A fuzzified version of the Arden Syntax, called Fuzzy Arden Syntax, offering the inclusion of clinical concepts with unsharp boundaries into clinical decision support systems—as is intuitively done in many areas of medicine—was discussed, agreed upon, and positively balloted at the Health Level Seven (HL7) International Working Group Meeting in Vancouver/Canada which took place from 13 to 18 May 2012. The proposal for this augmentation was prepared by members of Medexter Healthcare; it was well-received and supported by the Arden Syntax working group of HL7 International. This extended definition of Arden Syntax will become Arden Syntax Version 2.9 in due time.