K13 — Other diseases of lip and oral mucosa
Is K13 billable?
No — K13 is a non-billable header code. K13 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 13 billable codes beneath K13.
Billable codes under this header
- K13.0Diseases of lips
- K13.1Cheek and lip biting
- K13.3Hairy leukoplakia
- K13.4Granuloma and granuloma-like lesions of oral mucosa
- K13.5Oral submucous fibrosis
- K13.6Irritative hyperplasia of oral mucosa
- K13.21Leukoplakia of oral mucosa, including tongue
- K13.22Minimal keratinized residual ridge mucosa
- K13.23Excessive keratinized residual ridge mucosa
- K13.24Leukokeratosis nicotina palati
- K13.29Other disturbances of oral epithelium, including tongue
- K13.70Unspecified lesions of oral mucosa
- K13.79Other lesions of oral mucosa
K13 at a glance
| Code | K13 |
|---|---|
| Description | Other diseases of lip and oral mucosa |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Use additional code
Report an additional code alongside K13 to fully describe the condition. K13 is sequenced first.
- 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)
Excludes2 — not included here
The conditions below are not part of K13, but a patient may have both at the same time. When documentation supports it, K13 and the excluded code may both be reported.
Includes
Conditions classified to K13.
- epithelial disturbances of tongue
Excludes2 — not included here — inherited from Chapter 11
The conditions below are not part of K13, but a patient may have both at the same time. When documentation supports it, K13 and the excluded code may both be reported.
- 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)
What codes fall under K13? (8)
- K13.0Diseases of lips
- K13.1Cheek and lip biting
- K13.2Leukoplakia and other disturbances of oral epithelium, including tonguenot billable
- K13.3Hairy leukoplakia
- K13.4Granuloma and granuloma-like lesions of oral mucosa
- K13.5Oral submucous fibrosis
- K13.6Irritative hyperplasia of oral mucosa
- K13.7Other and unspecified lesions of oral mucosanot billable
How long has K13 existed?
K13 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.