"Keeping up-to-date in this age of information overload can be difficult. But not anymore. Mobile Medica has a convenient, cost-effective solution - APPRISOR™. APPRISOR™ is a world class content delivery system specifically designed for medical organizations. In the APPRISOR™ system, Mobile Medica provides a single source for document creation and delivery via our robust and freely distributed document viewers for either Palm OS® or Microsoft Pocket PC handhelds. Each APPRISOR™ document can be read on both Palm OS® or Pocket PC OS systems, and even transferred between the two. APPRISOR™ supports Palm OS® 3.0 and above including OS 5 and Pocket PC 2002 on ARM, XScale, MIPS, or SH3 processors."
Link: http://www.apprisor.com/information.cfm
This site does require registration, however the downloads are free.
For registration go to: http://www.apprisor.com/information.cfm
For downloads go to: http://www.apprisor.com/dlselect.cfm
The Apprisor reader and the Common ICD9 Codes, 2004 Edition files may be downloaded at the same time. Clinical Practice Guidelines are also available at this site.