D1351Sealant, Per Tooth

What This Code Covers

D1351 covers the application of a dental sealant to the occlusal (chewing) surface of a permanent molar or premolar. The sealant material fills in the pits and fissures on the biting surface to create a smooth, protective barrier that prevents bacteria and food from collecting in those grooves. This is a preventive procedure, billed per tooth, and is most commonly performed on children and adolescents shortly after their permanent molars erupt. The tooth must be unrestored (no existing fillings or crowns on the sealed surface).

Billing Guide

Bill this code when:

• A sealant is placed on the occlusal surface of an unrestored permanent molar or premolar
• The tooth has deep pits and fissures that are at risk for decay
• The tooth has no existing restorations, crowns, or decay on the surface being sealed
• The patient falls within the payer's age range for sealant coverage (commonly under 16 or 18)

Do not bill this code when:

• The tooth already has a restoration (filling, crown, or onlay) on the occlusal surface. The sealant would not be placed on a previously restored tooth
• Caries is present on the surface being treated. If minimal decay is removed and sealant material is placed, use D1352 (preventive resin restoration)
• The tooth is a primary (baby) tooth, unless the payer specifically covers sealants on primary teeth
• The sealant is being reapplied to a tooth that was sealed within the payer's replacement period

Insurance and Denial Prevention

Key Payer Rules:

• Most plans cover sealants only on permanent molars (teeth 2, 3, 14, 15, 18, 19, 30, 31), though some also cover premolars
• Coverage is typically limited to patients under age 16 or 18, depending on the plan
• Payers generally require the tooth to be unrestored with no history of decay on the sealed surface
• Replacement limitations vary. Many plans will not cover a re-seal within two to three years of the original placement
• Medicaid programs in most states cover sealants for children, but eligible teeth and age limits vary by state

Common Denials and How to Respond:

• Tooth already has a restoration - Review the patient's history. If the restoration is on a different surface (e.g., mesial filling but occlusal is unrestored), appeal with documentation and a periapical radiograph showing the occlusal surface is sound.
• Patient exceeds age limit - Verify the payer's age cutoff. If the patient is outside the covered range, inform them of the out-of-pocket cost. Some plans allow exceptions for high-risk patients with a narrative.
• Sealant placed on non-covered tooth - Check which teeth the plan covers. If only molars are covered and you sealed a premolar, the patient may need to pay out of pocket. If molars are covered, resubmit with the correct tooth number.