Summary & Overview
HCPCS B4193: Parenteral Nutrition Premix, 52–73 g Protein
HCPCS Level II code B4193 denotes a compounded parenteral nutrition premix containing amino acids and carbohydrates with electrolytes, trace elements, and vitamins, formulated to deliver 52 to 73 grams of protein. This product is used when enteral nutrition is contraindicated or insufficient and is a critical component of inpatient and outpatient nutritional support programs. Nationally, parenteral nutrition codes like B4193 are important for billing complex, high-cost biologically active compounded solutions and for tracking utilization across acute, post-acute, and home infusion settings.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical context for compounded parenteral nutrition, coverage and reimbursement benchmarks, common billing practices, and recent policy or coding guidance affecting parenteral nutrition premixes. The publication outlines typical sites of service and highlights operational considerations for facilities and home infusion providers.
Data not available in the input for specific associated taxonomies, ICD-10 diagnoses, related codes, and detailed payer-specific reimbursement rates. The analysis focuses on national implications and practical billing context for clinicians, coding professionals, and revenue management teams.
Billing Code Overview
HCPCS Level II code B4193 describes a parenteral nutrition solution: compounded amino acid and carbohydrates with electrolytes, trace elements, and vitamins, including preparation, any strength, 52 to 73 grams of protein - premix. This code represents a compounded intravenous nutrition premix intended to provide balanced macronutrients and micronutrients for patients who require total or supplemental parenteral nutrition.
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Service type: Compounded parenteral nutrition premix (amino acids and carbohydrates with electrolytes, trace elements, and vitamins)
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Typical site of service: Hospital inpatient, hospital outpatient infusion centers, long-term acute care hospitals, skilled nursing facility, home infusion settings
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult hospitalized with inadequate enteral intake who requires full parenteral nutrition. For example, a 62-year-old patient with small bowel obstruction and short bowel syndrome after multiple resections is NPO and develops malnutrition with serum albumin decline and negative nitrogen balance. The nutrition support team (physician, pharmacist, and registered dietitian) assesses caloric and protein needs, orders a compounded parenteral nutrition premix containing 52–73 grams of protein with amino acids, carbohydrates, electrolytes, trace elements, and vitamins. Pharmacy compounds the B4193 premix under sterile conditions, labels quantities and additives, and prepares it for central venous administration. Nursing verifies the order, inspects the bag, performs pump programming, and administers via an existing central venous catheter. Daily monitoring includes vital signs, intake/output, serum electrolytes, glucose, liver function tests, and weight; the physician adjusts composition and duration based on metabolic response and complication surveillance such as catheter-related infection, hyperglycemia, or electrolyte disturbances.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Preservice, Intraservice, or Postservice? Usually primary service | When reporting a primary or standalone service in global situations where modifier clarifies primary encounter |