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Data element name

Sub data element name


Code System Owner

NameInternational System for Human Cytogenomic Nomenclature (ISCN)
Phone number
Code System Maintainer (Steward)Name
Email address
Phone number
Code System PublisherNameS. Karger AG
Email address
Phone number+41 61 306 11 11
AddressP.O Box, CH-4009 Basel (Switzerland)
Allschwilerstrasse 10, CH-4055 Basel
Code System NamesFormal name of the code systemInternational System for Human Cytogenomic Nomenclature (ISCN)
Short name of the code systemISCN
Code System Technical IdentifiersHTA-endorsed URI
HTA-endorsed OID2.16.840.1.113883.6.299
Other URIs
Other OIDs
Code System InformationLink

The International System for Human Cytogenetic Nomenclature (ISCN) was created by the International Standing committee on Human Cytogenetic Nomenclature to represent the outcome of cytogenetic tests. ISCN specifies the nomenclature to describe karyotypes, chromosome abnormalities, in situ hybridization, etc. ISCN provides a list of symbols and abbreviated terms in adjunction with a set of rules, which can be used in the description of chromosomes and chromosome abnormalities, such as p for short arm of chromosome, q for long arm of chromosome, cen for centromere, del for deletion, ish for in situ hybridization, and plus sign (+) for gain, etc. 
A LOINC code is created to represent "chromosome analysis results in ISCN expression". In HL7 v2 messages, this LOINC code is used in OBX-3 with a coded result (CWE data type) that will be sent in OBX-5. The value of the coded result is an ISCN expression, and ISCN will be the code system for the coded result. 

Arrangement or agreements with HL7 for use of content
Version management
Versioning is identified by the year of publication of the ISCN. The latest version is ISCN 20092020. Previous publications include ISCN 2009, ISCN 2005, ISCN 1995, and ISCN 1985, etc.
Code System Copyright, Intellectual Property and LicensingCopyright Statement"The content on the Website including but not limited to the content of ISCN 2020 in whole or in parts, the title, the logo, graphic designs or adverts are the intellectual property of S. Karger AG (Basel) or published with permission from the legal copyright owner. All rights are reserved.

Unless otherwise noted, no part of the content on the Website may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from Karger.

For further information or permission requests please see the explanations under Rights and Permissions."

Copyright Information
Intellectual Property Information
Licensing Information
HTA endorsement status (Draft, In review, Endorsed for use, Pending re-endorsement, Retired) ValueDraftEndorsed for use
Assignment date2022-01-2027
HTA review statusLast review date2022-01-27
Next review date2023-01-27
Information current as at (date)