B4172 HCPCS code: Parenteral nutrition solution; amino acid, 5.5% through 7%, (500 ml = 1 unit) - home mix
B4172 is the HCPCS Level II code for parenteral nutrition solution; amino acid, 5.5% through 7%, (500 ml = 1 unit) - home mix. Its Medicare coverage code is D (Special coverage instructions apply): Medicare covers it when its national or local coverage criteria are met. The NCCI unit limit is 2 per day on DME suppliers.
Code details
| Field | Value |
|---|---|
| Section | B codes — Enteral and parenteral therapy |
| Coverage code | D — Special coverage instructions apply |
| Pricing indicator | 39 — DMEPOS: parenteral and enteral nutrition |
| BETOS category | O1C — Enteral and parenteral nutrition |
| Added | 1984-01-01 |
| Last action effective | 2002-01-01 |
NCCI unit limits (MUE)
| Claim type | Max units per day | Rationale |
|---|---|---|
| DME suppliers | 2 | Clinical: CMS Workgroup |
What changed for B4172
- 1984-01-01: B4172 added to HCPCS Level II
- Next scheduled CMS quarterly update (HCPCS and DMEPOS fee schedule): 2027-01-01
Frequently asked questions
What is HCPCS code B4172?
B4172 is the HCPCS Level II code for parenteral nutrition solution; amino acid, 5.5% through 7%, (500 ml = 1 unit) - home mix. Short descriptor: "Parenteral sol amino acid 5.".
Does Medicare cover B4172?
Coverage code D — Special coverage instructions apply. Medicare covers it when its national or local coverage criteria are met.
How many units of B4172 can be billed per day?
2 on DME suppliers (NCCI medically unlikely edits).
Related B41 codes
- B4100 — Food thickener, administered orally, per ounce
- B4102 — Enteral formula, for adults, used to replace fluids and electrolytes (e.g., clear liquids), 500 ml = 1 unit
- B4103 — Enteral formula, for pediatrics, used to replace fluids and electrolytes (e.g., clear liquids), 500 ml = 1 unit
- B4104 — Additive for enteral formula (e.g., fiber)
- B4105 — In-line cartridge containing digestive enzyme(s) for enteral feeding, each
- B4148 — Enteral feeding supply kit; elastomeric control fed, per day, includes but not limited to feeding/flushing syringe, administration set tubing, dressings, tape
- B4149 — Enteral formula, manufactured blenderized natural foods with intact nutrients, includes proteins, fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit
- B4150 — Enteral formula, nutritionally complete with intact nutrients, includes proteins, fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit
- B4152 — Enteral formula, nutritionally complete, calorically dense (equal to or greater than 1.5 kcal/ml) with intact nutrients, includes proteins, fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit
- B4153 — Enteral formula, nutritionally complete, hydrolyzed proteins (amino acids and peptide chain), includes fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit
- B4154 — Enteral formula, nutritionally complete, for special metabolic needs, excludes inherited disease of metabolism, includes altered composition of proteins, fats, carbohydrates, vitamins and/or minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit
- B4155 — Enteral formula, nutritionally incomplete/modular nutrients, includes specific nutrients, carbohydrates (e.g., glucose polymers), proteins/amino acids (e.g., glutamine, arginine), fat (e.g., medium chain triglycerides) or combination, administered through an enteral feeding tube, 100 calories = 1 unit
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Next steps
- Run a reimbursement report for a device billed under B4172
- Watch B4172 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for B4172
Sources: CMS HCPCS Level II release October 2025; CMS DMEPOS fee schedule; CMS NCCI MUE tables; CMS Medicare utilization (physician and DME supplier files); CMS Medicare Coverage Database articles. Fees are Medicare allowables, not commercial rates. Not billing or legal advice.