HL7 Australia Implementation Guide:

This page is part of the RCPA Cancer Protocols IG (v0.1.0: Release 1 Draft) based on FHIR R3. . For a full list of available versions, see the Directory of published versions

CrcTumourStageN

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CrcTumourStageN

Lists the options for Colorectal cancer tumour stage N

This code system http://fhir.hl7.org.au/fhir/rcpa/CodeSystem/crc-tumour-stage-n defines the following codes:

CodeDisplayDefinition
nx NX Regional lymph nodes cannot be assessedNX Regional lymph nodes cannot be assessed
n0 N0 No regional lymph node metastasisN0 No regional lymph node metastasis
n1a N1a Metastasis in one regional lymph nodeN1a Metastasis in one regional lymph node
n1b N1b Metastasis in 2-3 regional lymph nodesN1b Metastasis in 2-3 regional lymph nodes
n1c N1c Tumour deposit(s) in the subserosa, mesentery, or nonperitonealised pericolic or perirectal tissues without regional nodal metastasisN1c Tumour deposit(s) in the subserosa, mesentery, or nonperitonealised pericolic or perirectal tissues without regional nodal metastasis
n2a N2a Metastasis in 4-6 regional lymph nodesN2a Metastasis in 4-6 regional lymph nodes
n2b N2b Metastasis in 7 or more regional lymph nodesN2b Metastasis in 7 or more regional lymph nodes