Maintenance Activities necessary to support the use of a standard adopted by the Secretary, including technical corrections to an implementation specification, and enhancements or expansion of a code set. This term excludes the activities related to the adoption of a new standard or implementation specification, or modification to an adopted standard or implementation specification.'' [45 CFR 162.103] Related Terms: Code Set; Standard; Legislation Files Containing This Term: legislation/45CFR-160.103.html legislation/45CFR-162.103.html legislation/45CFR-162.1502.html legislation/45CFR-162.910.html legislation/45CFR-162.920.html legislation/45CFR-164.512.html