HCPCS code B4160: Enteral formula, for pediatrics, administered through an enteral feeding tube, 100 calories

## **HCPCS code B4160 documentation requirements** For services billed with HCPCS code B4160 to be covered, comprehensive documentation is required in the patient's medical record. The documentation must establish the medical necessity for the specific formula. Key documentation requirements generally include: - **Diagnosis**: The patient's diagnosis or underlying condition must necessitate enteral nutrition. Conditions often include malnutrition, chronic illnesses affecting nutrient absorption (like cystic fibrosis or inflammatory bowel disease), or post-surgical recovery. - **Medical necessity**: The documentation must clearly state why the patient requires tube feeding. This includes a description of why they cannot be adequately nourished orally. - **Need for a specialized formula**: Since B4160 is a specialized code for a calorically dense formula, the medical record must justify why a standard pediatric formula (e.g., B4158) is not sufficient for the patient's metabolic needs. This might include documentation of other formulas that were tried and failed or were ruled out. - **Physician's order**: There must be a written order from a physician for the specific type and quantity of formula, as well as the duration of use. For some payers, a Written Order Prior to Delivery (WOPD) is required before the item is delivered. - **Nutritional assessment**: The record should include a nutritional assessment that justifies the medical need for the high-calorie, nutritionally complete formula. This often includes height, weight, and clinical course (e.g., worsening or improvement of the condition).

## **B4160 billing requirements** Billing with B4160 requires adherence to specific guidelines to ensure accurate reimbursement. - **Units**: The code is billed in units of 100 calories. You must calculate the total calories provided and divide by 100 to determine the number of units to bill. For example, a 240 mL can of formula with 1.5 kcal/mL contains 360 calories, which would be billed as 3.6 units (or rounded to 4 units, depending on payer policy). Always verify the specific payer's rounding rules. - **Modifiers**: Depending on the payer and the specific situation, certain modifiers may be required to indicate the location of service or other billing specifics. - **Prior authorization**: Many payers, including Medicaid, require prior authorization for enteral nutrition products, especially for specialized formulas like those billed with B4160. Always verify the need for and obtain prior authorization before providing the service or product. - **No reimbursement for oral use**: B4160 is specifically for formulas administered through a feeding tube. Reimbursement is not provided for products given orally. - **Place of service**: The formula may be billed for use in various settings, including hospitals, outpatient clinics, or the patient's home, with appropriate medical oversight.

## **Other related codes** - **B4158**: Enteral formula, for pediatrics, nutritionally complete with intact nutrients. - **B4159**: Enteral formula, for pediatrics, nutritionally complete soy-based. - **B4161**: Enteral formula, for pediatrics, hydrolyzed/amino acids and peptide chain proteins. - **B4162**: Enteral formula, for pediatrics, special metabolic needs for inherited metabolic disease.