On October 1, 2015, Medicare transitioned to using ICD-10 codes for processing claims. According to the Centers for Medicare & Medicaid Services (CMS), claims have been normally processing since this rollout. Approximately 10% of claims are being rejected, with less than 0.10% rejected as a result of invalid ICD-10 codes.
This rate is promising, especially to skeptics who were unsure about the change. These rejection numbers have been comparable with previous data. Before the transition, CMS also reported that the agency would not reject Medicare claims as long as the correct ICD-10 code family was selected.
These findings were reported by the Centers for Medicare & Medicaid Services on October 2015.