I'm understanding Brian's point of view (populating the problem list by using ICD-9 entries), but I'm not loving the ICD-9 code search engine. It's very very weak. But it's in the format of every type of ICD-9 search engine I've ever seen. The codes are written as they appear in the ICD-9 text book. This is biller/coder language, NOT doctor lingo. Try looking for 'sinusitis'.....good luck.