HCPCS Level II code B4164 designates a home-mix parenteral nutrition solution composed of dextrose (carbohydrates) at concentrations of 50% or less, measured at 500 ml per billing unit. This code is used to bill the carbohydrate component of parenteral nutrition provided in the home infusion setting and is relevant for payers managing chronic nutritional support and transitional care from inpatient to home. Nationally, accurate coding of parenteral nutrition components affects coverage determinations, authorization workflows, and cost management for long-term home infusion therapy.

Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of billing context, common modifiers used with HCPCS Level II codes, typical sites of service, and how this code fits into the broader home infusion service line. The publication also summarizes benchmarking considerations, coding nuances for component-based parenteral nutrition billing, and policy or coverage topics that commonly affect reimbursement and authorization for home-administered nutritional therapy.

Data not available in the input: associated taxonomies, specific ICD-10 diagnoses linked to this code, related codes, and detailed service-line placement.