L13.0 vs L20
L13.0 (Dermatitis herpetiformis) compared with L20 (Atopic dermatitis), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. L20 carries an Excludes2 note covering L13.0: “dermatitis herpetiformis (L13.0)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| L13.0Dermatitis herpetiformis | L20Atopic dermatitis | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | L00-L99 — Diseases of the Skin and Subcutaneous Tissue (L00-L99) | L00-L99 — Diseases of the Skin and Subcutaneous Tissue (L00-L99) |
| Definition | Dermatitis herpetiformis is a billable ICD-10-CM diagnosis code (L13.0). | Atopic dermatitis is a non-billable ICD-10-CM category code (L20). |
| Includes | Duhring's disease Hydroa herpetiformis | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources