In writing about nursing and looking at nursing blogs I realised that I was using language and terminology that belonged to nurses. On further investigation I find that there are nine classification schemes that classify the work of nurses. Check out the American Nurses Association page on Nursing Classification .  I have been reading an article called Towards Standard Classification Schemes for Nursing Language – dated 1994 which is about four schemes that were forwarded to the NLM for inclusion in the Unfied Medical Language System. I also remember the Kardex system nurses used for recording patient information.