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

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Official description

K13

Other diseases of lip and oral mucosa

ICD-10-CM diagnosis code · United States clinical modification

Where K13 sits

  1. 1

    Chapter 11

    Diseases of the digestive system (K00-K95)

  2. 2

    Section

    Diseases of oral cavity and salivary glands (K00-K14)

  3. 3

    Category K13

    Other diseases of lip and oral mucosa

  4. 4

    Code K13

    Other diseases of lip and oral mucosa

Codes under K13

K13 is a non-billable category. Choose the child code that best matches the documented diagnosis.

K13.0Diseases of lipsK13.1Cheek and lip bitingK13.2Leukoplakia and other disturbances of oral epithelium, including tongueK13.3Hairy leukoplakiaK13.4Granuloma and granuloma-like lesions of oral mucosaK13.5Oral submucous fibrosisK13.6Irritative hyperplasia of oral mucosaK13.7Other and unspecified lesions of oral mucosa

Notes for this code

Inclusion terms

No inclusion terms are listed for K13.

Code first

No “code first” instruction is listed for K13.

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)

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for K13.

Excludes2

Conditions not included here that may be reported separately when present.

  • certain disorders of gingiva and edentulous alveolar ridge (K05-K06)
  • cysts of oral region (K09.-)
  • diseases of tongue (K14.-)
  • stomatitis and related lesions (K12.-)

Source and release

Data release
U.S. ICD-10-CM · FY 2027
Effective date
Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Frequently asked questions

What does ICD-10-CM code K13 mean?

K13 is the FY 2027 U.S. ICD-10-CM code for “Other diseases of lip and oral mucosa.”

Is K13 a billable or specific ICD-10-CM code?

No. K13 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is K13 located in ICD-10-CM?

K13 is listed in Chapter 11, Diseases of the digestive system (K00-K95), within Diseases of oral cavity and salivary glands (K00-K14) (K00–K14), under category K13, Other diseases of lip and oral mucosa.

What coding notes are listed for K13?

No inclusion terms are listed for K13 in this reference record. No code-first instruction is listed. Additional-code instructions: 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). No Excludes1 note is listed. Excludes2 notes: certain disorders of gingiva and edentulous alveolar ridge (K05-K06); cysts of oral region (K09.-); diseases of tongue (K14.-); stomatitis and related lesions (K12.-).