A ALIMENTARY TRACT AND METABOLISM

 B BLOOD AND BLOOD FORMING ORGANS

 C CARDIOVASCULAR SYSTEM

 D DERMATOLOGICALS

 G GENITO URINARY SYSTEM AND SEX HORMONES

 H SYSTEMIC HORMONAL PREPARATIONS, EXCL. SEX HORMONES AND INSULINS

 J ANTIINFECTIVES FOR SYSTEMIC USE

 L ANTINEOPLASTIC AND IMMUNOMODULATING AGENTS

   L01 ANTINEOPLASTIC AGENTS

   L02 ENDOCRINE THERAPY

   L03 IMMUNOSTIMULANTS

   L04 IMMUNOSUPPRESSANTS

     L04A IMMUNOSUPPRESSANTS

       L04AA Selective immunosuppressants

       L04AB Tumor necrosis factor alpha (TNF-alpha) inhibitors [DG:DG01936]

       L04AC Interleukin inhibitors [DG:DG02019]

       L04AD Calcineurin inhibitors [DG:DG03129]

       L04AE Sphingosine-1-phosphate (S1P) receptor modulators

       L04AF Janus-associated kinase (JAK) inhibitors

       L04AG Monoclonal antibodies

         L04AG01 Muromonab-CD3

         L04AG02 Efalizumab

         L04AG03 Natalizumab

         L04AG04 Belimumab

         L04AG05 Vedolizumab

         L04AG06 Alemtuzumab

         L04AG07 Begelomab

         L04AG08 Ocrelizumab

         L04AG09 Emapalumab

         L04AG10 Inebilizumab

         L04AG11 Anifrolumab

         L04AG12 Ofatumumab

         L04AG13 Teprotumumab

         L04AG14 Ublituximab

         L04AG15 Divozilimab

         L04AG16 Rozanolixizumab

       L04AH Mammalian target of rapamycin (mTOR) kinase inhibitors

       L04AJ Complement inhibitors

       L04AK Dihydroorotate dehydrogenase (DHODH) inhibitors

       L04AX Other immunosuppressants

 M MUSCULO-SKELETAL SYSTEM

 N NERVOUS SYSTEM

 P ANTIPARASITIC PRODUCTS, INSECTICIDES AND REPELLENTS

 R RESPIRATORY SYSTEM

 S SENSORY ORGANS

 V VARIOUS