1  Agents affecting nervous system and sensory organs

 2  Agents affecting individual organs

 3  Agents affecting metabolism

 4  Agents affecting cellular function

 5  Crude drugs and Chinese medicine formulations

 6  Agents against pathologic organisms and parasites

   61  Antibiotics

     611  Acting mainly on gram-positive bacteria

     612  Acting mainly on gram-negative bacteria

     613  Acting mainly on gram-positive and gram-negative bacteria

     614  Acting mainly on gram-positive bacteria and mycoplasma

     615  Acting mainly on gram-positive bacteria, gram-negative bacteria, rickettsia and chlamydia

     616  Acting mainly on acid-fast bacteria

       6161  Streptomycin antibiotics

       6162  Cycloserines

       6163  Capreomycins

       6164  Rifampicins

       6165  Enviomycins

       6169  Others

     617  Acting mainly on mold

     619  Miscellaneous

   62  Chemotherapeutics

   63  Biological preparations

   64  Parasitics (systemic)

   69  Other agents against pathogenic organisms and parasites

 7  Agents not mainly for therapeutic purpose

 8  Narcotics