F84.3
Other childhood disintegrative disorder
F84.3 (also written F843) is a billable ICD-10-CM diagnosis code for other childhood disintegrative disorder. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 6 codes in category F84 (Pervasive developmental disorders). The Alphabetic Index lists it under 6 entries. Its coding notes include a Use additional code instruction, a Code also instruction, 3 Excludes1 entries and 1 Excludes2 entry.
Use additional code
Add the listed code as a secondary code, if known.
- code to identify any associated neurological condition.
Code also
Two codes may be needed to describe the condition. This note gives no sequencing order.
- any associated medical condition and intellectual disabilities
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (1 note)
- symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
Care settings
How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.
Home Health Primary
Accepted as the primary (principal) diagnosis on a home health claim. The Home Health Grouper assigns it to the Behavioral Health clinical group.
Source: CMS Home Health Grouper Software v07.2.26, effective October 1, 2026Hospital CC
Counts as a complication or comorbidity (CC) when reported as a secondary diagnosis on an inpatient claim. It does not count when the principal diagnosis is one of the 294 codes in its exclusion list. Some MS-DRGs also ignore a CC or MCC that defines the DRG.
Source: CMS MS-DRG Definitions Manual v44, effective October 1, 2026, Appendix CIPF Primary
IPF MS-DRG adjustment. A principal diagnosis of this code groups to this MS-DRG:
| MS-DRG | Description | Factor |
|---|---|---|
| 884 | Organic disturbances & intellectual disabilities | 1.08 |
Includes
Further defines or gives examples of the content of the category.
Also from chapter/block level (1 note)
- disorders of psychological development
Inclusion terms
Conditions classified to this code.
- Dementia infantilis
- Disintegrative psychosis
- Heller's syndrome
- Symbiotic psychosis
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 6 entries
- Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety), infantile, infantilis
- Disorder (of), childhood disintegrative NEC
- Disorder (of), disintegrative, childhood NEC
- Heller's disease or syndrome
- Psychosis, psychotic, disintegrative (childhood)
- Psychosis, psychotic, symbiotic (childhood)