Was Not Otherwise Specified?

In medicine, Not Otherwise Specified (NOS) is a subcategory in systems of disease/disorder classification such as ICD-9, ICD-10, or DSM-IV. It is generally used to note the presence of an illness where the symptoms presented were sufficient to make a general diagnosis, but where a specific diagnosis was not made.

What is not otherwise specified disorder?

Pervasive Developmental Disorder – Not Otherwise Specified (PDD-NOS) refers to a group of disorders characterised by impairment in the development of social interaction, verbal and non-verbal communication, imaginative activity and a limited number of interests and activities that tend to be repetitive.

What does Nos mean in psychiatric diagnosis?

'Not Otherwise Specified' (NOS) in the Diagnosis of Mental Disorders.

Elena Rostova

Elena Rostova

Lead Health, Wellness & Medical Journalist

Elena Rostova holds a Master's degree in Public Health Journalism. She covers groundbreaking medical research, holistic wellness trends, mental health awareness, and nutritional science.