See Resource 1, CDC Guideline for Prescribing Opioids for Chronic Pain, for lots of useful resources.
I found Resource 2 not helpful at all. I leave it in the list just to remind me not to read it again.
Resources 3 and 4 are for Indiana physicians.
(1) CDC Guideline for Prescribing Opioids for Chronic Pain
(2) -Not Helpful For Me- Responsible, Safe, and Effective Prescription of Opioids for Chronic Non-Cancer Pain: American Society of Interventional Pain Physicians (ASIPP) Guidelines [PubMed Abstract] [Full Text PDF]. Pain Physician. 2017 Feb;20(2S):S3-S92.
(3) Indiana Pain Management Prescribing Final Rule [Full Text PDF] Adopted by the Indiana Medical Licensing Board September 25, 2014. Summary created by the Indiana State Medical Association – Updated October 25, 2016
(4) CONTROLLED SUBSTANCE PRESCRIPTION REQUIREMENTS (Indiana) Accessed 5-28-2017. [HTML] Indiana Professional Licensing Agency.