(a) HHSC selects TMRP cases for review by a statistically valid random sampling methodology and/or focused case selection. Cases consist of paid inpatient claims for diagnosis-related groups (DRGs), which may include:(1) readmissions up to 30 days;(2) ambulatory surgical procedures billed on inpatient claims;(3) questionable admissions or claims coding identified by other entities;(4) admissions identified through HHSC's quality review program as potential quality of care concerns;(5) DRG payments made to freestanding rehabilitation facilities;(6) day or cost outlier payments; or(7) any other DRG or claims submission errors.(b) HHSC selects TEFRA and facility-specific per diem methodology cases for review by a statistically valid random sampling methodology and/or focused case selection. Cases consist of paid inpatient claims for admissions to children's hospitals and freestanding psychiatric facilities.