7      1  )   4 Circadian rhythm is the name given to the roughly 24 hour cycles shown by physiological

                        processes in plants and animals. (The term circadian comes from the Latin circa, meaning

                        "around" and dies, "day", meaning literally, "around a day.") 

    7      2  )   4 Primary alveolar hypoventilation is a rare disorder of unknown cause. It leads to inadequate

                         breathing despite the lungs and airways being normal. Yes, idiopathic means unknown.

    7      3  )   3 Sleep apnea is the cessation of breathing that occurs during sleep. Usually due to

                        obstruction of the airway, it can also be due to inability of the brain to initiate respiration.

    7      4  )   4 Excessive sleepiness is the most accurate and best answer.

    7      5  )   2 Psychogenic is the same as non-Organic.

    7      6  )   4 None of the Answers are Correct because 291.82 Alcohol induced sleep disorders and 292.85 Drug induced sleep disorders

    7      7  )   3 Evans' syndrome is: a combination of idiopathic thrombocytopenia and autoimmune

                        hemolytic anemia. Treatment includes intravenous immunoglobulin (IVIg) and steroids with

                        or without transfusion of platelets and/or red blood cells.

    7      8  )   3 Thrombocytopenia is a low platelet count. Thrombocytopenia is the term for a reduced

                        platelet (thrombocyte) count. It occurs when platelets are lost from the circulation faster

                        than they can be replaced from the bone marrow where they are made. Thrombocytopenia

                         may either result from a failure of platelet production and/or an increased rate of removal

                        from blood.

    7      9  )   1 The term circadian comes from the Latin circa, meaning "around" and dies, "day", meaning

                        literally, "around a day."

    7     10  )   4 For a list of countries that have either implemented or will be implementing ICD-10 soon see

                        the link below:

                        http://www3.who.int/icd/1.htm

                        All ICD-10 codes online

                        http://www3.who.int/icd/vol1htm2003/fr-icd.htm