D4346ADA CDT ProcedurePeriodontics

D4346 - Gingival Scaling

Scaling for generalized moderate/severe inflammation.

Patient-Friendly Summary: This specialized cleaning treats widespread, severe gum inflammation and bleeding when bone loss has not yet occurred. Gentle ultrasonic and polishing instruments remove plaque and tartar above and just below the gumline to restore healthy, firm pink gums.
Clinical Documentation Notes: Full mouth. Limit 2 per period. Two per period total with D1110. Age 18+.
Procedure Code
D4346
Clinical Category
Periodontics
Reference Fee & Claim Types
BOTH

Insurance Verification Benchmarks & Billing Guidelines

Payer policy benchmarks, pre-submission attachment requirements, and denial prevention rules for D4346.

Source: Delta Dental 2026
Frequency Limitation
1 per 12 to 24 months following comprehensive/periodic evaluation (rolling_12_months)

Required Claim Attachments & Pre-Submission Checklist

  • Full-mouth periodontal charting with 6-point probing depths and bleeding points

Bill When (Allowable Clinical Criteria)

  • Indicated for medically and clinically necessary treatment as documented in patient's dental record.

Restrictions & Clinical Exclusions

  • D4346 includes prophylaxis, therefore fees for D1110, D1120 or D4355 are not billable to the patient when submitted with D4346 by the same dentist/dental office.
  • Fees for D4346 are not billable to the patient when submitted with D4910 by the same dentist/dental office.
  • Infection control is included in the fee for the dental services provided. Separate fees are not billable to the patient.
  • For benefit purposes, local anesthesia is an integral part of the periodontal procedures being performed and additional charges are not billable to the patient.
  • Laser disinfection is a technique, not a procedure. Fees for laser disinfection are not billable to the patient.
  • Benefits for laser disinfection as a standalone procedure are denied as investigational.

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 D4346 (29)

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

ICD-10 CodeDiagnosis NameCategoryPrimary JustificationClaim TypeClinical Scenario
K05.312Chronic periodontitis, localized, moderateGingivitis and periodontal diseases★ Yes (Primary)BOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Chronic periodontitis, localized, moderate
A69.1Other Vincent’s infectionsOther spirochetal infectionsSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Other Vincent’s infections
E10.9Type I diabetes mellitus without complicationsDiabetes mellitusSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Type I diabetes mellitus without complications
E11.AType 2 diabetes mellitus without complication in remissionDiabetes mellitusSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Type 2 diabetes mellitus without complication in remission
E11.9Type 2 diabetes mellitus without complicationsDiabetes mellitusSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Type 2 diabetes mellitus without complications
K03.6Deposits [accretions] on teethOther diseases of hard tissues of teethSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Deposits [accretions] on teeth
K05.20Aggressive periodontitis, unspecifiedGingivitis and periodontal diseasesSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Aggressive periodontitis, unspecified
K05.211Aggressive periodontitis, localized, slightGingivitis and periodontal diseasesSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Aggressive periodontitis, localized, slight
K05.212Aggressive periodontitis, localized, moderateGingivitis and periodontal diseasesSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Aggressive periodontitis, localized, moderate
K05.213Aggressive periodontitis, localized, severeGingivitis and periodontal diseasesSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Aggressive periodontitis, localized, severe
K05.219Aggressive periodontitis, localized, unspecified severityGingivitis and periodontal diseasesSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Aggressive periodontitis, localized, unspecified severity
K05.221Aggressive periodontitis, generalized, slightGingivitis and periodontal diseasesSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Aggressive periodontitis, generalized, slight
K05.222Aggressive periodontitis, generalized, moderateGingivitis and periodontal diseasesSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Aggressive periodontitis, generalized, moderate
K05.223Aggressive periodontitis, generalized, severeGingivitis and periodontal diseasesSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Aggressive periodontitis, generalized, severe
K05.229Aggressive periodontitis, generalized, unspecified severityGingivitis and periodontal diseasesSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Aggressive periodontitis, generalized, unspecified severity
K05.30Chronic periodontitis, unspecifiedGingivitis and periodontal diseasesSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Chronic periodontitis, unspecified
K05.311Chronic periodontitis, localized, slightGingivitis and periodontal diseasesSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Chronic periodontitis, localized, slight
K05.313Chronic periodontitis, localized, severeGingivitis and periodontal diseasesSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Chronic periodontitis, localized, severe
K05.319Chronic periodontitis, localized, unspecified severityGingivitis and periodontal diseasesSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Chronic periodontitis, localized, unspecified severity
K05.321Chronic periodontitis, generalized, slightGingivitis and periodontal diseasesSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Chronic periodontitis, generalized, slight
K05.322Chronic periodontitis, generalized, moderateGingivitis and periodontal diseasesSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Chronic periodontitis, generalized, moderate
K05.323Chronic periodontitis, generalized, severeGingivitis and periodontal diseasesSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Chronic periodontitis, generalized, severe
K05.329Chronic periodontitis, generalized, unspecified severityGingivitis and periodontal diseasesSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Chronic periodontitis, generalized, unspecified severity
K05.5Other periodontal diseasesGingivitis and periodontal diseasesSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Other periodontal diseases
K05.6Periodontal disease, unspecifiedGingivitis and periodontal diseasesSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Periodontal disease, unspecified
K06.1Gingival enlargementOther disorders of gingiva and edentulous alveolar ridgeSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Gingival enlargement
Z33.1Pregnant state, incidentalPregnant stateSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Pregnant state, incidental
Z72.0Tobacco UseProblems related to lifestyleSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Tobacco Use
Z87.891Personal history of nicotine dependencePersonal history of certain other diseasesSecondaryBOTHscaling in the presence of generalized moderate or severe gingival inflammation – full mouth, after oral evaluation indicated for Personal history of nicotine dependence

