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Were you diagnosed with Cognitive Disorders NOS (not otherwise specified)?
I looked just now in the DSM IV and DSM IV TR (revised) and a couple of other places and found Cognitive Disorders NOS and it appears it can be part of numerous other conditions.
294.9 Cognitive Disorder Not Otherwise Specified
This category is for disorders that are characterized by cognitive dysfunction presumed to be due to the direct physiological effect of a general medical condition that do not meet criteria for any of the specific deliriums, dementias, or amnestic disorders listed in this section and that are not better classified as Delirium Not Otherwise Specified, Dementia Not Otherwise Specified, or Amnestic Disorder Not Otherwise Specified. For cognitive dysfunction due to a specific or unknown substance, the specific Substance-Related Disorder Not Otherwise Specified category should be used.
1.Mild neurocognitive disorder: impairment in cognitive functioning as evidenced by neuropsychological testing or quantified clinical assessment, accompanied by objective evidence of a systemic general medical condition or central nervous system dysfunction.
2.Postconcussional disorder following a head trauma, impairment in memory or attention with associated symptoms.
Information from Diagnostic and Statistical Manual of Mental Disorders DSM-IV
Also just found on wikipedia
In the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR), which describes 250 disorders and their symptoms, cognitive disorders are classified under a psychological disorder in axis I. It is described as disorders with a significant impairment of cognition or memory that represents a marked deterioration from a previous level of function.