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2 Minute MedicineICD-10 Lookup

ICD-10-CM code · FY2027

K13.21 Leukoplakia of oral mucosa, including tongue

BillableValid for claims as a specific diagnosis code

About K13.21

Code
K13.21
Billable
Yes
Short description
Leukoplakia of oral mucosa, including tongue
Category
K13 Other diseases of lip and oral mucosa
Block
K00-K14 Diseases of oral cavity and salivary glands
Chapter
11 Diseases of the digestive system
Code set
FY2027, October 1, 2026 to September 30, 2027

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Coding notes for K13.21

Applicable to Other names for conditions reported with this code.

  • Leukokeratosis of oral mucosa
  • Leukoplakia of gingiva, lips, tongue

Excludes1 Not coded here: never report these together with this code (use the code given instead).

  • hairy leukoplakia (K13.3)
  • leukokeratosis nicotina palati (K13.24)

Also applies, from K13.2 Leukoplakia and other disturbances of oral epithelium, including tongue

Excludes1 Not coded here: never report these together with this code (use the code given instead).

  • carcinoma in situ of oral epithelium (D00.0-)
  • hairy leukoplakia (K13.3)

Also applies, from K13 Other diseases of lip and oral mucosa

Includes Conditions this code covers.

  • epithelial disturbances of tongue

Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.

  • 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 Add a second code for the detail named here.

  • 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)
Chapter 11 notes (apply to every code in it)

Excludes2 Not part of this condition, but a patient can have both: report both codes when both apply.

  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Related codes in K13.2

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