
F90.9 ADHD Diagnosis Code: A Complete Guide
Attention-deficit hyperactivity disorder (ADHD) is a common neurodevelopmental condition affecting children and adults. The ICD-10 code F90.9 is used for “ADHD, unspecified type,” a critical classification for medical coding and billing. This guide explores F90.9, its clinical relevance, and how it fits into ADHD diagnosis and treatment.