ICD-10-CM K13: Other diseases of lip and oral mucosa

ICD-10-CM Diagnosis Code (2025)

Official Description for K13

Other diseases of lip and oral mucosa

Coding Notes & Guidelines for K13

Includes Notes

epithelial disturbances of tongue

Excludes1: Not Coded Here
  • ariboflavinosis (E53.0)
  • cheilitis due to radiation-related disorders (L55-L59)
  • congenital fistula of lips (Q38.0)
  • congenital hypertrophy of lips (Q18.6)
  • Perlèche due to candidiasis (B37.83)
  • Perlèche due to riboflavin deficiency (E53.0)
Excludes1: Not Coded Here
  • carcinoma in situ of oral epithelium (D00.0-)
  • hairy leukoplakia (K13.3)
Excludes1: Not Coded Here
  • hairy leukoplakia (K13.3)
  • leukokeratosis nicotina palati (K13.24)
Excludes2: Not Included Here
  • certain disorders of gingiva and edentulous alveolar ridge (K05-K06)
  • cysts of oral region (K09.-)
  • diseases of tongue (K14.-)
  • stomatitis and related lesions (K12.-)
Excludes2: Not Included Here

irritative hyperplasia of edentulous ridge [denture hyperplasia] (K06.2)

Use Additional Code
  • code to identify:
  • alcohol abuse and dependence (F10.-)
  • exposure to environmental tobacco smoke (Z77.22)
  • exposure to tobacco smoke in the perinatal period (P96.81)
  • history of tobacco dependence (Z87.891)
  • occupational exposure to environmental tobacco smoke (Z57.31)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)
Inclusion Terms
  • Abscess of lips
  • Angular cheilitis
  • Cellulitis of lips
  • Cheilitis NOS
  • Cheilodynia
  • Cheilosis
  • Exfoliative cheilitis
  • Fistula of lips
  • Glandular cheilitis
  • Hypertrophy of lips
  • Perlèche NEC
Inclusion Terms
  • Leukokeratosis of oral mucosa
  • Leukoplakia of gingiva, lips, tongue
Inclusion Terms

Minimal keratinization of alveolar ridge mucosa

Inclusion Terms

Excessive keratinization of alveolar ridge mucosa

Inclusion Terms

Smoker's palate

Inclusion Terms
  • Erythroplakia of mouth or tongue
  • Focal epithelial hyperplasia of mouth or tongue
  • Leukoedema of mouth or tongue
  • Other oral epithelium disturbances
Inclusion Terms
  • Eosinophilic granuloma
  • Granuloma pyogenicum
  • Verrucous xanthoma
Inclusion Terms

Submucous fibrosis of tongue

Inclusion Terms

Focal oral mucinosis

Child Codes (More Specific Codes for K13):

K13.0 - Diseases of lips K13.1 - Cheek and lip biting K13.2 - Leukoplakia and other disturbances of oral epithelium, including tongue K13.21 - Leukoplakia of oral mucosa, including tongue K13.22 - Minimal keratinized residual ridge mucosa K13.23 - Excessive keratinized residual ridge mucosa K13.24 - Leukokeratosis nicotina palati K13.29 - Other disturbances of oral epithelium, including tongue K13.3 - Hairy leukoplakia K13.4 - Granuloma and granuloma-like lesions of oral mucosa K13.5 - Oral submucous fibrosis K13.6 - Irritative hyperplasia of oral mucosa K13.7 - Other and unspecified lesions of oral mucosa K13.70 - Unspecified lesions of oral mucosa K13.79 - Other lesions of oral mucosa

About ICD-10-CM Code K13 (Other diseases of lip and oral mucosa)

ICD-10-CM code K13 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM K13 became effective on October 1, 2024.

This page provides detailed information about K13 - Other diseases of lip and oral mucosa. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Other diseases of lip and oral mucosa.