Use of SterilisationTypeCode version 2 code list requires to use the codes defined in the code list.
cac:AdditionalItemProperty[normalize-space(cbc:ValueQualifier) = 'gs1:SterilisationTypeCode']/cbc:Value
some $code in tokenize('AUTOCLAVE BETA_RADIATION CHLORINE_DIOXIDE DRY_HEAT ELECTRON_BEAM_IRRADIATION ETHANOL ETO_ETHYLENE_OXIDE FORMALDEHYDE GAMMA_RADIATION GLUTARALDEHYDE HIGH_INTENSITY_OR_PULSE_LIGHT HIGH_LEVEL_DISINFECTANT HYDROGEN_PEROXIDE LIQUID_CHEMICAL MICROWAVE_RADIATION NITROGEN_DIOXIDE OZONE PERACETIC_ACID PLASMA SOUND_WAVES SUPERCRITICAL_CARBON_DIOXIDE UNSPECIFIED UV_LIGHT', '\s') satisfies $code = normalize-space(.)