F94.1 vs F94.2
F94.1 and F94.2 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 F94.1
disinhibited attachment disorder of childhood (F94.2)
F94.1
Reactive attachment disorder of childhood
Billable
- Chapter 5
- Mental, Behavioral and Neurodevelopmental disorders
- Section
- F90-F98
Indexed under
- Disorder › reactive attachment (of)
- Disorder › attachment › reactive (of)
F94.2
Disinhibited attachment disorder of childhood
Billable
- Chapter 5
- Mental, Behavioral and Neurodevelopmental disorders
- Section
- F90-F98
Use when the record says
- Affectionless psychopathy
- Institutional syndrome
Indexed under
- Institutional syndrome (childhood)
- Disorder › disinhibited attachment (of)
- Institutionalization, affecting child › disinhibited attachment
- Psychopathy, psychopathic › affectionless
- Syndrome › institutional
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