Starting Oct. 1, if you don't include an ICD-9-CM diagnosis code on your Part B claims, you probably won't get paid. It's all part of complying with the Health Insurance Portability and Accountability Act transactions and code sets standards, the Centers for Medicare & Medicaid Services explains in a June 6 program memorandum (B-03-045; http://cms.hhs.gov/manuals/pm_trans/B03045.pdf). The only exceptions to the rule - which otherwise applies to all professional claims - are claims submitted by ambulance suppliers. CMS offers more information on the new policy in a provider education article included in a July 11 program memo (B-03-046; http://cms.hhs.gov/manuals/pm_trans/B03046.pdf). In other recent program memoranda, CMS: