Talk:List of ICD-9 codes
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NOS=not otherwise specified--a generic catchall also you will see NEC=not elsewhere classified
somesections will have NEC followed by NOS just incase you didn' find the NEC ambiguous enough!
[edit] NOS
What does NOS mean? By the way, it is now linked to the NOS disambiguation page (links shoud not be linked disambiguation pages), and I find nothing good in it. —Preceding unsigned comment added by Cate (talk • contribs) 05:50, 9 August 2005 (UTC)