1999 CPT revisions.
Willard
D
D
D000043:Abstracting and Indexing / Q000145:classification* / Q000592:standards; D004194:Disease / Q000145:classification*; D004496:Education, Continuing; D006801:Humans; D008370:Manuals as Topic; D008499:Medical Records / Q000145:classification* / Q000592:standards; D014481:United States