D3110 is the CDT code for a direct pulp cap procedure, excluding the final restoration. It covers the placement of a biocompatible medicament directly over an exposed or near-exposed dental pulp with the goal of preserving pulp vitality and avoiding root canal therapy. The restorative code is billed separately.
Last updated June 2026 ยท Reviewed by the PracticeAlpha billing team
Get help with D3110 claims →Use D3110 when the pulp has been mechanically or accidentally exposed during a caries removal or cavity preparation, and the pulp tissue appears healthy and vital. The procedure involves controlling hemorrhage, placing a biocompatible capping agent (such as mineral trioxide aggregate or calcium hydroxide), and sealing the site. The goal is to stimulate secondary dentin formation and preserve the tooth without root canal therapy.
Common clinical scenarios: Mechanical exposure during caries excavation on a tooth with a vital pulp. Accidental exposure during cavity prep on a young permanent tooth. Patient presenting with deep decay where pulp exposure occurs and the tooth shows no signs of irreversible pulpitis. The pulp is bleeding in a controlled manner and the tissue appears healthy.
Do NOT use D3110 for: Indirect pulp caps where no exposure occurred (use D3120). Therapeutic pulpotomy removing coronal pulp tissue (use D3220). Cases where the pulp is necrotic or symptomatic irreversible pulpitis is present (root canal therapy is indicated, not a pulp cap). Pulpotomies on primary teeth (use D3230 or D3240).
Some dental plans do not cover pulp caps at all, or classify them as investigational. This is a plan-level decision unrelated to clinical appropriateness. Verify coverage before treatment. If non-covered, inform the patient of their out-of-pocket responsibility upfront.
Simply noting "pulp exposure" is not enough. The clinical note should describe the size and nature of the exposure, the pulp tissue appearance (bleeding, color), the medicament used, the reason pulp vitality is believed preserved, and the prognosis. Missing any of these elements gives the payer grounds to deny.
A periapical radiograph showing the tooth condition is standard supporting documentation. If the x-ray does not clearly show deep caries or the preparation extending near the pulp, the payer may question whether the procedure was necessary.
D3110 excludes the final restoration by definition. If the restoration is not billed separately, the claim may be denied or the payment may be lower than expected. Always include the appropriate restorative code (composite, amalgam, or buildup) on the same claim or on the date the restoration is placed.
X-ray showing the depth of the carious lesion or preparation in relation to the pulp chamber. Supports the clinical finding of exposure or near-exposure and documents pre-operative tooth condition.
Describe the nature of the pulp exposure (mechanical vs. carious), pulp tissue appearance, presence and control of hemorrhage, and the basis for concluding pulp vitality is maintained. Specify the capping agent used.
Record the specific material used for the pulp cap (MTA, calcium hydroxide, biodentine, etc.). Some payers may reference the material when evaluating the claim, and it establishes a clear treatment record for future providers.
D3110 does not include the restoration. Bill the appropriate restorative code alongside D3110 for the same tooth. Note the restoration type and surface in clinical records to match the billed code.
Document the expected outcome and the follow-up plan for monitoring pulp vitality. This demonstrates medical necessity and supports the conservative approach taken instead of proceeding directly to root canal therapy.
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Learn about our billing servicesD3110 is the CDT code for a direct pulp cap procedure. It describes the placement of a biocompatible medicament directly over an exposed or near-exposed dental pulp to encourage healing and preserve vitality, excluding the final restoration.
D3110 is for a direct pulp cap where pulp exposure has occurred. D3120 is for an indirect pulp cap where a thin layer of dentin remains over the pulp and no exposure occurred. The clinical distinction must be documented clearly.
No. D3110 explicitly excludes the final restoration. Bill the appropriate restorative code (composite, amalgam, or other) separately on the same claim or on the date the restoration is placed.
Common reasons: plan does not cover pulp caps, insufficient clinical documentation of the exposure and pulp condition, missing radiograph, or failure to bill the restorative code separately alongside D3110.
Yes. D3110 and the corresponding restorative code can be billed together when the restoration is placed at the same visit. Both codes need to appear on the claim with supporting documentation.
D3110 places a capping agent over an exposed pulp to preserve vitality. D3220 removes the entire coronal pulp as a therapeutic measure. D3220 is a more extensive procedure typically used in primary teeth or as an emergency treatment before definitive root canal therapy.
Search all 206 CDT codes in our dental coding guide.