F81.9Developmental disorder of scholastic skills, unspecified

F81.9 is the ICD-10-CM diagnosis code for developmental disorder of scholastic skills, unspecified. It belongs to category F81 (specific developmental disorders of scholastic skills), 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 F81, choose F81.9 (Developmental disorder of scholastic skills, unspecified) only when documentation doesn't support a more specific option: specific reading disorder (F81.0), Mathematics disorder (F81.2) and other developmental disorders of scholastic skills (F81.8).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 886 (Behavioral and Developmental Disorders, relative weight 1.8678), 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.

It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.

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 315.9 (unspecified delay in development) and V40.0 (mental and behavioral problems with learning).