Part I: Service or Severity of Illness CriteriaRead the definitions below for Intensity of Service and Severity of Illness, noting the differences between the two. Review the list of criteria in #1 through #10 which includes both Intensity of Service and Severity of Illness criteria, based on the definitions; identify which type each one is. Then, within this table, list the policy criteria in the appropriate column based upon whether they are Intensity of Service or Severity of Illness criteria.IS Criteria: Intensity of ServiceMeasures the level of intensity of treatment needed or resources used – “How much care do they need?”SI Criteria: Severity of IllnessA measure of how serious is the patient’s illness or condition – “How sick are they?”Policy:The following criteria indicate medical necessity and continued hospital stay: