Diagnosis-Related GroupsLength of StayComorbidityPhylogenyProspective Payment SystemHospital CostsUnited StatesMolecular Sequence DataCosts and Cost AnalysisHealth Maintenance OrganizationsSpecies SpecificityMedicaidManaged Care ProgramsDNA FingerprintingMedicareDNA, BacterialSequence Analysis, DNAFee-for-Service PlansEvolution, MolecularBase SequenceRetrospective Studies