Everyone in the industry is well aware of ICD-10 and we've been using it extensively for years. It's only one small piece of the puzzle and not nearly sufficient on its own. Just within the terminology / ontology space most clinical systems will have to support a wide range of others that are mostly orthogonal to ICD-10 such as CPT, RxNorm, LOINC, SNOMED-CT, etc. And that's not even getting into issues with message and document formats.