By now, everyone knows ICD-10 coding starts October 1, 2015.
Starting October 1, 2015, Medicare claims with dates of service after October 1, 2015 will only be accepted if they contain a valid ICD-10 code. The Medicare claims system will be programmed not to accept ICT-9 codes after September 30, 2015.
However, Medicare announced in a July 7, 2015 letter it will not deny physician on other practitioner claims based solely on incorrect specificity of ICD-10 coding, as long as the code used is from the right family, for 12 months, i.e., until September 31, 2016.
CMS is also providing these ICD-10 resources:
https://www.cms.gov/Medicare/Coding/ICD10/index.html?redirect=/ICD10
https://www.cms.gov/Medicare/Coding/ICD10/Downloads/MedicareProviderICD-10.pdf
https://www.cms.gov/Medicare/Coding/ICD10/Downloads/ICD10QuickStartGuide20150622.pdf
