This form is effective for one (1) year from date of signature. Instructions for completing this form: 1.Download and save this form on your computer before completing it. 2. The Prior Authorization (PA) unit at AHCCCS authorizes specific services prior to delivery of medical related services. PA request status can be viewed online. Find out how to submit a public records request to the MCAO Custodian of Records. Please click on the form, fill it out and send it in to us. If you have any questions, you can call (520) 316-6800. Fax to: (602) 876-0056. Visit the DCS letter page for more information.