KBS Clinical Terminology Standards: Terminology Services for Knowledge Based Systems includes terminology matching, code standardization, JLV matching, Clinical Health Data Repository (CHDR) Medication and Allergy mapping between the VHA and DoD, data harmonization efforts, terminology planning, and terminology modeling.  CHDR is a VA/DoD mechanism to share prescribed medications in a fashion sufficient to permit computation of drug-drug interactions in the receiving pharmacy systems.   CHDR requires clinical experts to match each agency’s medications and allergies maps (Allergy Reactants; Allergy Reactions; and Medications) to federally-approved standards (RxNORM, SNOMED-CT and UMLS) to enable cross-departmental Clinical Decision support (CDS). JPSys provides subject-matter experts to accomplish the required matchings to specified standards.