L65 vs Q84
L65 (Other nonscarring hair loss) compared with Q84 (Other congenital malformations of integument), 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. L65 carries an Excludes1 note covering Q84: “congenital malformations of integument (Q84.-)”
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
| L65Other nonscarring hair loss | Q84Other congenital malformations of integument | |
|---|---|---|
| Billing status | Non-billable header | 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 | Other nonscarring hair loss is a non-billable ICD-10-CM category code (L65). | Other congenital malformations of integument is a non-billable ICD-10-CM category code (Q84). |
| Use additional code | code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources