Summary & Overview
HCPCS B4222: Parenteral Nutrition Supply Kit, Home Mix, Per Day
HCPCS Level II code B4222 denotes a daily parenteral nutrition supply kit prepared as a home mix for patients receiving intravenous nutrition at home. Nationally, reimbursement and coverage for home infusion supplies influence access to long-term parenteral nutrition, care coordination for complex chronic conditions, and the economics of home health and infusion providers.
Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication summarizes payer coverage approaches, common modifiers used with infusion supply claims, and the clinical and operational context for home-mix parenteral nutrition kits.
Readers will find: payer coverage considerations and common billing practices; benchmarks for claim submission and coding consistency; clinical context on when home-mix parenteral nutrition kits are used; and policy and billing updates that affect home infusion services. The material is tailored for billing professionals, home infusion providers, and payer policy analysts seeking concise guidance on coding and service definition for HCPCS Level II code B4222.
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Billing Code Overview
HCPCS Level II code B4222 describes a parenteral nutrition supply kit; home mix, per day. This code represents a daily kit supplied for parenteral nutrition that is prepared as a home-mix formulation, intended to support patients receiving intravenous nutrition outside the acute inpatient setting.
Service type: Parenteral nutrition supply kit (home mix), daily supply
Typical site of service: Home infusion therapy / patient residence
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Clinical & Coding Specifications
Clinical Context
A typical patient is an adult with chronic intestinal failure, severe malabsorption, or postoperative ileus who requires home parenteral nutrition (HPN) delivered as a daily, customized sterile admixture. The patient often has a tunneled central venous catheter or implanted port placed during an acute hospitalization and is discharged home with an HPN plan coordinated by a physician nutrition support team, home infusion pharmacy, and home health nursing.
The clinical workflow begins with a physician or nutrition support team assessment documenting indications, daily macronutrient and micronutrient goals, and vascular access status. A home infusion pharmacy prepares the daily sterile parenteral nutrition supply kit (B4222) according to the individualized prescription (volume, dextrose, amino acids, lipids, electrolytes). A home health nurse provides training to the patient or caregiver on catheter care, infusion pump use, aseptic handling of the B4222 kit, and troubleshooting. Daily administration typically occurs at home using an ambulatory infusion pump or gravity set; nursing or telehealth follow-up occurs frequently early in the transition from hospital to home to monitor weight, electrolytes, liver function tests, and catheter complications. Durable medical equipment (infusion pump), supplies (tubing, dressings), and medication components (lipid emulsions, amino acid/dextrose solutions) are billed separately where applicable. Documentation includes the PN prescription, compounding instructions, daily supply kit usage, patient/caregiver training, and any home nursing visits or complications such as catheter-related bloodstream infection or metabolic derangements.
Coding Specifications
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