The National Certifying Board of Otorhinolaryngology and Head-Neck Nurses (NCBOHN) endorses the concept of voluntary, periodic certification by examination for all otorhinolaryngology and head-neck registered nurses. Certification is one part of a process called credentialing. It focuses specifically on the individual and is an indication of current competence in a specialized area of practice. Board certification in otorhinolaryngology and head-neck nursing is highly valued and provides formal recognition of basic otorhinolaryngology and head-neck nursing knowledge.