B4100 HCPCS code: Food thickener, administered orally, per ounce
B4100 is the HCPCS Level II code for food thickener, administered orally, per ounce. Its Medicare coverage code is M (Non-covered by Medicare): Medicare does not cover this item or service.
Code details
| Field | Value |
|---|---|
| Section | B codes — Enteral and parenteral therapy |
| Coverage code | M — Non-covered by Medicare |
| Pricing indicator | 00 — Not separately priced by Medicare |
| BETOS category | Z2 |
| Added | 2003-01-01 |
| Last action effective | 2005-01-01 |
Medicare policy articles for this code
- A58833: Enteral Nutrition - Policy Article (CGS Administrators, LLC (DME MAC) Noridian Healthcare Solutions, LLC (DME MAC)) — mentions this code in its coding guidance
Covered diagnoses (21 ICD-10-CM codes)
The diagnoses most often listed as covered in the policy articles above:
| ICD-10-CM | Diagnosis | Articles listing it |
|---|---|---|
| E08.69 | Diabetes mellitus due to underlying condition with other specified complication | 1 |
| E09.69 | Drug or chemical induced diabetes mellitus with other specified complication | 1 |
| E10.69 | Type 1 diabetes mellitus with other specified complication | 1 |
| E11.69 | Type 2 diabetes mellitus with other specified complication | 1 |
| E13.69 | Other specified diabetes mellitus with other specified complication | 1 |
| E84.19 | Cystic fibrosis with other intestinal manifestations | 1 |
| E84.8 | Cystic fibrosis with other manifestations | 1 |
| E84.9 | Cystic fibrosis, unspecified | 1 |
| K50.018 | Crohn's disease of small intestine with other complication | 1 |
| K50.118 | Crohn's disease of large intestine with other complication | 1 |
Showing 10 of 21. The full list, non-covered diagnoses and CSV export are in Caduvo.
What changed for B4100
- 2003-01-01: B4100 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 B4100?
B4100 is the HCPCS Level II code for food thickener, administered orally, per ounce. Short descriptor: "Food thickener oral".
Does Medicare cover B4100?
Coverage code M — Non-covered by Medicare. Medicare does not cover this item or service.
Which diagnoses support coverage for B4100?
Medicare policy articles that cite B4100 list 21 covered ICD-10-CM diagnosis codes across 1 article. The most cited include E08.69 (Diabetes mellitus due to underlying condition with other specified complication), E09.69 (Drug or chemical induced diabetes mellitus with other specified complication), E10.69 (Type 1 diabetes mellitus with other specified complication). A listed diagnosis is necessary but not sufficient; the policy's other criteria still apply.
Related B41 codes
- 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
- B4157 — Enteral formula, nutritionally complete, for special metabolic needs for inherited disease of metabolism, includes proteins, fats, carbohydrates, vitamins and minerals, may include fiber, administered through an enteral feeding tube, 100 calories = 1 unit
Building a device that would bill under a code like this? Caduvo matches a device description to HCPCS/CPT codes, Medicare coverage and payment, and the FDA pathway in one report.
Next steps
- Run a reimbursement report for a device billed under B4100
- Watch B4100 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for B4100
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.