DSIC DPT GET ID (2210)    REMOTE PROCEDURE (8994)

This returns the patient's identifier based upon their eligibility code.  
For the VA, this will be the SSN (dashed) ^ last 4 of SSN.  For non-VA 
systems this will be that systems ID.

• PAT
  PARAMETER TYPE:   LITERAL
  MAXIMUM DATA LENGTH:   35
  REQUIRED:   YES
  SEQUENCE NUMBER:   1
  DESCRIPTION:   

  This is the patient's name, IFN, or any other acceptable lookup value.
  

• ISSSN
  PARAMETER TYPE:   LITERAL
  MAXIMUM DATA LENGTH:   1
  REQUIRED:   NO
  SEQUENCE NUMBER:   2
  DESCRIPTION:   

  This is a Boolean flag (1 or 0).  If 1 then the lookup value in the PAT 
  input parameter is the patient's SSN.
  

• VAPTYP
  PARAMETER TYPE:   LITERAL
  MAXIMUM DATA LENGTH:   5
  REQUIRED:   NO
  SEQUENCE NUMBER:   3
  DESCRIPTION:   

  This is a pointer value to the Eligibility file (#8).
  

If problems, return -1^message
Else return:
  For VA systems, SSN (dashed) ^ last 4 of SSN
  For non-VA systems, return patient identifier for that system
    Note, this will only work if the VAPTYP parameter is passed
    and that eligibility code is listed in that patient's record
    in the eligibility multiple in the (or primary eligibility
    field) in the PATIENT file (#2).