CSEP Professional Membership (Certification) ReinstatementAll CSEP professional memberships (CSEP CPT and CSEP CEP) must be renewed every year by March 31. From March 31 to May 31, lapsed certified memberships may be renewed with a late fee. If you have not renewed your membership by May 31, it is expired and you cannot renew it. However, CSEP professional members whose membership has expired within the prior three membership years, and who have not previously had their membership reinstated, may submit an