Summary & Overview
HCPCS B4158: Pediatric Enteral Formula, Nutritionally Complete
HCPCS Level II code B4158 designates a pediatric enteral formula that is nutritionally complete with intact proteins, fats, carbohydrates, vitamins and minerals, and may include fiber and/or iron. It is administered via an enteral feeding tube and billed in units where 100 calories = 1 unit. This code matters nationally because enteral nutrition is a critical component of pediatric care for children who cannot meet nutritional needs orally; accurate coding impacts coverage, supply procurement, and continuity of home or outpatient nutrition therapy.
Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for pediatric enteral formulas, how units are defined for billing, payer coverage considerations, and common administrative issues encountered with enteral supply claims. The publication summarizes benchmarks and policy-relevant details for national audiences, including typical sites of service and coding implications for home and outpatient enteral feeding programs.
The report does not provide individualized clinical guidance or state-specific rules. Data not available in the input are explicitly noted where applicable.
Billing Code Overview
HCPCS Level II code B4158 describes an enteral formula for pediatrics that is nutritionally complete with intact nutrients, including proteins, fats, carbohydrates, vitamins and minerals. The product may include fiber and/or iron and is administered through an enteral feeding tube. Billing for this product is measured in units where 100 calories = 1 unit.
Service type: Enteral nutrition supply for pediatric patients
Typical site of service: Home health care or outpatient feeding via enteral tube (enteral feeding administration sites such as patient home, ambulatory infusion centers, or pediatric specialty clinics)
Clinical & Coding Specifications
Clinical Context
A common pediatric outpatient or home-care scenario involves a medically fragile infant or child who requires long-term enteral nutrition due to inadequate oral intake, congenital anomalies, or neurologic impairment. A typical patient is a 6-month-old with severe chronic aspiration risk and failure to thrive who receives a gastrostomy tube (G-tube) for ongoing nutrition. Enteral formula B4158 (pediatric, nutritionally complete, intact nutrients) is ordered by the pediatrician or pediatric gastroenterologist and dispensed by a DME supplier or pharmacy. Nursing or trained caregivers administer measured volumes through the enteral feeding tube via bolus or continuous pump feeds. Clinical workflow: the physician documents medical necessity and calorie goals in the chart; a prescription specifying B4158 units (100 calories = 1 unit) is sent to the supplier; the supplier verifies coverage, documents delivery and units, and bills the payer using B4158 with appropriate modifier(s). Coordination includes nutritionist/dietitian input for caloric prescription, home nursing education, and periodic follow-up visits to adjust formula volume and address tolerance or tube complications. Typical sites of service are the outpatient clinic, home health setting, and durable medical equipment (DME) supplier for dispensing and billing.
Coding Specifications
| Modifier | Description | When to Use |
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