FY2027
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Excludes1 pair

F94.1 vs F94.2

F94.1 and F94.2 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 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 (childhood)
  • Disorder › attachment › reactive
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 (childhood)
  • Institutionalization, affecting child › disinhibited attachment
  • Psychopathy, psychopathic › affectionless
  • Syndrome › institutional (childhood)

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