K13 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Other diseases of lip and oral mucosa.
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Epithelial disturbances of tongue
Code to identify:
Diseases of lips
Cheek and lip biting
Leukoplakia and other disturbances of oral epithelium, including tongue
Hairy leukoplakia
Granuloma and granuloma-like lesions of oral mucosa
Oral submucous fibrosis
Irritative hyperplasia of oral mucosa
Other and unspecified lesions of oral mucosa
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