L85.0 vs Q80
L85.0 (Acquired ichthyosis) compared with Q80 (Congenital ichthyosis), 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. L85.0 carries an Excludes1 note covering Q80: “congenital ichthyosis (Q80.-)”
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
| L85.0Acquired ichthyosis | Q80Congenital ichthyosis | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | L00-L99 — Diseases of the Skin and Subcutaneous Tissue (L00-L99) | Q00-Q99 — Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99) |
| Definition | Acquired ichthyosis is a billable ICD-10-CM diagnosis code (L85.0). | Congenital ichthyosis is a non-billable ICD-10-CM category code (Q80). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources