CDT code · Periodontics
D4346: Scaling in Presence of Generalized Moderate or Severe Gingival Inflammation
Definition
D4346 is the CDT code for a full mouth scaling, after an oral evaluation, for a patient with generalized moderate or severe gum inflammation but no bone loss from periodontitis.
Why it matters for the front desk
D4346 sits between a regular cleaning and a deep cleaning, and it is often unfamiliar to patients. Plans handle it differently: some pay it like a prophylaxis and count it toward the two cleanings a year, while others cover it at a lower percentage. On most plans it isn't billed on the same day as a D1110. Check coverage before the visit so the patient isn't surprised by a cleaning bill.
Related terms
- D4341: Periodontal Scaling and Root Planing, Four or More Teeth per Quadrant D4341 is the CDT code for scaling and root planing (deep cleaning) of four or more teeth with periodontal disease in one quadrant of the mouth.
- D4342: Periodontal Scaling and Root Planing, One to Three Teeth per Quadrant D4342 is the CDT code for scaling and root planing of one to three teeth with periodontal disease in one quadrant.
- D4355: Full Mouth Debridement D4355 is the CDT code for removing heavy plaque and calculus that prevents a comprehensive periodontal evaluation and diagnosis, which then takes place at a later visit.