What is the D1120 dental code?

It's a child prophylaxis — the routine cleaning for younger patients, usually with primary or mixed teeth, to remove plaque and stain.

What age uses D1120 instead of D1110?

There's no single fixed age in the code; it's based on dentition and clinical judgment, but many insurers apply their own age cutoff for coverage.

How much does a D1120 child cleaning cost?

Often around 50 to 120 USD depending on location and office, typically a little less than an adult cleaning.

How often does insurance cover D1120?

Usually twice a year under preventive benefits, frequently at or near full coverage.

Does D1120 include fluoride?

No. Fluoride (D1206) and sealants are separate preventive procedures with their own codes, even when done at the same visit.

When does my child switch to the adult cleaning code?

It depends on their dentition and the plan's age rules. Your dental office will report the code that matches the patient and the payer's guidance.

D1120 Dental Code: Child Cleaning (Prophylaxis)

Code Summary

D1120 is the CDT code for a child prophylaxis — the routine professional cleaning for younger patients, usually those with primary (baby) or mixed teeth. It removes plaque and stain to keep developing teeth and gums healthy.

What D1120 means

D1120 covers a routine cleaning for a child. "D" is dental, "11" is the prophylaxis group, and "20" is the child version. The procedure is similar in spirit to an adult cleaning — removing plaque and polishing — but is geared to younger patients with primary or transitional dentition.

There's no single hard age cutoff written into the code; the choice between the child cleaning (D1120) and the adult cleaning (D1110) is based on the patient's dentition and the practice's clinical judgment, with many plans applying their own age rules for coverage.

Cleanings for kids are often paired with preventive extras like fluoride (D1206) and sealants, which are coded separately. Building good preventive habits early is the whole point, so these recall visits focus on monitoring development and catching problems early.

When it's typically used

D1120 is reported for children at routine preventive visits, typically those with primary or mixed dentition, commonly twice a year. The transition to the adult code (D1110) depends on dentition and plan rules.

How much does D1120 cost?

A child cleaning is a modest fee, often roughly 50 to 120 USD depending on region and office, usually a bit less than an adult cleaning. Fluoride and sealants are separate charges when provided.

Is D1120 covered by insurance?

Most plans cover child cleanings under preventive care, often fully, limited to twice a year. Many insurers set an age threshold that determines whether the child (D1120) or adult (D1110) cleaning code applies for coverage.

Frequently asked questions

What is the D1120 dental code?: It's a child prophylaxis — the routine cleaning for younger patients, usually with primary or mixed teeth, to remove plaque and stain.
What age uses D1120 instead of D1110?: There's no single fixed age in the code; it's based on dentition and clinical judgment, but many insurers apply their own age cutoff for coverage.
How much does a D1120 child cleaning cost?: Often around 50 to 120 USD depending on location and office, typically a little less than an adult cleaning.
How often does insurance cover D1120?: Usually twice a year under preventive benefits, frequently at or near full coverage.
Does D1120 include fluoride?: No. Fluoride (D1206) and sealants are separate preventive procedures with their own codes, even when done at the same visit.
When does my child switch to the adult cleaning code?: It depends on their dentition and the plan's age rules. Your dental office will report the code that matches the patient and the payer's guidance.

This page is an independent, plain-language explanation for general information only. It is not billing, coding, or clinical advice. For the official CDT descriptor and current-year wording, refer to the American Dental Association.