F84.3Other childhood disintegrative disorder

F84.3 is the ICD-10-CM diagnosis code for other childhood disintegrative disorder. It belongs to category F84 (pervasive developmental disorders), block F80-F89 (pervasive and specific developmental disorders) and chapter 5 (mental, Behavioral and Neurodevelopmental disorders). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within F84, choose F84.3 (Other childhood disintegrative disorder) only when documentation doesn't support a more specific option: Autistic disorder (F84.0), Rett's syndrome (F84.2), Asperger's syndrome (F84.5), other pervasive developmental disorders (F84.8) and pervasive developmental disorder, unspecified (F84.9).

Don't report F84.3 together with the conditions in its Excludes1 note: Asperger's syndrome (F84.5), Autistic disorder (F84.0) and Rett's syndrome (F84.2).

Use an additional code to identify any associated neurological condition.

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 884 (Organic Disturbances and Intellectual Disability, relative weight 1.6001), in MDC 19 (Mental Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

The Medicare Code Editor expects this diagnosis only for patients age 0 through 17; other ages trigger an age-conflict edit.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 299.10 (childhood disintegrative disorder, current or active state).