Computer glitches and human error still causing insurance headaches for Californians

Since California expanded health coverage under the Affordable Care Act, a large number of people have been

between Covered California, the state’s marketplace for those who buy their own insurance, and Medi-Cal, the state’s Medicaid program for low-income residents.

Small income changes can cause people’s eligibility to shift, but when bad information is typed into a computer system shared by the two programs — or…