CH UMZH Connect IG (R4), published by UMZH. This guide is not an authorized publication; it is the continuous build for version 1.0.0-cibuild built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/umzhconnect/umzhconnect-ig/ and changes regularly. See the Directory of published versions

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Official URL: http://fhir.ch/ig/ch-umzh-connect/ImplementationGuide/ch.fhir.ig.ch-umzh-connect				Version: 1.0.0-cibuild
Draft as of 2025-12-10				Computable Name: CHUMZHConnect
Copyright/Legal: CC0-1.0

Introduction

CH UMZH Connect is a FHIR Implementation Guide for the University Medicine Zurich (UMZH) focusing on referral and external service order processes

The UMZH-connect project aims to improve digital connectivity for referrals and external orders (e.g., lab orders) between healthcare providers in the Zurich area, particularly the university hospitals. The system is designed to be extensible — both in terms of use cases and participating organizations.

The goal is to establish an API framework that allows participants, as API consumers, to digitally create orders and referrals and, depending on the use case, access authorized data from each other. Hospitals — and later medical practices — will provide REST APIs that support read and write operations on authorized data scopes via web services.

Initial Use Cases focus on the following resource types:

• Order, service request and clinical question
• Administrative data (personal details, insurance, etc.)
• Diagnoses
• Medication
• Allergies
• Reports (documents)
• ImagingStudies

These content areas are intended to be expandable in the future.

Workflow orientation

This implementation guide is based on the core principles of Clinical Order Workflow IG with a focus on the Task at Fulfiller principle where the Placer creates a ServiceRequest and POSTs a Task to the Fulfiller's FHIR server, with the ServiceRequest referenced in Task.basedOn. The Fulfiller manages the Task lifecycle and updates the Placer about progress and outcomes.

The core concepts and principles are depicted in detail here:

Core concepts

• Resource Querying: The Placer SHALL support the _include parameter for querying the ServiceRequest along with all referenced resources.

Security

This IG specifies OAuth 2.0 and OpenID Connect–based architectures for securing APIs by the use of Security profiles such as SMART on FHIR define standards and OpenID Foundation’s FAPI 2.0, which sharpens security awareness by enforcing measures to mitigate particular risk scenarios.

The detailed security concept can be found here:

Security concept

Use cases

Orthopedic referral Sarcome tumorboard referral

IP Statements

This document is licensed under Creative Commons "No Rights Reserved" (CC0).

HL7®, HEALTH LEVEL SEVEN®, FHIR® and the FHIR ® are trademarks owned by Health Level Seven International, registered with the United States Patent and Trademark Office.

This implementation guide contains and references intellectual property owned by third parties ("Third Party IP"). Acceptance of these License Terms does not grant any rights with respect to Third Party IP. The licensee alone is responsible for identifying and obtaining any necessary licenses or authorizations to utilize Third Party IP in connection with the specification or otherwise.

This publication includes IP covered under the following statements.

