcation defect
Infrabony defect of one root of a multi-rooted tooth that cannot be successfully treated periodontally
Coronal fracture extending into the Furcation
Vertical root fracture confined to the root to be separated and removed
Carious, resorptive root or perforation defects that are inoperable or cannot be corrected without root removal

Provider Actions & Documentation

Documentation Required

Reference member-specific benefit plan

Before determining coverage, reference the member-specific benefit plan document; that governs in event of conflict with this policy.

Documentation Required

Medical necessity support

Document clinical indications to support medical necessity. Include the specific clinical findings and rationale that match the policy-listed indications or exclusions to justify the requested surgical endodontic procedure.

Failed retreatment of endodontic therapy
Apex inaccessible due to calcification or anomaly
Persistent post‑endodontic symptoms or need for further diagnosis
Marked overextension of obturating materials interfering with healing
Periradicular pathosis (including blockage of canal, inadequate apical seal, perforations, resorptive defects)
Furcation classification (e.g., Class III/IV) and periodontal support percent (e.g., >75% bone supporting remaining root(s))

Billing Rule

Code use advisory

Listing of CDT codes is for reference only and does not guarantee coverage or reimbursement; follow member benefit and other applicable policies.

D3410
D3421
D3425
D3426
D3430
D3450
D3460
D3470
D3471
D3472
D3473
D3501
D3502
D3503
D3910
D3920
D3950
D3999

Applicable CDT Procedure Codes

Applicable CDT Procedure Codes (reference list)mixed

D3410	Apicoectomy - anterior
D3421	Apicoectomy - premolar (first root)
D3425	Apicoectomy - molar (first root)
D3426	Apicoectomy/periradicular surgery (each additional root)
D3430	Retrograde filling - per root
D3450	Root amputation - per root
D3460	Endodontic endosseous implant
D3470	Intentional reimplantation (including necessary splinting)
D3471	Surgical repair of root resorption - anterior
D3472	Surgical repair of root resorption - premolar

1–10 of 18

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Clinical Background, Evidence & Definitions

Surgical endodontic procedures are used when nonsurgical retreatment is unsuccessful or not possible and encompass periradicular surgery, root amputation, hemisection, and related techniques to eliminate pathology and preserve teeth. The policy notes that these procedures are increasingly performed less frequently because dental implants, which have high long-term success, are an accepted alternative for challenging cases.

The available evidence is limited and variable in quality: case series and retrospective cohort studies report mixed long-term outcomes—for example, a selected cohort study reported a 93.3% maintained success rate over 6–10 years in selected surgical endodontic cases, while a 10-year retrospective study of molar root resection reported a 29.8% 10-year survival. Other retrospective comparisons show higher complication rates for hemisected teeth than for implants but acceptable long-term retention in many cases. Overall, the literature supports select procedures in carefully chosen patients but is constrained by study design limitations, heterogeneous case selection, and declining contemporary use.

Study / Label	Finding
Long-term success (Song et al. 2012)	Overall maintained success rate of 93.3% in selected surgical endodontic cases over follow-up (6-10 years) in reported cohort
Root resection 10-year survival (Park et al. 2009)	10-year survival rate of resected molar teeth reported as 29.8% in retrospective study

Term	Definition
Biologic Materials	Agents that alter wound healing or host-tumor interaction; include cytokines, growth factor, vaccines; not hard or soft tissue graft material.
Furcation	Anatomic area of a multirooted tooth where the roots diverge; furcation involvement refers to loss of periodontal support in a furcation.
Guided Tissue Regeneration	Procedure aiming to achieve new bone, cementum, and PDL attachment using barrier devices or membranes.
Hemisection (Biscuspidization)	Surgical separation of a multirooted tooth through the furcation so that a root and associated crown portion may be removed or retained.
Periradicular	Surrounding the root.
Retrograde Filling	Sealing the root canal by preparing and filling it from the root apex.
Root End Resection/Apicoectomy	Surgical removal of the apical portion of a root and adherent soft tissues.

Revision History

2026-05-01revisedLatest

Routine review; no change to coverage guidelines on 05/01/2026. Archived previous policy version DCP010.14

Policy Summary

PayerColorado Rocky Mountain Health Plans

PolicySurgical Endodontics – Dental Clinical Policyopen_in_new

Policy CodePolicy DCP010.15

Change TypeRoutine review; no coverage changes

Effective DateMay 1, 2026

Next Review Date

Key ActionDocument the listed clinical indications to support medical necessity and reference the member-specific benefit plan for final coverage determinations.

SourceLink

On This Page

A marked overextension of obturating materials interfering with healing

Not indicated when

Unusual bony or root configurations resulting in lack of surgical access
If there is the possible involvement of neurovascular structures
Teeth with a hopeless prognosis

When there is greater than 75% bone supporting remaining root(s)

The tooth has had successful endodontic treatment

Not indicated when

Teeth with an overall poor prognosis with or without Root Amputation

The tooth has had successful endodontic treatment