Patient Identifier Cross-referencing for mobile (PIXm)
3.1.0 - Trial-Implementation

Patient Identifier Cross-referencing for mobile (PIXm), published by IHE IT Infrastructure Technical Committee. This guide is not an authorized publication; it is the continuous build for version 3.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/IHE/ITI.PIXm/ and changes regularly. See the Directory of published versions

## 1:41 PIXm Home

Official URL: https://profiles.ihe.net/ITI/PIXm/ImplementationGuide/ihe.iti.pixm | Version: 3.1.0
Active as of 2026-02-03 | Computable Name: IHE_PIXm

The Patient Identifier Cross-reference for Mobile (PIXm) Profile provides RESTful transactions for mobile and lightweight browser-based applications to create, update and delete patient records in a Patient Identifier Cross-reference Manager and to query the Patient Identifier Cross-reference Manager for a patient’s cross-domain identifiers.

Significant Changes, Open and Closed Issues

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### Organization of This Guide

This guide is organized into following sections:

- Volume 1: Use-Case Analysis
  - 41.1 PIXm Actors, Transactions, and Content Modules
  - 41.2 PIXm Actor Options
  - 41.3 PIXm Required Actor Groupings
  - 41.4 PIXm Overview
  - 41.5 PIXm Security Considerations
  - 41.6 PIXm Cross Profile Considerations
- Volume 2: Transaction Detail
  - 3.83 Patient Identifier Cross-reference Query [ITI-83]
  - 3.104 Patient Identity Feed FHIR [ITI-104]
- Other
  - Test Plan
  - Changes to Other Documents
  - Download and Analysis

Click on any of the links above, navigate the contents using the Table of Contents or, if you are looking for a specific artifact, see the index of Artifacts.

### Conformance Expectations

IHE uses the normative words: Shall, Should, and May according to standards conventions.

PIXm uses `Must Support` in StructureDefinitions with the definition found in Appendix Z. This is equivalent to the IHE use of R2 as defined in Appendix Z.