• CC0-1.0
  Show Usage
  • Condition Category: Condition/HeartFailureHFrEF, Condition/SarcomaKnee and Condition/SuspectedACLRupture
  • Coverage Identifier Type: Coverage/CoverageMeier
  • EDQM - Standard Terms: MedicationStatement/MedicationConcor and MedicationStatement/MedicationEntresto
• ISO maintains the copyright on the country codes, and controls its use carefully. For further details see the ISO 3166 web page: https://www.iso.org/iso-3166-country-codes.html
  Show Usage
  • ISO 3166-1 Codes for the representation of names of countries and their subdivisions — Part 1: Country code: CHUMZHConnect, ChUmzhConnectServiceRequest... Show 8 more, ChUmzhConnectServiceRequestCategoryVS, Questionnaire/QuestionnaireSmokingStatus, UMZHconnectRestServer, ch-umzhconnectig-servicerequest-reasonreference, ch-umzhconnectig-servicerequest-supportinginfo, ch-umzhconnectig-task-inputreference, ch-umzhconnectig-task-outputcanonical and ch-umzhconnectig-task-outputreference
• The UCUM codes, UCUM table (regardless of format), and UCUM Specification are copyright 1999-2009, Regenstrief Institute, Inc. and the Unified Codes for Units of Measures (UCUM) Organization. All rights reserved. https://ucum.org/trac/wiki/TermsOfUse
  Show Usage
  • Unified Code for Units of Measure (UCUM): MedicationStatement/MedicationConcor and MedicationStatement/MedicationEntresto
• These codes are excerpted from Digital Imaging and Communications in Medicine (DICOM) Standard, Part 16: Content Mapping Resource, Copyright © 2011 by the National Electrical Manufacturers Association.
  Show Usage
  • DICOM Controlled Terminology Definitions: ImagingStudy/ImagingCT and ImagingStudy/ImagingPET
• This material contains content that is copyright of SNOMED International. Implementers of these specifications must have the appropriate SNOMED CT Affiliate license - for more information contact https://www.snomed.org/get-snomed or info@snomed.org.
  Show Usage
  • SNOMED Clinical Terms® (SNOMED CT®): ChUmzhConnectServiceRequest, ChUmzhConnectServiceRequestCategoryVS... Show 7 more, MedicationStatement/MedicationConcor, MedicationStatement/MedicationEntresto, Questionnaire/QuestionnaireSmokingStatus, QuestionnaireResponse/QuestionnaireResponseSmokingStatus, ServiceRequest/ReferralOrthopedicSurgery, ServiceRequest/ReferralTumorboard and Task/TaskReferralOrthopedicSurgeryUpdated
• This material derives from the HL7 Terminology (THO). THO is copyright ©1989+ Health Level Seven International and is made available under the CC0 designation. For more licensing information see: https://terminology.hl7.org/license.html
  Show Usage
  • AllergyIntolerance Clinical Status Codes: AllergyIntolerance/AllergyGado
  • identifierType: ChUmzhConnectServiceRequest, Patient/PetraMeier, ServiceRequest/ReferralOrthopedicSurgery and ServiceRequest/ReferralTumorboard

Cross Version Analysis

This is an R4 IG. None of the features it uses are changed in R4B, so it can be used as is with R4B systems. Packages for both R4 (ch.fhir.ig.ch-umzh-connect.r4) and R4B (ch.fhir.ig.ch-umzh-connect.r4b) are available.

Dependency Table

Package hl7.fhir.uv.extensions.r4#5.2.0 This IG defines the global extensions - the ones defined for everyone. These extensions are always in scope wherever FHIR is being used (built Mon, Feb 10, 2025 21:45+1100+11:00)

Package hl7.fhir.uv.extensions.r4#5.3.0-ballot-tc1 This IG defines the global extensions - the ones defined for everyone. These extensions are always in scope wherever FHIR is being used (built Sun, Aug 3, 2025 06:28+1000+10:00)

Package ch.fhir.ig.ch-core#6.0.0 FHIR implementation guide CH Core (built Tue, Dec 16, 2025 07:58+0000+00:00)

Package hl7.fhir.uv.sdc#3.0.0 The SDC specification provides an infrastructure to standardize the capture and expanded use of patient-level data collected within an EHR. This includes two components: * Support more sophisticated questionnaire/form use-cases such as those needed for research, oncology, pathology and other clinical domains. *Support pre-population and auto-population of EHR data into forms/questionnaires for uses outside direct clinical care (patient safety, adverse event reporting, public health reporting, etc.). (built Tue, Mar 8, 2022 18:32+0000+00:00)

Package ch.fhir.ig.ch-orf#3.0.2 Order & Referral by Form - Implementation Guide (CH ORF) (built Tue, Dec 16, 2025 09:33+0000+00:00)

Package ch.fhir.ig.ch-etoc#3.0.1 Implementation guide for eTOC based on CH ORF (built Tue, Dec 16, 2025 15:53+0000+00:00)

Package hl7.fhir.uv.subscriptions-backport.r4#1.1.0 The Subscription R5 Backport Implementation Guide enables servers running versions of FHIR earlier than R5 to implement a subset of R5 Subscriptions in a standardized way. (built Wed, Jan 11, 2023 15:34+1100+11:00)

Package hl7.fhir.uv.cow#1.0.0-ballot An Implementation Guide providing the foundational guidance for order-based workflow FHIR interoperability (built Mon, Apr 7, 2025 15:35+0000+00:00)

Package hl7.fhir.uv.tools.r4#0.9.0 This IG defines the extensions that the tools use internally. Some of these extensions are content that are being evaluated for elevation into the main spec, and others are tooling concerns (built Tue, Dec 16, 2025 23:18+1100+11:00)

Globals Table

There are no Global profiles defined