Multiple Sclerosis
ICD-9-CM Code	Description
340	Multiple sclerosis
IFN β-1a SC tiw
National Drug Code	Product Name	Manufacturer	Generic Name
44087002203	SC-IFN β-1a Rebif	EMD Serono, Inc.	Interferon beta-1a
44087004403	SC-IFN β-1a Rebif	EMD Serono, Inc.	Interferon beta-1a
44087018801	SC-IFN β-1a Rebidose Titration Pack	EMD Serono, Inc.	Interferon beta-1a
44087332201	SC-IFN β-1a Rebidose	EMD Serono, Inc.	Interferon beta-1a
44087334401	SC-IFN β-1a Rebidose	EMD Serono, Inc.	Interferon beta-1a
44087882201	SC-IFN β-1a Rebif	EMD Serono, Inc.	Interferon beta-1a

Note: Diagnoses (in ICD-9-CM format) used to identify adverse event of interest appear in Appendix B.

ICD-9-CM = International Classification of Diseases, Ninth Revision, Clinical Modification; IFN β-1a SC tiw = interferon beta-1a administered subcutaneously 3 times weekly.