openEHR-clinical Digest, Vol 45, Issue 1

And proper HL7 v3

Deceased Indicator
Boolean with true / false
And the decease date can be added
All in the person entity

Works same as Grahame explains for FHIR.

In summary
If we meet someone in the real world we know he is alive.
We are Modelling however and abstract from reality.

Alive is a state after birth with some birthdate
Alive is assumed state until
Decease state is set to true with some date.

Vriendelijke groet,

Dr. William Goossen

Directeur Results 4 Care BV
+31654614458