"[S]ince the publication of the HPID final rule, the nation's health care system has experienced sweeping changes, including implementation of the [ACA's] marketplaces.... [HHS is] requesting information regarding ... [1] The HPID enumeration structure outlined in the HPID final rule, including the use of the CHP/SHP and OEID concepts. [2] The use of the HPID in HIPAA transactions in conjunction with the Payer ID. [3] Whether changes to the nation's health care system, since the issuance of the HPID final rule published September 5, 2012, have altered your perspectives about the function of the HPID."  MORE >>