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 
Perineural invasion is the process of neoplastic invasion of nerves.
This value set includes codes from the following code systems:
http://fhir.ch/ig/ch-crl/CodeSystem/nkrs-perineuralinvasion