US HITSP: C78: Immunization Content. The Immunization Document Component defines the immunization data content to be exchanged between healthcare entities such as immunization information systems, electronic medical records systems, personal healthcare record systems and other stakeholders. It is based upon the IHE Patient Care Coordination (PCC) Technical Framework Supplement 2008-2009, Immunization Content (IC), Trial Implementation Version 1.0. View the most current version as HTML here.