title: New ICD-9 codes take effect this month.
authors.forename: Kent J
authors.initials: KJ
authors.lastname: Moore
mesh_terms: D002318:Cardiovascular Diseases / Q000145:classification; D005194:Family Practice / Q000191:economics; D006801:Humans; D038801:International Classification of Diseases; D011295:Prenatal Care; D015895:Relative Value Scales