91  Agents affecting nervous system

   911  General anesthetics

     9111  Ethers and preparations

     9112  Barbituric acids soluble, thiobarbituric acids soluble and preparations

     9113  Kethamine, derivatives and preparations

     9119  Other general anesthetics

   912  Hypnotics and sedatives

   913  Antipyretics, analgesics and antiinflammatory

   914  Stimulants

   915  Antispasmodics

   916  Local anesthetics

   917  Autonomic agents (Autonomics)

   919  Other agents affecting nervous system

 92  Agents affecting circulatory organs, respiratory organs and urinary organs

 93  Agents affecting digestive organs

 94  Agents for breeding

 95  Agents for external use

 96  Agents affecting metabolism

 97  Agents against pathogenic micro-organisms and parasites (except biological products and disinfectants)

 98  Biological preparations

 99  Agents for not mainly purpose of therapeutic