| | Conditions & Treatments | ADHD (Attention-Deficit/Hyperactivity Disorder) Why is ADHD coded on Axis II? Attention Deficit Hyperactivity Disorder (ADHD) is coded on Axis I, not Axis II, of the Diagnostic and Statistical Manual of Mental Disorders (DSM). ADHD (Attention-Deficit/Hyperactivity Disorder) - Related Articles Where to buy focus formula for ADHD child? Tips on Dealing With Adult ADHD Moods What does the medical abbreviation ADH mean? How to Treat ADHD With Caffeine Herbal Treatments for ADD and ADHD What age does ADHD occur? Daydreaming in ADHD Children