I really don't want to rain on anyone's parade, but as a retired Army nurse working in health care quality in the civilian sector for the past 21 years, I can tell you that 35-year-old coding training is out of date. As mentioned by a previous poster, ICD-10 was mandated for Federal fiscal year 2015 (beginning 10/01/2014), but was delayed (probably a year) just last week by a bill the President signed. Where ICD-9 numbered around 15,000 codes, ICD-10 bumps that up to around 70,000 codes. Add to that the fact that DRGs weren't even in use for billing 35 years ago and the advent of the electronic medical record, there would be some serious catching-up to do. PM me if I can be of any help.