Personal Health Device Implementation Guide, published by HL7 International / Health Care Devices. This guide is not an authorized publication; it is the continuous build for version 1.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/phd/ and changes regularly. See the Directory of published versions
Note that this time stamp identifier is part of the Observation.identifier whose sole purpose is to perform a conditional create transaction. The identifier is not to be interpreted by a consumer of the resource and it should not be used for informational content.
This algorithm shows how one generates the time stamp as reported by the PHD for use in the Observation.identifier element. The Observation.identifier element is used in the PHD profiles to perform conditional creates and thus eliminate data duplication.
If the sensor reports high resolution relative time, the string will be the number of microseconds as an unsigned integer with no leading zeros. On the wire this value is an Mder sequence of 8 bytes with the MSB to the left.