CH_CRL (v0.2.1)
This page is part of the CH-CRL (R4) (v0.2.1: STU) based on FHIR R4. This is the current published version. For a full list of available versions, see the Directory of published versions 
The data item indicates the presence or absence of tumour cells in the walls of venous blood vessels, as noted microscopically by the pathologist. Venous invasion (Variable number: 4.15) in 'NATIONAL CANCER DATA DICTIONARY, V 1.1, Part A, BASIC VARIABLES for Adults, Adolescents, and Children' see Nationale Krebsregistrierungsstelle > Partner im Gesundheitswesen > Information, Grundlagen und Datenstruktur zum KRG.
This code system http://fhir.ch/ig/ch-crl/CodeSystem/nkrs-venousinvasion defines the following codes:
| Code | Display | Definition |
| 0 | V0 | No venous invasion. |
| 1 | V1 | Microscopic venous invasion. |
| 2 | V2 | Macroscopic venous invasion. |
| 8 | VX | Venous invasion cannot be assessed. |