HL7 Terminology (THO), published by HL7 International - Vocabulary Work Group. This guide is not an authorized publication; it is the continuous build for version 6.1.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/UTG/ and changes regularly. See the Directory of published versions

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CodeSystem: International System for Human Cytogenomic Nomenclature (ISCN)

Official URL: https://iscn.karger.com				Version: 1.0.1
Active as of 2022-06-07			Responsible: S. Karger AG	Computable Name: ISCN
Other Identifiers: OID:2.16.840.1.113883.6.299
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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.

This Code system is referenced in the content logical definition of the following value sets:

• This CodeSystem is not used here; it may be used elsewhere (e.g. specifications and/or implementations that use this content)