Talk:List of ICD-9 codes 680–709: diseases of the skin and subcutaneous tissue

Source of information?
I'm a bit new to Wiki talk, so please be gentle. Am I missing the source for the information of this page? ...clearly there was a source where this information (at least the codes themselves) was taken from. — Preceding unsigned comment added by Matannnn (talk • contribs) 11:41, 13 January 2018 (UTC)