The Kentucky CJA 21 Authorization and Voucher for Expert and Other Services is a form used to request payment of services to an expert witness or other service provider in criminal proceedings in Kentucky. This form must be completed by the court-appointed attorney for the defendant and signed by the judge of the court. It authorizes and requests the payment of services for expert testimony, investigation, and other services provided by the expert or service provider. It also includes information on the name and address of the expert witness, the nature and scope of services provided, the amount of fees requested, the date of services, and the payment method. There are three types of Kentucky CJA 21 Authorization and Voucher for Expert and Other Services: the Initial Authorization and Voucher, the Final Authorization and Voucher, and the Amendment to Authorization and Voucher. The Initial Authorization and Voucher is used to initiate payment for expert and other services. The Final Authorization and Voucher is used to finalize payment for expert and other services. The Amendment to Authorization and Voucher is used to request a change in the amount of payment for services rendered.