EHDS Logical Information Models
0.1.0 - ci-build

EHDS Logical Information Models, published by Xt-EHR. This guide is not an authorized publication; it is the continuous build for version 0.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/Xt-EHR/xt-ehr-common/ and changes regularly. See the Directory of published versions

Logical Model: Dosaging model

Official URL: https://www.xt-ehr.eu/specifications/fhir/StructureDefinition/EHDSDosaging Version: 0.1.0
Draft as of 2025-03-31 Computable Name: EHDSDosaging

Logical model for usage instructions for administring the requested product. Based on FHIR Dosage complex data type. When implemented, this model may be reduced significantly according to the specific use case.

Usage:

Formal Views of Profile Content

Description of Profiles, Differentials, Snapshots and how the different presentations work.

NameFlagsCard.TypeDescription & Constraintsdoco
.. EHDSDosaging 0..* Base Dosaging model
Instances of this logical model can be the target of a Reference
... sequence 0..1 integer Order of the dosage instruction, in case one treatment consists of several dosaging schemes
... text 0..1 string Free text usage/dosage instructions
... additionalInstruction 0..* CodeableConcept Coded instructions, e.g warnings to the patient, like 'may cause drowsiness' etc
... doseAndRate 0..* Base Amount of medication administered per one dose (= one timing)
.... type 0..1 CodeableConcept The kind of dose or rate specified (e.g calculated, ordered, etc).
.... dose[x] 0..1 Amount of medication per one dose. (1 tablet, 2-3 tablets, 20ml)
..... doseQuantity Quantity
..... doseRange Range
.... rate[x] 0..1 Time period during which one defined dose is administered (per 1 hour, per 5-10 minutes)
..... rateRatio Ratio
..... rateQuantity Quantity
..... rateRange Range
... timing 0..1 Base When medication should be administered (period, time of day, frequency, etc)
.... event 0..* dateTime Exact date and/or time of the administration
.... code 0..1 CodeableConcept Timing abbreviation (AM - morning, Q4H - once in every 4 hours, BID - twice a day, etc)
.... repeat 0..1 Base Repetition of the administration.
..... bounds 0..1 Base Time bounds for the treatment (current dosaging scheme). Only one of the following can exist.
...... duration 0..1 Quantity Number of time units, e.g 10 days
...... range 0..1 Range A range of numbers of time units, 5-10 days
...... period 0..1 Period Start and end date, 05.08.2023 - 10.08.2023
..... count 0..1 Base Number of times to repeat, exact or range
...... count 0..1 integer Number of times (e.g 'once', '10 times')
...... countMax 0..1 integer Maximum number of times (e.g 'maximum 10 times')
..... duration 0..1 Base Duration of one administration, exact or range
...... duration 0..1 Quantity Duration of administration (e.g '5 minutes', '1 hour')
...... durationMax 0..1 Quantity Maximum duration of administration (e.g 'maximum 1 hour')
..... frequency 0..1 Base Frequency of intake/administration (e.g 'three times a day')
...... numberOfTimes 0..1 integer Number of times per period (e.g '3 times')
...... maxNumberOfTimes 0..1 integer Maximum number of times per period (e.g. 'maximum 3 times')
...... period 0..1 Quantity Duration to which the frequency applies (e.g '... / 1 day')
...... periodMax 0..1 Quantity Upper limit of the period (e.g ... / 4-6 hours)
..... dayOfWeek 0..* CodeableConcept The day of the week of administration, e.g Mon, Tue, etc
..... timeOfDay 0..* time Time of day of administration (e.g '10:00')
..... eventTime 0..* Base An event the administration is bound to, e.g 'before meal', '30 min before meal'
...... when 0..* CodeableConcept Time period or event ('before meal', 'immediately', 'morning')
...... offset 0..1 integer minutes from event, before or after (?not sure how to show before/after with only positive integers)
... asNeeded 0..1 boolean Take as needed
... asNeededFor 0..* CodeableConcept Take as needed for the coded reason
... bodySite 0..1 CodeableConcept Body site of administration
... routeOfAdministration 0..1 CodeableConcept Route of administration
... methodOfAdministration 0..1 CodeableConcept Method of administration
... maxDose 0..* Base Maximum dose for the patient
.... maxDosePerPeriod 0..* Ratio Upper limit on medication per unit of time
.... maxDosePerAdministration 0..1 Quantity Upper limit on medication per one administration
.... maxDosePerLifetime 0..1 Quantity Upper limit on medication per lifetime of the patient

doco Documentation for this format

 

Other representations of profile: CSV, Excel