ClientGUID field

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Data Element (edit)
Field Name: ClientGUID
CCMDB Label: not stated
CCMDB tab: not stated
Table: L_Log table
Data type: string
Length: 16
Program: Med and CC
Created/Raw: Raw
Start Date: 2022-08-29
End Date: 2300-01-01
Sort Index: 1.5

The unique person identifier from Cognos.

  • SMW

Legacy implementation right in the table

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This page is about the ClientGUID field which identifies people, not the ClientVisitGUID field which identifies admissions.


Many patients don't have MB PHINs so we generate PseudoPHINs. EPR solves this by using a field ClientGUID, which we get as part of the Cognos EPR Report. If we set up the infrastructure to actually put this into patient records then we might be able to step away from the PseudoPhin process, and should have many fewer link errors.

  • The Client GUID is not visible in EPR


Data that is entered without a ClientGUID

  • Could be a problem:
    • Manual entry if we miss an admission and this is identified later past the 28 day of data in COGNOS

Merged records (John or Jane Doe patient who get identified, and other corrections)

Chastity confirmed there is a merge process for J Does who get identified. Confirming how this works, emailed Chastity 2022-06-16.

  • Chastity confirmed there is a merge process for J Does who get identified. Confirming how this works, emailed Chastity 2022-06-16.
  • Asked Chastity if 3 month updates will be possible.
  • added: 2022-04-13
  • action: 2022-06-30
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This would likely replace Person ID field eventually, but we'd keep it until tested; Generate Person IDs would still need to be done to enter this into L_Person table.


  • review linking and related processes to see what could change to make best use of this
  • remove the L_Person table - we don't use it and this further means we don't need/use it. as confirmed with Julie here.
  • added: 2022-03-24
  • action: 2022-09-25
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Data Processing improvements

Having this field might further cut down on Pre-linking checks, or at least on how many problems those find. Or it might add to them, since merges could be messy.

Pagasa confirmed that we already see very few pre-linking checks that are actual errors, and that those are usually from PL_SamePHIN_Site_Diff_chart now: "I have few errors common for HSC assigned a temporary chart which starts to 300 number but patient had already old chart number, another scenario old chart number but single admission nothing to compare with then have a current admission which is the correct one. "


I started discussion with DSS that we would like to eventually back-fill this data. So, for any MRN where we don't have a ClientGUID we would ask for it to be provided.

Ancient records won't have a ClientGUID; Chastity doesn't know what method they used to generate the ID so we can't use it to recreate these. We can insert our PHIN/PseudoPHIN for those, but would need to have a cross check method to capture and update if a same PHIN ever comes in new with a ClientGUID.


Changing D_IDs

Changing D_IDs

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