528 Diseases of the oral soft tissues excluding lesions specific for gingiva and tongue 
528.0 Stomatitis and mucositis (ulcerative) 
528.00 Stomatitis and mucositis, unspecified convert 528.00 to ICD-10-CM 528.01 Mucositis (ulcerative) due to antineoplastic therapy convert 528.01 to ICD-10-CM 528.02 Mucositis (ulcerative) due to other drugs convert 528.02 to ICD-10-CM
528.09 Other stomatitis and mucositis (ulcerative) convert 528.09 to ICD-10-CM 528.1 Cancrum oris convert 528.1 to ICD-10-CM 528.2 Oral aphthae convert 528.2 to ICD-10-CM 528.3 Cellulitis and abscess of oral soft tissues convert 528.3 to ICD-10-CM 528.4 Cysts of oral soft tissues convert 528.4 to ICD-10-CM 528.5 Diseases of lips convert 528.5 to ICD-10-CM 528.6 Leukoplakia of oral mucosa, including tongue convert 528.6 to ICD-10-CM 528.7 Other disturbances of oral epithelium including tongue 528.71 Minimal keratinized residual ridge mucosa convert 528.71 to ICD-10-CM 528.72 Excessive keratinized residual ridge mucosa convert 528.72 to ICD-10-CM 528.79 Other disturbances of oral epithelium, including tongue convert 528.79 to ICD-10-CM 528.8 Oral submucosal fibrosis, including of tongue convert 528.8 to ICD-10-CM 528.9 Other and unspecified diseases of the oral soft tissues convert 528.9 to ICD-10-CM