Iowa Code § 229.30
A judgment or order of hospitalization or commitment by a court of competent jurisdiction of another state or the District of Columbia, under which any person is hospitalized or placed in a facility operated by the United States department of veterans affairs or another agency of the United States government, shall have the same force and effect with respect to that person while the person is in this state as the judgment or order would have if the person were in the jurisdiction of the court which issued it. That court shall be deemed to have retained jurisdiction of the person so hospitalized or placed for the purpose of inquiring into that person's mental condition and the need for continued hospitalization or care and custody, as do courts in this state under section 229.28. Consent is hereby given to the application of the law of the state or district in which is situated the court which issued the judgment or order as regards authority of the chief officer of any facility, operated in this state by the United States department of veterans affairs or another agency of the United States government, to retain custody, transfer, place on convalescent leave or discharge the person so hospitalized or committed.
Iowa Code § 229.30
2009 Acts, ch 26, §12