Except as allowed by paragraph (3) of this section, a CSU physician must discharge a voluntarily-admitted individual on the 14th day after the individual's admission, unless:(1) the individual's treating physician orders the individual's discharge before the 14th day;(2) the individual's treating physician orders the individual's transfer to other treatment or services, in accordance with §306.91 of this subchapter (relating to Transfers);(3) a physician, or physician-delegated PA or APRN, documents in the individual's medical record the medical necessity and clinical rationale for extending the length of stay beyond 14 days; or(4) an individual under 18 years of age was admitted under an order of Temporary Authorization, issued in accordance with Texas Family Code Section §35A.005(d), in which case the individual must be discharged by the tenth day after the date the order for temporary authorization is issued.