D3333ADA CDT ProcedureEndodonticsENDODONTIC THERAPY

D3333 - Internal Root Repair

Internal repair of perforation defects.

Patient-Friendly Summary: A precise repair using biocompatible mineral materials to seal a small internal hole or defect inside the tooth root. This seals out bacteria, stops bone loss, and preserves a tooth that might otherwise require extraction.
Clinical Documentation Notes: Once per tooth per lifetime. Not for iatrogenic perforation. Requires Tooth ID.
Procedure Code
D3333
Clinical Category
Endodontics
Primary ICD-10 Justification
See mapped diagnoses below
Reference Fee & Claim Types
DENTAL

Insurance Verification Benchmarks & Billing Guidelines

Payer policy benchmarks, pre-submission attachment requirements, and denial prevention rules for D3333.

Source: Delta Dental 2026
Frequency Limitation
1 per tooth per lifetime (retreatment eligible after 24 months) (per_tooth_lifetime)

Required Claim Attachments & Pre-Submission Checklist

  • Diagnostic pre-operative radiograph showing affected tooth/area

Bill When (Allowable Clinical Criteria)

  • Internal root repair is only a benefit on permanent teeth with incomplete root development or for repair of a perforation.

Restrictions & Clinical Exclusions

  • Benefits for techniques, e.g. ultrasonic cleaning, or instrumentation are considered to be part of the procedure and not billable to the patient.
  • The fee for a root canal includes treatment, working and final fill radiographic images, and temporary restorations. Fees for radiographic images and temporary restorations in the course of endodontic treatment are not billable to the patient.
  • When radiograph indicates obturation of an endodontically treated tooth has been performed without the use of a solid core material, fees for the endodontic therapy and/or restoration of the tooth are not billable to the patient.
  • A diagnostic film taken to ascertain the presence of pathology is a separate benefit. The initial opening into the canal and routine postoperative visits are considered part of and included in the fee for completed endodontic treatment. Separate fees are not billable to the patient.
  • Incompletely filled root canals are not a benefit. Fees for the endodontic therapy are not billable to the patient.
  • Root canal therapy is not a benefit in conjunction with overdentures(D5863-D5866) and benefits are denied.

Common Claim Denial Codes & Overturn Strategies

Denial CodeDenial ReasonAppeal & Overturn Strategy
CO-119Benefit maximum or frequency limitation exceeded for procedureSubmit clinical narrative detailing extraordinary circumstances, active recurrent pathology, or exception criteria.

ICD-10-CM Justification & Crosswalk Mappings for D3333 (0)

Click any ICD-10-CM diagnosis code below to inspect its reverse procedure mappings and differential coding guide.

No direct ICD-10 mappings recorded for D3333.

Frequently Asked Questions — D3333 (Internal Root Repair)

Quick answers for dental billers and treatment coordinators submitting claims for D3333.

What ICD-10 diagnosis codes link to dental procedure D3333?▾

Currently no specific ICD-10 crosswalk mappings recorded for CDT D3333.

Can CDT code D3333 be billed to medical insurance?▾

Billing CDT D3333 (Internal Root Repair) to medical insurance depends on the underlying clinical necessity and trauma/pathology documentation. Supported claim types across linked diagnoses: DENTAL.

What attachments and documentation are required for billing CDT D3333?▾

Required claim attachments for CDT D3333 (Internal Root Repair) include: Diagnostic pre-operative radiograph showing affected tooth/area.

What is the insurance frequency limitation for CDT D3333?▾

Standard commercial insurance frequency for D3333: 1 per tooth per lifetime (retreatment eligible after 24 months) (per_tooth_lifetime).

What are common insurance denial reasons and appeal tips for CDT D3333?▾

Denial Code CO-119 (Benefit maximum or frequency limitation exceeded for procedure): Overturn appeal strategy - Submit clinical narrative detailing extraordinary circumstances, active recurrent pathology, or exception criteria.