431.1002—Recoveries.
        
        (a) Medicaid.
         States must return to CMS the Federal share of overpayments based on medical and processing errors in accordance with  section 1903(d)(2) of the Act and related regulations at  part 433, subpart F of this chapter. Payments based on erroneous Medicaid eligibility determinations are addressed under  section 1903(u) of the Act and related regulations at  part 431, subpart P of this chapter.
    
    
        
        (b) CHIP.
         Quarterly Federal payments to the States under Title XXI of the Act must be reduced in accordance with  section 2105(e) of the Act and related regulations at  part 457, subpart B of this chapter.