SQL statement not executing - inside "like" sql statement

 I have some sql that I have been trying to develop , but I have run into a little snag.  I have included the offending part of the sql statement according to 05 sql server mgmt.
 The issue is basically with the like statment with multiple values.  I have searched and have not found any informaition on this issuue.
 PAYER_CATEGORY =
     CASE
     when (oins.short_name not like '%medicaid%', '%medicare%' '%paid%' '%cash%') then '01'
     when (oins.short_name like '%medicare%') then '02'
     when (oins.short_name like '%medicaid%') then '03'
      when (oins.short_name like '%cash%', 'paid%') then '04'
       else '05'
     end,
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