ICD-10-CM > K00-K95 > K00-K14 > K13 > K13.2 > K13.21 K13.21 Leukoplakia of oral mucosa, including tongue Billable/Specific Copy Code Copy Description Applicable To Leukokeratosis of oral mucosaLeukoplakia of gingiva, lips, tongue Type 1 Excludes hairy leukoplakia (K13.3)leukokeratosis nicotina palati (K13.24)