The ICD-9-CM Volumes 1 and 2 for physicans is used for physician billing and the ICD-9-CM Volumes 1 2, and 3 for hospitals and or facilites is utilized for hospital, home health service, nursing home and hospice billing. The products from AMA, Ingenix, PMIC and Unicor provide complete official coding guidelines, summary of medical code changes for the current year, intuitive symbols and color-coded bars highlight all Medicare code edits crucial to correct reimbursement , valid three digit code table, and fourth and fifth digit requirement symbols, clinically oriented diagnosis definitions and illustrations plus age and sex edits