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. 2020 Jun 6;159(4):1575–1578.e4. doi: 10.1053/j.gastro.2020.06.003

Codes Used toIdentify Medications

Coding System Code Description Classification
RXNORM 327361 Adalimumab Biological therapy
RXNORM 819300 Golimumab Biological therapy
RXNORM 709271 Certolizumab Biological therapy
RXNORM 191831 Infliximab Biological therapy
RXNORM 1538097 Vedolizumab Biological therapy
RXNORM 354770 Natalizumab Biological therapy
RXNORM 847083 Ustekinumab Biological therapy
RXNORM 6851 Methotrexate Immunomodulators
RXNORM 1256 Azathioprine Immunomodulators
RXNORM 52582 Mesalamine Amino salicylates
RXNORM 32385 Olsalazine Amino salicylates
RXNORM 9524 Sulfasalazine Amino salicylates
RXNORM 8640 Prednisone Corticosteroids
RXNORM 19831 Budesonide Corticosteroids