Appointment ACDR Arrived Tag CodeSystem Code system¶
| Canonical | ../CodeSystem/appointment-acdr-arrived |
|---|---|
| Status | draft · 1.26.0 |
| Content | complete |
| Source | FSH · JSON |
Records that an appointment's arrival notification has been sent to Ontario Health's ACDR. Carried
as a tag on Appointment.meta.tag, where this is the tag's system.
A tag, not an extension. The address identifies the system of a Coding in meta.tag, which
is why it is declared as a code system. The vocabulary is the unusual part: the codes are the
literal strings true and false, the writer's rendering of a boolean.
Absent means not sent -- and nothing more. A missing tag and the code false mean the same
thing to a reader. Neither distinguishes "not yet sent" from "will never be sent": an appointment
carries no tag when its clinic has no ACDR endpoint configured, when its patient is not in scope for
the provincial record, or when the arrival has not happened. The tag records a send, not eligibility
or intent. Compare case-insensitively and treat anything that is not true as not sent rather than
as an error.
It is a send marker, not a delivery receipt. It is written once the message has been sent and
was not refused. It does not say the receiving system processed or accepted the record, and it
carries no time. A consumer that needs the timing or the message itself should read AuditEvent.
It says nothing about the appointment. No clinical or scheduling fact follows from it, and the appointment's own status is unaffected by whether a send has happened.
One of two sibling systems, one per outbound integration. The other is
../CodeSystem/appointment-ocean-sent, which carries this same true /
false vocabulary under its own address; a third integration would be a third system. They are
separate because a writer keeps a single tag per system, replacing rather than adding, so two send
markers sharing one system would erase each other. Read one for the state of one integration only:
neither implies anything about the other.
Nexus EMR writes this today at
http://services.well.com/fhir/tags/appointment/acdr-arrived (FHIR-378): it is live in stored
Appointment.meta.tag codings and in code, and is under migration to the canonical declared here.
Write the canonical; expect both until the migration completes, and match both addresses exactly
rather than deriving one from the other -- the final segment differs between them, not only the
host.
| Code | Display | Definition |
|---|---|---|
true |
Sent | The appointment's arrival notification has been sent to Ontario Health's ACDR and was not refused. Read on the sending side so that a second arrival notification is not sent for t… |
false |
Not sent | The arrival notification has not been sent. Carries nothing an absent tag does not -- a reader should treat it exactly as an absent tag. |