# ISO/TS 21091:2005 — Withdrawn and superseded ISO standards For ISO/TS 21091:2005, item title is Health informatics — Directory services for security, communications and identification of professionals and patients; status code is 9599; successor is ISO 21091:2013; withdrawn / published date is 2005-12-13, recorded from its source on 2026-08-05. - **Identifier:** ISO/TS 21091:2005 _(verified: appears in the quote below)_ - **Item title:** Health informatics — Directory services for security, communications and identification of professionals and patients _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 21091:2013 - **Withdrawn / published date:** 2005-12-13 _(verified: appears in the quote below)_ ## What the source says > 35647,TS,,ISO/TS 21091:2005,"Health informatics — Directory services for security, communications and identification of professionals and patients","Informatique de santé — Services d'annuaires pour la sécurité, les communications et l'identification des patients et des professionnels",2005-12-13,1,['35.240.80'],ISO/TC 215,9599,,[51432],['en'],47,"

ISO/TS 21091:2005 defines minimal specifications for directory services for health care using the X.500 framework. This Technical Specification provides the common directory information and services needed to support the secure exchange of health care information over public networks. ISO/TS 21091:2005 addresses the health directory from a commu ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).