K13 Other diseases of lip and oral mucosa

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Other diseases of lip and oral mucosa is K13 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
K00-K14: Diseases of oral cavity and salivary glands (K00-K14)
Category K13
16 codes (13 billable)
FY2026 Status
Stable since FY2024
Includes
  • epithelial disturbances of tongue
Excludes2
Not included here. These conditions are coded elsewhere but may be coded together if applicable.
  • certain disorders of gingiva and edentulous alveolar ridge (K05-K06)
  • cysts of oral region (K09.-)
  • diseases of tongue (K14.-)
  • stomatitis and related lesions (K12.-)
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)

Official Coding Guidelines

Chapter 11 reserved for future expansion

11. Chapter 11: Diseases of the Digestive System (K00-K95) Reserved for future guideline expansion

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.11

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

More Specific Codes

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

Related Codes in 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
Search all 70,000+ ICD-10-CM codes →
Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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