In this Article, unless otherwise specified:
1. "Admitting diagnosis" means the reason an individual is admitted to a hospital.
2. "DRG" means Diagnosis Related Group, a type of prospective payment system used in billing for inpatient episodes of care.
3. "HIPPS" means the Health Insurance Prospective Payment System, a type of prospective payment system used by specific health care institutions, such as rehabilitation hospitals, for billing for services provided by the health care institutions.
4. "Inpatient discharge report" means a document that meets the requirements of A.R.S. § 36-125.05 and contains the information required in R9-11-402.
5. "Length of stay" means the total number of calendar days for a specific episode of care, from the date of admission to the date of discharge.
Ariz. Admin. Code § R9-11-401