K13

K13: Other diseases of lip and oral mucosa

Non-billable headerICD-10-CM

K13 is a non-billable header ICD-10-CM code for other diseases of lip and oral mucosa. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes2: not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

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 secondary code to capture the detail described below.

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)

Includes

Conditions this code covers.

epithelial disturbances of tongue

Other codes that can never be billed with K13

Their own Excludes1 notes name this code, so the conflict is not listed above.

K12Stomatitis and related lesions
K13.2Leukoplakia and other disturbances of oral epithelium, including tongue
K13.21Leukoplakia of oral mucosa, including tongue
L98.5Mucinosis of the skin

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead K13

8 child codes. Green means billable.