If a hospital receives notification from the Texas Health and Human Services Commission (HHSC) Utilization Review Department of an adverse decision regarding medical necessity of admission, days of stay, diagnosis related group (DRG) validation, or a final technical denial, the hospital may appeal to the HHSC Resolution Services, Medical/Administrative Appeals Unit. The written notification of adverse decision will set out the time frame within which the appeal must be received by the HHSC Resolution Services, Medical/Administrative Appeals Unit.