CVS’ billing practice on generics subject of suit SAN FRANCISCO — CVS Health Corp. deliberately overcharged some pharmacy customers for generic drugs by submitting claims to their insurance companies at inflated prices, according to a lawsuit filed Thursday in federal court in San Francisco.The suit says those inflated prices led to higher co-pays for customers that exceeded what they would have paid for the drugs if they had no insurance and participated in a CVS discount program.“We’ve seen people who pay $20 for a …