CMS has finished the third and final round of end-to-end testing for claims containing ICD10 codes. The tests results included an 87% acceptance rate of the claims submitted. Only 1.8% of the claims were rejected because of the new codes, 2.6% were rejected because of invalid ICD9 codes. These rejection rates are about normal for the current production claims processing environment.
The minor problems discovered by CMS in their system after round two of tests in April appear to be corrected. On the surface it would appear that the industry, or at least CMS, is ready to process these claims, however, these statistics are deceiving.