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.
suggestion for scope description
http://build.fhir.org/ig/IHE/ITI.PIXm/branches/scope_differ_iti8/ITI-104.html