Washington Revised Code Title 72. State Institutions § 72.09.540. Inmate name change--Limitations on use--Penalty

The department may require an offender who obtains an order under RCW 4.24.130 to use the name under which he or she was committed to the department during all official communications with department personnel and in all matters relating to the offender's incarceration or community supervision. An offender officially communicating with the department may also use his or her new name in addition to the name under which he or she was committed. Violation of this section is a misdemeanor.