CDA has learned that due to a Delta Dental of California system error, crown procedure claims were erroneously processed and paid for, affecting approximately 350 self-funded employer groups between Oct. 13, 2018 and Jan. 10, 2019. Statements were sent to approximately 1,000 California dentists beginning the week of Oct. 21 seeking recoupment for procedure codes D2750-D2752 and D279-D2792.