; and (ii) by inserting after paragraph (4) the following: (5) Reporting of pediatric health care measures Beginning not later than January 1 of the calendar year that begins on or after the date that is 2 years after the date of enactment of the Medicaid and CHIP Quality Improvement Act of 2017 , and annually thereafter, the Secretary shall require States to use the measures and approaches identified in paragraph (4) to report on the initial core child health care quality measures established under this subsection and as such measures subsequently are updated under subsection (b)(5). Such reporting shall be stratified by delivery system, including managed care organizations under section 1932, benchmark plans under sections 1937 and 2103, primary care case management services providers described in section 1905(t), health care services in fee-for-service settings, and other delivery systems, except that the Secretary may determine that reporting on certain measures should not be stratified by delivery system because such stratification would not be feasible or the delivery systems are not comparable with respect to the application of such measures. In addition to the stratification required under the previous sentence, the Secretary shall have the discretion to further stratify reporting on certain measures based on factors such as eligibility category, income level, or other differentiating factors that could have an impact on the comparability of the measure. ; and (B) in subsection (c)— (i) in paragraph (1)(A), by striking measures described in subparagraphs (A) and (B) of subsection (a)(6) and inserting the core measures described in subsection (a), as revised in accordance with subsection (b)(5) ; (ii) in paragraph (1)(B), by inserting before the period the following: , or comparable primary care case management services providers described in section 1905(t), as well as healthcare services furnished in fee-for-service settings or other delivery systems