Tip: Avoid using a signature stamp. Learning the ins and outs of what constitutes a compliant handwritten signature can be tricky, but isn't impossible. Compare your charts to these tips from Judith Blaszczyk, RN, CPC, ACS-PM, of Auditing for Compliance and Education in Leawood, Kan., and Marvel Hammer, RN, CPC, CCS-P, PCS, ASC-PM, CHCO, owner of MJH Consulting in Denver, Co., to determine if your group needs to update its signature strategy.