opened on:  11 Jan 2018, 16:54:45

_dta:
  1.  date_changes20181 set up by Jean Roth , jroth@nber.org , 11 Jan 2018
  2.  NBER URL: http://www.nber.org/data/ndc-hcpcs-crosswalk-dme.html
  3.  Source Page: https://www.dmepdac.com/crosswalk/index.html
      https://www.dmepdac.com/crosswalk/2018.html

ndc:
  1.  The National Drug Code (NDC) serves as a universal product identifier for
      human drugs and biologics.
  2.  Each NDC must be reported as an 11-digit code unique to the manufacturer
      of the specific drug or product.

ndc13:
  1.  The National Drug Code (NDC) serves as a universal product identifier for
      human drugs and biologics.
  2.  Each NDC must be reported as an 11-digit code unique to the manufacturer
      of the specific drug or product.

> 0181.dta
  obs:            14                          
 vars:             5                          11 Jan 2018 16:54
 size:           616                          (_dta has notes)
-------------------------------------------------------------------------------
              storage   display    value
variable name   type    format     label      variable label
-------------------------------------------------------------------------------
ndc             str11   %11s                * National Drug Code (NDC)
ndc13           str13   %13s                * National Drug Code (NDC) with
                                                Dashes
change          str17   %17s                  Change
olddate         byte    %td..                 Old Date
newdate         int     %td..                 New Date
                                            * indicated variables have notes
-------------------------------------------------------------------------------
Sorted by: ndc