Section 4.03 - Clinical Categories of Advanced Practice Registered Nurses(1) Board recognized APRN clinical categories and abbreviations include:(a) Certified Registered Nurse Anesthetist (CRNA);(b) Certified Nurse Midwife (CNM);(c) Certified Nurse Practitioner (CNP);(d) Clinical Nurse Specialist (CNS); and(2) Psychiatric Nurse Mental Health Clinical Specialist (PNMHCS). This category corresponds to M.G.L. c. 94C, §§ 1, 7 and 9 and M.G.L. c. 112, §§ 80E, and includes the advanced practice registered nurse clinical category Psychiatric Clinical Nurse Specialist (PCNS).Amended by Mass Register Issue 1266, eff. 8/1/2014.Amended by Mass Register Issue 1446, eff. 6/10/2021.Amended by Mass Register Issue 1451, eff. 9/3/2021.