K13.21
Leukoplakia of oral mucosa, including tongue
- Release
- FY 2027
- Effective
Hierarchy
Where K13.21 sits in the official hierarchy. Each level is the code it is classified under.
- K13 Other diseases of lip and oral mucosa
- K13.2 Parent Leukoplakia and other disturbances of oral epithelium, including tongue
- K13.21 This code Leukoplakia of oral mucosa, including tongue
Official Coding Notes
Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.
Includes
epithelial disturbances of tongue
Inherited from K13 — Other diseases of lip and oral mucosa
Inclusion Terms
Leukokeratosis of oral mucosa
Inclusion Terms
Leukoplakia of gingiva, lips, tongue
Excludes1
carcinoma in situ of oral epithelium ( D00.0- )
Inherited from K13.2 — Leukoplakia and other disturbances of oral epithelium, including tongue
Excludes1
hairy leukoplakia ( K13.3 )
Excludes1
leukokeratosis nicotina palati ( K13.24 )
Excludes2
certain disorders of gingiva and edentulous alveolar ridge (K05-K06)
Inherited from K13 — Other diseases of lip and oral mucosa
Use Additional Code
alcohol abuse and dependence ( F10 .-)
Inherited from K13 — Other diseases of lip and oral mucosa
Use Additional Code
exposure to environmental tobacco smoke ( Z77.22 )
Inherited from K13 — Other diseases of lip and oral mucosa
Use Additional Code
exposure to tobacco smoke in the perinatal period ( P96.81 )
Inherited from K13 — Other diseases of lip and oral mucosa
Use Additional Code
history of tobacco dependence ( Z87.891 )
Inherited from K13 — Other diseases of lip and oral mucosa
Use Additional Code
occupational exposure to environmental tobacco smoke ( Z57.31 )
Inherited from K13 — Other diseases of lip and oral mucosa
Version History
How K13.21 appears in each release imported from the official files, newest first.
-
FY 2027 Effective
CurrentLeukoplakia of oral mucosa, including tongue
-
FY 2026 Effective
UnchangedLeukoplakia of oral mucosa, including tongue
Related Codes
Other codes under K13.2
Codes whose official notes reference K13.21
Data Source
Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.
- Release
- FY 2027
- Effective
- Source file
- icd10cm-code-descriptions-2027.zip
Official ICD-10-CM source files (opens in a new tab)
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