HCPCS Level II code B5000 describes a compounded parenteral nutrition solution containing amino acids and carbohydrates with electrolytes, trace elements, and vitamins (renal-specific formulations such as Renal-Aminosyn-RF, Nephramine, Renamine-Premix). This code represents parenteral nutrition compound preparation provided as an intravenous therapeutic solution, typically billed for compounded PN admixture services administered in hospital inpatient settings, hospital outpatient infusion centers, and skilled nursing facilities when renal-specific amino acid solutions are required.