ICD-10-CM > K00-K95 > K00-K14 > K02 > K02.6 K02.6 Dental caries on smooth surface Non-Billable/Non-Specific Codes K02.61Dental caries on smooth surface limited to enamelK02.62Dental caries on smooth surface penetrating into dentinK02.63Dental caries on smooth surface penetrating into pulp