; and (H) to approve service nominations for commanders or directors of military medical treatment facilities. . (b) Combat support responsibilities Subsection (d)(2) of such section is amended by adding at the end the following new subparagraph: (C) Ensuring that the Defense Health Agency meets the military personnel readiness requirements of the senior military operational commanders of the military installations. . 712. Organizational framework of the military healthcare system to support medical requirements of the combatant commands (a) Organizational framework required The Secretary of Defense shall, acting through the Director of the Defense Health Agency, implement an organizational framework for the military healthcare system that most effectively implements chapter 55 of title 10, United States Code, in a manner that maximizes interoperability and fully integrates medical capabilities of the Armed Forces in order to enhance joint military medical operations in support of requirements of the combatant commands. (b) Implementation (1) Commencement Implementation of the organizational framework required by subsection (a) shall commence not later than October 1, 2018. (2) Phased implementation Implementation of the organizational framework may occur in phases, as considered appropriate by the Director. (3) Completion The organizational framework shall be fully implemented by not later than October 1, 2020. (4) Compliance with certain requirements The organizational framework, as implemented, shall comply with all requirements of section 1073c of title 10, United States Code, except for the October 1, 2018, implementation date specified in such section. (c) Health-readiness regions in CONUS required The organizational framework required by subsection (a) shall meet the requirements as follows: (1) Health-readiness regions There shall be not more than three health-readiness regions established in the continental United States. (2) Leader Each region under paragraph (1) shall be led by a commander or director