D1110 Dental Code: Preventive Cleaning for Permanent Teeth

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# D1110 Dental Code: Preventive Cleaning for Permanent Teeth

D1110 is the CDT code for a full-mouth preventive cleaning for a patient with permanent or mixed dentition whose periodontal tissues are generally healthy or have only localized gingivitis. The visit removes plaque, calculus, and stain from teeth and implants to control local irritants. A claim can still pay $0 when the office misses the plan's frequency rule or uses D1110 for a perio-maintenance visit. This guide shows where D1110 fits, the dates payers count, and the chart note that supports the claim.

Bill D1110 after an oral evaluation supports generally healthy gums or localized gingivitis in a patient with permanent or mixed dentition.
Permanent versus primary dentition guides D1110 vs D1120. Both descriptors include mixed dentition, so document the teeth present. Generalized moderate or severe gingivitis points to D4346, while care after active periodontal therapy points to D4910.
Frequency language isn't interchangeable. Minnesota Medicaid allows D1110 twice per calendar year, while one published 2026 Delta Dental California plan states once every six months and also limits the combined cleaning bucket to twice every 12 months.
Check the exam code on a same-day claim. Minnesota Medicaid bars the D0140 problem-focused evaluation with D1110 on the same date, while its D0120 rule doesn't list D1110 as an excluded pair.
In a worked PPO example, a $120 office fee becomes a $90 contracted fee. The plan pays $90 at a 100% preventive benefit, the patient owes $0, and the office posts a $30 contractual adjustment.
Keep the oral evaluation, dentition, periodontal findings, deposits removed, and date of service in the note. An extra Minnesota Medicaid prophy also needs the treatment plan and clinical reason in the record.

What is D1110?

D1110 reports a preventive full-mouth scaling and polishing for permanent or mixed dentition. In the ADA's D4346 coding guide, D1110 fits a generally healthy periodontium where deposits need removal, including patients with localized gingivitis and no attachment or bone loss. The code describes the service delivered. It doesn't promise that a plan will pay every time the service is needed.

Fact	D1110
CDT category	Preventive (D1000 series)
Unit	Full mouth
Dentition	Permanent or mixed dentition; document the teeth present because D1120 also includes mixed dentition
Periodontal condition	Generally healthy, with localized gingivitis if inflammation is present
Typical precursor	An oral evaluation that records the periodontal condition
Public fee reference	$57.75 on Michigan Medicaid's January 2024 schedule

When do you bill D1110?

Bill D1110 when the cleaning controls local irritants and the evaluation doesn't identify generalized moderate or severe gingivitis or a periodontal-maintenance patient. The ADA's coding guide supports these chart findings:

The patient has permanent or mixed dentition. When the dentition is mixed, document why D1110 fits the teeth present.
The periodontium is generally healthy, or gingival inflammation is localized.
The chart doesn't show the generalized moderate or severe inflammation that supports D4346.
The patient isn't in ongoing maintenance after scaling and root planing or periodontal surgery.
The service is a full-mouth scaling and polishing, not quadrant root planing or an enabling debridement before an evaluation.

Difficulty doesn't create a different prophylaxis code. The ADA's 2025 coding guidance says a difficult cleaning stays a prophylaxis unless the documented diagnosis and findings support D4346 or another procedure.

D1110 vs D1120, D4346, and D4910

Choose among these codes from the dentition, today's periodontal findings, and the patient's treatment history. The amount of calculus alone doesn't settle the choice.

D1110 fits preventive care, D4346 treats generalized gingival inflammation without periodontitis, and D4910 follows active periodontal therapy.

	D1120	D1110	D4346	D4910
Deciding fact	Primary or mixed dentition	Permanent or mixed dentition	Generalized moderate or severe gingivitis, no periodontitis	History of active periodontal therapy
Gum and bone findings	Generally healthy or localized gingivitis, no attachment loss	Generally healthy or localized gingivitis, no attachment loss	Widespread inflammation with no attachment or bone loss	Periodontal disease history; site-specific treatment may continue
Unit	Full mouth	Full mouth	Full mouth, once per treatment episode	Full mouth
Public-plan example	A payer may apply its own child age band	Minnesota Medicaid: twice per calendar year	One Delta plan counts D4346 in its combined cleaning limit	Minnesota Medicaid: once every 91 days for 730 days after paid SRP

The ADA's coding FAQ is direct about D1110 vs D1120: the state of the dentition guides the reported procedure, even when a plan uses age to decide the benefit. Report the service delivered, then let the EOB explain any plan age limit.

