Rising Durable Medical Equipment, Prosthetics, Orthotics, and Supplies (DMEPOS) expenditures and utilization continue to increase payment integrity risk across healthcare reimbursement. As CMS expands enforcement efforts, including enrollment moratoria for certain DMEPOS suppliers, identifying billing practices that drive inappropriate reimbursement has become increasingly important. One of the most common schemes is unbundling, where providers bill separately for components, supplies, or services that should be reimbursed under a single comprehensive code.

Common DMEPOS Unbundling Practices

• Accessory separation: Billing accessories independently from the primary equipment rental or purchase.
• Supply fragmentation: Separately billing supplies that should be reimbursed under a comprehensive code.
• Component breakdown: Billing individual supply components, such as tubing, masks, or filters, rather than the complete kit.
• Daily charge splitting: Billing daily or unit-based charges instead of a single monthly rental or bundled purchase code.

Unbundling Schemes Related to Enteral Nutrition

Enteral nutrition is covered for patients who require feeding through an enteral access device to maintain weight and nutritional status.

Enteral Formulas and Additives

• B4150: Nutritionally complete formula with intact nutrients (standard formula)
• B4152: Nutritionally complete, calorically dense (≥ 1.5 kcal/ml)
• B4149, B4153-B4155, B4157, B4161, and B4162: Specialized formulas
• B4105: In-line cartridge containing digestive enzymes
• B4104: Additive for enteral formula

Equipment and Feeding Tubes

• B9002: Enteral nutrition infusion pump
• B4081-B4083: Nasogastric/Stomach tubes
• B4087-B4088: Gastrostomy/jejunostomy tubes
• E0776: IV pole

Enteral Feeding Supply Kits

• B4034: Enteral feeding supply kit; syringe fed, per day
• B4035: Enteral feeding supply kit; pump fed, per day
• B4036: Enteral feeding supply kit; gravity fed, per day
• B4148: Elastomeric control fed, per day

Coding Guidelines

Enteral feeding supply codes B4034-B4036 and B4148 represent all-inclusive daily supply allowances and include the supplies necessary to administer enteral nutrition, excluding feeding tubes (B4081-B4083 and B4087-B4088) and nutrients. Only one unit of service may be billed per day, consistent with CMS guidance in Policy Article A58833 and LCD L38955.

Detecting DMEPOS Unbundling with AI-Driven Analytics

Because many unbundling schemes involve recurring patterns across claims, suppliers, and patient populations, advanced analytics can play a critical role in identifying aberrant billing behavior.

Fraud Scope’s pattern-based detection models, including Suspicious Trends, Frequent Combinations, and Outlier Abuse, can identify unusual utilization of codes commonly unbundled from enteral feeding supply allowances. Examples include feeding or flushing syringes, administration tubing, anchoring devices, feeding bags or containers, flushing solution, extension tubing, dressings, and tape.

Fraud Scope’s built-in generative AI-powered natural language query tool applies healthcare intelligence at the claim line and summary utilization levels enabling users to identify:

• Providers with outlier utilization of services commonly unbundled from enteral supply allowances
• Elevated paid-per-patient amounts associated with miscellaneous supply code B9998
• Enteral nutrition supplies billed on separate days to circumvent claim edits
• Enteral nutrition services provided to patients residing in nursing facilities

As DMEPOS billing scrutiny continues to intensify, proactive identification of unbundling patterns is essential for reducing improper reimbursement and strengthening payment integrity programs. Combining policy-aware analytics with AI-driven pattern detection enables organizations to identify emerging billing risks earlier and prioritize investigations more effectively.

References / New Articles:

CMS Enteral Nutrition LCD L38955

https://www.cms.gov/medicare-coverage-database/view/lcd.aspx?lcdid=38955

CMS Enteral Nutrition Policy Article A58833

https://www.cms.gov/medicare-coverage-database/view/article.aspx?articleId=58833&ver=17

CMS DMEPOS Fee Schedule Lists

https://www.cms.gov/medicare/payment/fee-schedules/dmepos/dmepos-fee-schedule

United States Department of Justice

https://www.govinfo.gov/content/pkg/GOVPUB-HE-PURL-gpo70334/pdf/GOVPUB-HE-PURL-gpo70334.pdf

AAPC Knowledge Center – Deliver Proper Coding for Enteral Nutrition

https://www.aapc.com/blog/93304-deliver-proper-coding-for-enteral-nutrition/?srsltid=AfmBOooe4b4lxC4FjLtIqXOx4Hxd4r3vRC33uJ9R5ERVpa95qzu2lmb9

Trump Administration Prioritizes Affordability by Announcing Major Crackdown on Health Care Fraud

https://www.cms.gov/newsroom/press-releases/trump-administration-prioritizes-affordability-announcing-major-crackdown-health-care-fraud