The HIPAA Electronic Transactions and Code Sets rule requires most group health plans to obtain new health plan identifier numbers (HPIDs) by November 5, 2014.  While insurers will likely obtain the HPID on behalf of fully insured plans, the task of obtaining the HPID for a self-funded plan will fall upon the plan sponsor.  While the process is relatively simple, plan sponsors should begin identifying which group health plan arrangements are subject to the HPID requirement and communicating with plan vendors regarding the requirements.