F50 vs F50.2
F50 and F50.2 can never be reported together. ICD-10-CM declares them mutually exclusive with an Excludes1 note, meaning the two conditions cannot occur in the same patient — so exactly one of them is correct for any given encounter.
The official note, declared on F50.2
anorexia nervosa, binge eating/purging type (F50.02-)
F50
Eating disorders
Not billable
- Chapter 5
- Mental, Behavioral and Neurodevelopmental disorders
- Section
- F50-F59
F50.2
Bulimia nervosa
Not billable
- Chapter 5
- Mental, Behavioral and Neurodevelopmental disorders
- Section
- F50-F59
Use when the record says
- Bulimia NOS
- Hyperorexia nervosa
Indexed under
- Bulimia (nervosa)
- Hyperorexia nervosa
- Anorexia › nervosa › binge-eating type
- Disorder › eating › bulimia (of)
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027