D1110 dental code: prophylaxis adult.

D1110 is for routine adult prophylaxis, the standard dental cleaning. This is the preventive cleaning performed on patients without active periodontal disease. It includes removal of plaque, calculus, and stains from tooth surfaces. Use this code for adult patients (typically 14+) presenting for their regular recall cleaning with healthy or gingivitis-level periodontal status.

Do NOT use D1110 for: Patients with active periodontal disease who have had scaling and root planing (use D4910 for periodontal maintenance). Children under 14 (use D1120). Patients with heavy calculus buildup requiring full mouth debridement before evaluation (use D4355).

Frequency limitation

Most plans cover D1110 twice per year. Some cover three cleanings annually for patients with diabetes or pregnancy. If the patient already had two cleanings this benefit year, the third gets denied unless you can document medical necessity and the plan allows exceptions.

Billed on a perio patient

If the patient has a history of periodontal treatment (SRP), payers expect D4910, not D1110. Billing D1110 on a patient who has had D4341/D4342 in the past triggers reviews. Some payers will deny D1110 and request you rebill as D4910. Others will deny outright.

Same day as SRP

D1110 and D4341/D4342 cannot be billed on the same date of service on the same quadrant. If the patient needs both a cleaning and SRP, they happen on different visits.

Medical necessity for additional D1110 visits

Some patients need more than two cleanings per year. Patients with diabetes, pregnancy, immunocompromising conditions, or high caries risk may benefit from three or four prophylaxis visits annually. Many plans cover a third cleaning with a letter of medical necessity from the patient's physician or dentist documenting the clinical reason. Submit the letter with the claim on the third visit.

The difference between scaling for gingivitis and D1110. D1110 includes removal of plaque, calculus, and stains on patients with healthy or gingivitis-level periodontal status. If the patient has localized heavy deposits but no pocketing or bone loss, D1110 is still appropriate. If there's generalized heavy buildup preventing a proper evaluation, consider D4355 (full mouth debridement) first, then D1110 at a subsequent visit.

Hygiene students and D1110. In most states, dental hygiene students can perform prophylaxis under supervision, but the supervising dentist is the billing provider. The claim goes out under the dentist's NPI. State practice acts determine supervision requirements and who can bill.