_dta:
  1.  icd9sglong2011 set up by Jean Roth , jroth@nber.org , 27 Apr 2017
  2.  NBER URL: http://www.nber.org/data/icd9-cm-diagnosis-and-procedure-code-descriptions.html
  3.  Source Page: https://www.cms.gov/Medicare/Coding/ICD9ProviderDiagnosticCodes/codes.html
  4.  Source File URL: www.cms.gov/Medicare/Coding/ICD9ProviderDiagnosticCodes/Downloads/cmsv28_master_descriptions.zip
  5.  icd9sgshort2011 set up by Jean Roth , jroth@nber.org , 27 Apr 2017

  obs:         3,859                          
 vars:             4                          27 Apr 2017 18:40
 size:       667,607                          (_dta has notes)
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              storage   display    value
variable name   type    format     label      variable label
-----------------------------------------------------------------------------------------------------------------------------------------------------------------
prcdrcd         str4    %9s                   ICD9 Surgical Procedure Code
shortdesc       str164  %164s                 Short Description
version         byte    %9.0g                 ICD-9-CM Diagnosis and Procedure Codes
fyear           float   %9.0g                 Fiscal Year
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Sorted by: prcdrcd