Diabetes mellitus is classified in categories E08E13 of Chapter 4 (Endocrine, Nutritional and Metabolic Diseases) of the ICD-10-CM FY2026 Tabular List
do not interchange SubQ, IM, or IV products
A simple way to think about it is in two phases
Both medications have minimal side effects, mostly involving minor digestive upset or injection site reactions

Key Takeaways HCPCS code B4150 describes a nutritionally complete enteral formula containing proteins, fats, carbohydrates, and vitamins, billed per 100 calories (1 unit = 100 calories) Medicare covers B4150 under its prosthetic device benefit, not the DME benefit, when a patient has a non-functional GI tract or a condition preventing adequate oral nutrition, and claims are processed through the DME MAC system with a written physician order on file Incorrect unit calculation (not converting total daily calories to per-100-calorie units) is the most common billing error leading to claim denial for B4150 Pabaus claims management software helps DME suppliers track documentation requirements, manage physician orders, and reduce B4150 claim denials HCPCS code B4150 is the Medicare billing code for a nutritionally complete enteral formula: proteins, carbohydrates, fats, vitamins, and minerals, delivered through a feeding tube and billed per 100 calories (1 unit = 100 calories)