K13
Other diseases of lip and oral mucosa
Non-billable headerNot valid on its own. Use one of the more specific codes under it.
K13 is a non-billable ICD-10-CM code category for other diseases of lip and oral mucosa. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are K13.0 Diseases of lips; K13.1 Cheek and lip biting; K13.2 Leukoplakia and other disturbances of oral epithelium, including tongue; K13.3 Hairy leukoplakia and 4 more. Its coding notes include a Use additional code instruction and 12 Excludes2 entries.
Use additional code
Add the listed code as a secondary code, if known.
This code
- code to identify:
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
This code
Also from chapter/block level (8 notes)
Inherited from Chapter 11 Diseases of the digestive system
- 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)
Includes
Further defines or gives examples of the content of the category.
This code
- epithelial disturbances of tongue
More specific codes under K13 8
- K13.0Diseases of lipsBillable
- K13.1Cheek and lip bitingBillable
- K13.2Leukoplakia and other disturbances of oral epithelium, including tongueHeader
- K13.3Hairy leukoplakiaBillable
- K13.4Granuloma and granuloma-like lesions of oral mucosaBillable
- K13.5Oral submucous fibrosisBillable
- K13.6Irritative hyperplasia of oral mucosaBillable
- K13.7Other and unspecified lesions of oral mucosaHeader