F84.3 Other childhood disintegrative disorder
ICD-10-CM · CMS code reference
F84.3 covers a childhood disintegrative disorder, including records that say Heller's syndrome, dementia infantilis, disintegrative psychosis or symbiotic psychosis. If Rett's syndrome is documented, use F84.2 instead.
What to know
- Excludes1: F84.3 is not coded with autistic disorder (F84.0), Rett's syndrome (F84.2) or Asperger's syndrome (F84.5). Report the one the provider documents.
- Use an additional code to identify any associated neurological condition.
Coding notes
From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.
Also covers
- Dementia infantilis
- Disintegrative psychosis
- Heller's syndrome
- Symbiotic psychosis
Excludes1
Not coded together with this code. The exception is when the two conditions are unrelated to each other.
Use additional code
Add a second code for the following, when documented.
- code to identify any associated neurological condition.
Code also
A second code may be needed. Sequencing depends on the encounter.
- any associated medical condition and intellectual disabilities
Related codes
Common questions
Is F84.3 a billable code?
Yes. F84.3 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.