“Neurodevelopmental Disorder” is an umbrella-term for conditions that affect the growth or development of the brain or central nervous system. A condition like this usually manifests early in child’s development before the child enters primary school. The disorder is characterised by developmental deficits that produce impairments of personal, social, academic, or occupational functioning.
The short answer is, “no”. However, ADHD includes impairment in one or more processes related to perceiving, thinking, remembering, or learning, so it may be more useful to view ADHD as a learning disorder. In doing so, it is important to acknowledge that it differs from currently recognised reading or non-verbal learning disorders.