F42.4 vs F98.8
F42.4 (Excoriation (skin-picking) disorder) compared with F98.8 (Other specified behavioral and emotional disorders with onset usually occurring in childhood and adolescence), 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. F42.4 carries an Excludes1 note covering F98.8: “other specified behavioral and emotional disorders with onset usually occurring in early childhood and adolescence (F98.8)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Yes, when both are documented. F98.8 carries an Excludes2 note covering F42.4: “obsessive-compulsive disorder (F42.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| F42.4Excoriation (skin-picking) disorder | F98.8Other specified behavioral and emotional disorders with onset usually occurring in childhood and adolescence | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | F01-F99 — Mental, Behavioral and Neurodevelopmental Disorders (F01-F99) | F01-F99 — Mental, Behavioral and Neurodevelopmental Disorders (F01-F99) |
| Definition | Excoriation (skin-picking) disorder is a billable ICD-10-CM diagnosis code (F42.4). | Other specified behavioral and emotional disorders with onset usually occurring in childhood and adolescence is a billable ICD-10-CM diagnosis code (F98.8). |
| Includes | — | Excessive masturbation Nail-biting Nose-picking Thumb-sucking |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources