; (B) overlaid records; (C) instances of multiple matches found; and (D) mismatch rates within the same healthcare organizations and provider systems. (2) Review and update In consultation with health care providers, vendors of electronic health records and health information technology, patient groups, and other relevant stakeholders, the Secretary shall review and update the definition and standards developed under paragraph (1), as appropriate, not less frequently than once every 3 years to ensure that such definition and standards are consistent with updates and improvements in technologies and processes. (b) Development of a standard data set To improve patient matching (1) In general Not later than 180 days after the date of enactment of this section, subject to paragraph (2), the National Coordinator shall review the current data set in the United States Core Data for Interoperability and identify, define, and adopt the minimum data set needed to support the adoption of patient matching by entities, including health care providers, developers of health care information technology or certified health IT, or health information networks of exchange, at a rate of 99.9 percent. The National Coordinator shall include such minimum data set in the United States Core Data for Interoperability. (2) Development of data standards in United States core data for interoperability For purposes of improving interoperable health exchange, not later than 1 year after defining the minimum data set described in paragraph (1), the National Coordinator shall create, update, or adopt data standards for the data elements identified in the minimum data set and incorporate such standards into the United States Core Data for Interoperability. (3) Consultation required In identifying and defining the minimum data set described in paragraph (1) and creating, updating, or adopting data standards described in paragraph (2), the National Coordinator shall consult with— (A) health care providers; (B) vendors of electronic health records