; or (B) protect the public health. (2) Modifications after submission of report After the date on which the report described in subsection (c) is submitted, the Attorney General, in coordination with the Secretary, may modify the number of days described in subsection (a)(5). (3) Minimum number of days Any modification under this subsection shall be for a period of not less than 7 days. . (b) Study and report Not later than 2 years after the date of enactment of this section, the Comptroller General of the United States shall conduct a study and submit to Congress a report on access to and potential diversion of controlled substances administered by injection, implantation, or through the use of an intrathecal pump. (c) Technical and conforming amendment The table of contents for the Comprehensive Drug Abuse Prevention and Control Act of 1970 is amended by inserting after the item relating to section 309 the following: Sec. 309A. Delivery of a controlled substance by a pharmacy to an administering practitioner. . IV Treatment and recovery 401. Comprehensive opioid recovery centers (a) In general Part D of title V of the Public Health Service Act is amended by adding at the end the following new section: 550. Comprehensive opioid recovery centers (a) In general The Secretary, acting through the Assistant Secretary for Mental Health and Substance Use, shall award grants on a competitive basis to eligible entities to establish or operate a comprehensive opioid recovery center (referred to in this section as a Center ). A Center may be a single entity or an integrated delivery network. (b) Grant period (1) In general A grant awarded under subsection (a) shall be for a period not more than 5 years. (2) Renewal A grant awarded under subsection (a) may be renewed, on a competitive basis, for additional periods of time, as determined by the Secretary. In determining whether to renew a grant under this paragraph, the Secretary shall consider the data submitted under subsection (h). (c) Minimum number of grants The