Prison Litigation Relief Act of 1993

Prison Litigation Relief Act of 1993 - Amends the Federal judicial code to require a district court, in any action challenging the constitutionality of conditions of confinement in any correctional instituion, that finds that a condition of confinement violates the Constitution, to narrowly tailor any relief to fit the nature and extent of the violation and to make an order no more intrusive than necessary to remedy the violation.

Denies the court jurisdiction to: (1) impose a ceiling on the population of any institution or to require any adjustment of the release dates of inmates; or (2) prohibit the use of tents or prefabricated structures for housing inmates.

Specifies that: (1) no consent decree in any such action shall provide relief greater than the minimum required to bring conditions of confinement into substantial compliance with the Constitution; and (2) in entering a consent decree, the court shall make a written finding to that effect (permits the court to recommend changes if it appears that the relief provided is greater than the minimum required).

Permits the court, upon motion of a defendant at any time, to conduct a hearing on whether such an order or decree should be modified in light of: (1) changed factual circumstances; (2) a change or clarification of the governing law; (3) a succession in office of an official responsible for having consented to a decree; (4) the Government's financial constraints or any other matter affecting public safety or the public interest; or (5) specified grounds under the Federal Rules of Civil Procedure.

Directs the court: (1) to conduct such a hearing if the motion was filed more than one year after the date of the order or decree or the date on which the last previous modification hearing was conducted, whichever is later; and (2) if the court denies a motion to modify such an order or consent decree, to make a written finding that the relief provided is no greater than the minimum required.