Need guidance on staff training

I work in Radiation Oncology and am the only coder on staff in my office. We are a billing office and all other staff members are only billers, not coders. I have been tasked with training the billers on ICD-10 for our specialty. I have been in radiation therapy less than 2 years, and I do not know where to begin. The majority of my co-workers have been in their jobs a very long time and do not do well with changes. There is much discussion/controversy in the office as to whether the doctors should be responsible for choosing the diagnosis codes, or the billers. Currently the doctors select the appropriate diagnosis code(s) using the hospital EMR. All we do is bill using the ICD-9 and E&M CPT codes they select (the billers actually choose the CPT codes for therapy, not important here). The billers do not want to be responsible for choosing the diagnosis codes.

What is everyone else doing? Doctors are not coders, which is why coders exist in the first place. Whose responsibility is it to choose the correct diagnosis codes? My supervisor has mentioned hiring coders to code and keeping billers to bill, but I don't know if this is a reasonable approach with our office. It may be the soultion, I just don't have enough experience to determine this.

I am supposed to start training my billing co-workers on ICD-10 on Tuesday 4//21/15. I have no idea where to begin. I have searched for tools on AAPC but can find nothing except the full courses which is not what I need. We are radiation oncology and I need specific tools to teach billers in this specialty. Any guidance/advice/tools would be greatly appreciated.

Thank you for your time.

Need guidance on staff training