Excludes1 pair
F50- vs F50.2-
F50 and F50.2 are not coded together. ICD-10-CM declares them mutually exclusive with an Excludes1 note — the two conditions are not expected to occur together, so exactly one of them is normally correct for a given encounter. The Official Guidelines carve out one exception: if the two conditions are clearly unrelated to each other, both may be reported.
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
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