Preface This book constitutes the refereed proceedings of the First Joint Workshop on AI in Health (AIH18), held in Stockholm, Sweden, on July 13 and 14. This workshop consolidates the Collaborative Agents Research & Development, the Joint International Workshop KR4HC-ProHealth and Workshop on Artificial Intelligence For Healthcare (AI4HC) in a single event, co-located with the Fed- erated AI Meeting. It aims to bring together communities from Machine Learning and Artificial Intelligence applied in Health and Medicine; in particular it fos- ters discussion and collaboration among the communities from the constituting workshops: CARE1 , KR4HC2 , ProHealth3 , AID4 , A2HC5 and CBRHS6 , which were previously co-located with different conferences in the area, most nobably previous editions of AAMAS, ICCBR, ICML, IJCAI and ECAI. The workshop aims to discuss AI technologies with medical applications, with a particular focus on the following three tracks: – Agents in Healthcare – Data Science and Decision Systems in Medicine – Knowledge Management in Healthcare AIH provides a discussion forum for the most recent and innovative work on the study and application of AI technologies in compelling healthcare scenarios. It covers a wide spectrum of applications, from those aimed at easing and support- ing healthcare professionals’ work to those devoted to improving patients’ lives. The event discusses computational models, social computing, and agent-based solutions applied to practical solutions that address topics related to Healthcare. AIH received 42 submissions through the workshop website. All submissions were reviewed by at least three different reviewers, and the program committee subsequently selected 14 full and 12 short presentations. We want to say thank you to all the volunteers who made the workshops possible by helping to organize and peer review the submissions, and to Easy- Chair for the conference management system, and to CEUR-WS for providing the publishing platform. 1 Collaborative Agents Research & Development 2 Knowledge Representation for Healthcare 3 Process-oriented Information Systems in Healthcare 4 Artificial Intelligence in Diabetes 5 Agents Applied in Healthcare 6 Case-Based Reasoning in the Health Sciences Organization Committee – Isabelle Bichindaritz – Christian Guttmann – Pau Herrero – Fernando Koch – Andrew Koster – Richard Lenz – Beatriz López Ibáñez – Cindy Marling – Clare Martin – Sara Montagna – Stefania Montani – Manfred Reichert – David Riaño – Michael I. Schumacher – Annette ten Teije – Nirmalie Wiratunga Program Committee – Frank Van Harmelen – Agnar Aamodt – Syed Sibte Raza Abidi – Klaus-Dieter Althoff – Luca Anselma – Josep Lluis Arcos – Joseph Barjis – Davide Calvaresi – Michel Dojat – Aldo Franco Dragoni – Néstor Darı́o Duque Méndez – Alec Holt – David Isern – Stefan Jablonski – Vassilis Koutkias – Lenka Lhotska – Jean Lieber – Mar Marcos – Antonio Moreno – Juan Carlos Nieves – Øystein Nytrø – Stefan Pantazi – Hugo Paredes – Mor Peleg – Petra Perner – Luigi Portinale – Tiago Primo – Sadiq Sani – Rainer Schmidt – Brigitte Seroussi – Jaime Sichman – Maria Taboada – Paolo Terenziani – Ingo J. Timm – Eloisa Vargiu – Olga Vorobieva – Dongwen Wang – Szymon Wilk