K13.0 vs L59
K13.0 (Diseases of lips) compared with L59 (Other disorders of skin and subcutaneous tissue related to radiation), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. K13.0 carries an Excludes1 note covering L59: “cheilitis due to radiation-related disorders (L55-L59)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| K13.0Diseases of lips | L59Other disorders of skin and subcutaneous tissue related to radiation | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | K00-K95 — Diseases of the Digestive System (K00-K95) | L00-L99 — Diseases of the Skin and Subcutaneous Tissue (L00-L99) |
| Definition | Diseases of lips is a billable ICD-10-CM diagnosis code (K13.0). | Other disorders of skin and subcutaneous tissue related to radiation is a non-billable ICD-10-CM category code (L59). |
| Includes | epithelial disturbances of tongue Abscess of lips Angular cheilitis Cellulitis of lips | — |
| Use additional code | code to identify: alcohol abuse and dependence (F10.-) exposure to environmental tobacco smoke (Z77.22) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources