Health Interoperability is a very timely topic in the USA in large part because of the HITECH act and the huge amount of tax dollars that are going for Electronic Health Records and Information exchanges. Interoperability is impossible without sophisticated standards for both a grammar and vocabulary for health care that can be semantically interpreted by machines. HL7 V3 RIM is the grammar, and SNOMED-CT is the vocabulary that are needed accomplish the goal of semantic interoperability.
Before this book, a newcomer would have to read thousands of pages of white papers from HL7, IHE, and IHTSDO (International Standards Development Organizations), and attend meetings for years before seeing how these non trivial standards work together.
I'm involved in projects at Kaiser Permanente that rely on SNOMED-CT and HL7. Most of our project managers, or even physician leaders in the organization are not experts in UML, XML, HL7, CDA, or SNOMED. They do not have the opportunity to spend hours reading separate books, attending tutorials or otherwise obtaining the knowledge in this book in an efficient way.
Of course if you really want to know UML, or XML or any of these subjects in great depth, there are "better books" available. But this is the only book that put's it all together. I find it an advantage that it is under 300 pages. An interested person can read this book in just a few days, and will then know what otherwise would have been an epic effort to learn. I have given separate talks on many of these subjects, but in any single talk you could not hope to cover all of the material in this book.
I have just ordered copies of this book to distribute to my project managers and developers.