Frequently Asked Questions — D4346 (Gingival Scaling)

Quick answers for dental billers and treatment coordinators submitting claims for D4346.

What ICD-10 diagnosis codes link to dental procedure D4346?▾

Common ICD-10-CM justification codes for CDT D4346 (Gingival Scaling) include: K05.312 - Chronic periodontitis, localized, moderate (Primary); A69.1 - Other Vincent’s infections; E10.9 - Type I diabetes mellitus without complications; E11.A - Type 2 diabetes mellitus without complication in remission; E11.9 - Type 2 diabetes mellitus without complications; K03.6 - Deposits [accretions] on teeth; K05.20 - Aggressive periodontitis, unspecified; K05.211 - Aggressive periodontitis, localized, slight; K05.212 - Aggressive periodontitis, localized, moderate; K05.213 - Aggressive periodontitis, localized, severe; K05.219 - Aggressive periodontitis, localized, unspecified severity; K05.221 - Aggressive periodontitis, generalized, slight; K05.222 - Aggressive periodontitis, generalized, moderate; K05.223 - Aggressive periodontitis, generalized, severe; K05.229 - Aggressive periodontitis, generalized, unspecified severity; K05.30 - Chronic periodontitis, unspecified; K05.311 - Chronic periodontitis, localized, slight; K05.313 - Chronic periodontitis, localized, severe; K05.319 - Chronic periodontitis, localized, unspecified severity; K05.321 - Chronic periodontitis, generalized, slight; K05.322 - Chronic periodontitis, generalized, moderate; K05.323 - Chronic periodontitis, generalized, severe; K05.329 - Chronic periodontitis, generalized, unspecified severity; K05.5 - Other periodontal diseases; K05.6 - Periodontal disease, unspecified; K06.1 - Gingival enlargement; Z33.1 - Pregnant state, incidental; Z72.0 - Tobacco Use; Z87.891 - Personal history of nicotine dependence.

Can CDT code D4346 be billed to medical insurance?▾

Billing CDT D4346 (Gingival Scaling) to medical insurance depends on the underlying clinical necessity and trauma/pathology documentation. Supported claim types across linked diagnoses: BOTH.

What attachments and documentation are required for billing CDT D4346?▾

Required claim attachments for CDT D4346 (Gingival Scaling) include: Full-mouth periodontal charting with 6-point probing depths and bleeding points.

What is the insurance frequency limitation for CDT D4346?▾

Standard commercial insurance frequency for D4346: 1 per 12 to 24 months following comprehensive/periodic evaluation (rolling_12_months).

What are common insurance denial reasons and appeal tips for CDT D4346?▾

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.