Add new RoleClass: Place of Existence

Note: The use-case is used as part of HL7 v3 training material.

Summary

This proposal is related to the Patient R-MIM when used for NonPersonLivingSubjects, in this case a patient of a Tree-species. In order to identify the GPS coordinates of a tree a new RolClass of 'Place of Existence' is proposed, akin to the existing class codes BIRTHPL and DEATHPL.

Use Case

Issue: geographic location of the tree (its GPS coordinates).

• Patient.addr can't be used, the AD data type is meant to be used for a mailing address only (see R-MIM below, Patient.addr has been removed from it)
• This is part of the patient demographics, note that trees don't move, so we're not talking about 'patient tracking'.
• NonPersonLivingSubject has a Birthplace (BIRTHPL) role associated with it, played by E_Place which is subject of A_SpatialCoordinates.
  • Birthplace has the following definition: Relates a place (playing Entity) as the location where a living subject (scoping Entity) was born. - in this case: the place where the tree was initially planted, which may have been in a tree nursery, which isn't a very useful bit of information.
  • Place of Death (DEATHPLC) is another role of E_Place (although not used in the Patient R-MIM). It is defined as: Relates a place (playing Entity) as the location where a living subject (scoping Entity) died.

Proposal

• Create a new Class code: EXISTENCEPL "Place of Existence", defined as "Relates an entity (player; a living subject) to a location (scoper) where it exists. The entity has to be a living subject and of a species without autonomous mobility characteristics (e.g. a tree), i.e. its location will only change through outside intervention (e.g. by humans, tornado's, etc.)". (Updated definition as per agreement within PA in Kyoto, May 2009.)
  • The newly proposed class code is a child of: LOCE (Located Entity Role) "Relates an entity (player) to a location (scoper) at which it is present in some way. This presence may be limited in time."
  • The newly proposed class code is [the only] sibling of STOR (Stored Entity Role) "Relates an entity (player) (e.g. a device) to a location (scoper) at which it is normally found or stored when not used."
• Add another Role (played by E_Place) to the Person part of the PA D-MIM next to Birthplace and Place of Death: associate NonPersonLivingSubject with a PlaceOfExistence role, scoped by E_Place which is subject of A_SpatialCoordinates.

Discussion

1. (WGM, January 2007) Gregg suggested to use an Encounter interaction, with an Encounter act in INT mood, and a service delivery location with an associated A_SpatialCoordinates CMET. This would convey that "all future/planned encounters with Tree X should take place at some specific GPS coordinates".
   • (René) This views place-of-existence not as an element of demographics (like address) but as an attribute of future encounters. Demographics details are genrally used to establish/determine identity: for a tree its location is one of its core characteristics which fit within scope of demographics data.
2. (PA, WGM, Kyoto, May 2009, THU Q3): Motion to agree upon the creation of a new classcode: EXISTENCEPL with definition "Place of Existence", defined as "Relates an entity (player; a living subject) to a location (scoper) where it exists. The entity has to be a living subject and of a species without autonomous mobility characteristics (e.g. a tree), i.e. its location will only change through outside intervention (e.g. by humans, tornado's)" (motion by Alexander Henket, second Alexander de Leon, 4-0-0).
3. (PA, WGM, Kyoto, May 2009, THU Q3): ACTION: Rene to update the proposal and submit content to the listserve.