Localized inflammation can stay D1110. Generalized moderate or severe gingivitis without attachment or bone loss belongs on the D4346 guide. Ongoing care after active periodontal treatment moves to D4910 when its requirements are met.

What does insurance actually do with D1110?

Plans often cover D1110 as preventive care, but the date calculation changes by plan. Minnesota Health Care Programs allows two D1110 services per calendar year and can pay up to two more when the treatment plan and reason are in the record. One published 2026 Delta Dental California plan lists D1110 once every six months and caps D1110, D1120, D4346, and D4910 together at twice every 12 months. Verify the exact last-service date before you promise a free cleaning.

Same-day rules can depend on the evaluation code. Minnesota Medicaid says D0140 and D1110 can't share a date. Its D0120 exclusion list doesn't name D1110. Check both benefit lines because a covered exam doesn't prove the cleaning is eligible.

Here is a clean D1110 EOB example. The percentages are the assumptions for this example, not a universal plan rule.

A $120 D1110 office fee becomes a $90 contracted fee: the plan pays $90, the patient owes $0, and the office writes off $30.

The office fee is $120.
The PPO allowable is $90, which creates a $30 contractual adjustment.
The example plan covers an eligible D1110 at 100% of the allowable, so the plan pays $90.
The patient owes $0 for this eligible visit.

If the $90 allowable falls outside the frequency limit, the plan payment can become $0. The EOB and network contract decide whether the patient owes it or the office writes it off, so read the adjustment reason first. The dental adjustment posting guide shows the line-level math.

Michigan Medicaid listed D1110 at $57.75 in January 2024. That is a dated public rate. Michigan MDHHS posts newer schedules, and FAIR Health Consumer provides local dental cost estimates. Check the current contract before changing the office fee.

Why does D1110 get denied?

D1110 denials usually come from the benefit history or from a chart that supports a different code:

The prior cleaning falls inside the plan's interval, such as a six-month or rolling 12-month limit.
The payer applies an age-based child benefit and adjudicates D1110 at D1120 terms, even though the ADA says dentition determines the reported code.
The chart shows generalized moderate or severe gingivitis, which supports D4346 instead of D1110.
The patient is returning after active periodontal therapy, and the plan expects D4910 when its treatment-history rules are met.
A same-day edit applies. Minnesota Medicaid, for example, doesn't allow D0140 and D1110 on the same date or D1110 with scaling and root planing.

What documentation gets D1110 paid?

Use a short note that proves the preventive service and makes the neighboring codes easy to rule out:

Record the oral evaluation and the periodontal finding: generally healthy tissues or localized gingivitis.
Record the dentition as permanent or mixed. This supports D1110 when a payer's age band points toward D1120.
Record the plaque, calculus, and stain removed and that the service covered the full mouth.
Record any implant surfaces cleaned as part of the visit and the home-care instructions given.
Check the benefit history for D1110, D1120, D4346, and D4910 because some plans count them in one cleaning bucket.
For extra Minnesota Medicaid prophylaxis visits, keep the treatment plan and the clinical reason for the increased frequency in the record.

When a payer changes D1110 to D1120 or denies a supported cleaning under the wrong history, appeal with the dentition, periodontal findings, prior-service dates, and the plan language. The claim-denial appeal guide gives the letter order and attachment list.

Common questions about D1110

Is D1110 based on the patient's age?

No. The ADA says dentition guides D1110 vs D1120, while a plan may use age to calculate its benefit. Both descriptors include mixed dentition, so record the teeth present and the service delivered. Don't change the clinical code only to fit the payer's age rule.

What code should you use for a difficult adult cleaning?

A difficult cleaning doesn't automatically move out of D1110. Generalized moderate or severe gingivitis without periodontitis can support D4346, and bone or attachment loss can support periodontal treatment. Heavy calculus with preventive findings remains D1110. Don't choose the code from appointment length or difficulty alone.

Can a patient receive D1110 after D4346?

Yes. The ADA leaves the return to preventive care to the dentist after reevaluation. The later D1110 must fit the current findings and the plan's frequency. A plan that combines D1110 and D4346 in one limit may deny the prophy even when the code is correct.

How much does D1110 cost?

There isn't one national D1110 fee. Michigan Medicaid listed $57.75 in January 2024, and current Medicaid schedules can change. Commercial fees depend on the office, location, and contract. Use FAIR Health Consumer for a location-based estimate, then compare it with the office's current PPO allowables.

Check the next hygiene schedule

This afternoon, compare each patient's last D1110, D4346, and D4910 date with the exact plan rule before you confirm the next two weeks of hygiene visits. Fix an early date or a wrong recall code while the patient is still easy to reach. Autumn checks claim history and chart support as part of the billing work it runs for your office.

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