Medicare Part B Ostomy Supply Billing for Skilled Nursing Facilities

When a resident with a colostomy is admitted to your building, a supply company usually shows up within days. It brings pouches, barriers, and accessories, and in many arrangements it submits the Part B claim under its own NPI. Then it comes back the next month, and the month after that, for as long as that resident is in your care.

Your billing department may never see those claims. Here is what Medicare Part B covers for ostomy supplies, what the documentation has to show, and what changes when the facility submits those monthly claims under its own NPI.

Three Types of Ostomy, One Billing Framework

Medicare Part B covers ostomy supplies for a resident with a surgically created opening, a stoma, that diverts urine or fecal contents outside the body. In practice that means three ostomy types: colostomy, ileostomy, and urinary diversion (urostomy). All three sit under the prosthetic device benefit at 42 U.S.C. § 1395x(s)(8) and share the same facility-NPI billing framework. Ostomy supplies used for other conditions are denied as non-covered.

Part B applies to residents who are not in a covered Part A stay. During a covered Part A stay, ostomy supplies fall inside SNF consolidated billing. Once Part A days end, or if the resident was never in a Part A stay, every month of ostomy supplies is a Part B claim. If you have not confirmed which of your residents fall into that window, the Medicare Part B supply billing guide walks through the resident-status question first.

HCPCS Codes and Monthly Quantity Limits

Each pouching system type maps to its own HCPCS supply codes, and Medicare publishes usual maximum monthly quantities by code. Those maximums are guidelines rather than hard caps: what a resident actually needs turns on the type of ostomy, its location and construction, and the condition of the peristomal skin. Anything above the usual maximum is payable only when the medical record explains why.

One rule is specific to your setting: a supplier may not dispense more than a one-month supply at a time to a beneficiary in a nursing facility, compared with three months for a beneficiary at home. That is why the ostomy refill cycle is monthly, and why the billing volume is recurring rather than episodic.

What the Claim Requires

Billing ostomy supplies under Part B requires a standard written order from the treating practitioner, a covered ICD-10 diagnosis code establishing the ostomy condition, records showing that what was dispensed matches what was ordered and stays within the usual maximum quantities (or a documented reason it does not), and proof of delivery.

Since 2020 the standard written order needs the beneficiary's name or MBI, the order date, a general description of the item, the quantity to be dispensed, and the treating practitioner's name or NPI and signature. The practitioner can be a physician, PA, NP, or CNS. Change frequency and estimated duration are no longer required order elements.

The diagnosis is usually already in your admission documentation. A colostomy or ileostomy performed before admission appears in the surgical history, and the ostomy status code travels with the resident through the transfer paperwork. You are capturing a record that already exists rather than building a new one.

The detail that needs the most attention is quantity. The claim has to reflect the order and the record: system type, supplies dispensed, and monthly quantity, with an explanation in the chart whenever the quantity runs above the usual maximum. Our documentation and audit readiness hub sets out what a complete claim file contains.

How External Suppliers Capture This Revenue Month After Month

Many SNFs inherited an external ostomy supplier relationship that predates any awareness of the facility-NPI alternative. The supplier provides the products, submits the claim under its own NPI where the item is separately billable to it, and receives the reimbursement. The facility receives the supplies but not the claims revenue or the claim data behind it.

That arrangement resets every month. Over 12 months, a single resident with a colostomy generates 12 monthly billing cycles. Multiply that by every ostomy resident in the building, then by the number of months each resident stays. If you have never examined the arrangement claim by claim, start with the five-step supply vendor audit.

What the Facility-NPI Model Changes

When a SNF purchases ostomy supplies and bills under its own NPI, the monthly reimbursement flows to the facility instead of the supplier. Clinical care does not change. Product selection stays with your clinical team and the resident's treating practitioner. The monthly refill process stays the same. What changes is the NPI on the claim and the destination of the Electronic Remittance Advice.

Ostomy billing suits this model for a specific reason: the volume is recurring. A wound care claim resolves when the wound heals. An ostomy supply claim runs every month for as long as the resident is in your building. If you have already read our surgical dressing billing guide, the mechanics here will look familiar; the differences are the code set, the monthly quantity structure, and the chronic nature of the volume. The broader comparison is in supplier-billed vs. facility-NPI Part B billing.

The Compliance Case for Billing Under Your Own NPI

CMS lists DMEPOS suppliers as one of its fraud hot spots. Ostomy supplies are not among the items it names as most often targeted; urological supplies and surgical dressings are. In its most recent improper payment reporting, CMS projected roughly $2.3 billion in improper DMEPOS payments at a 24.1% rate, with ostomy supplies a small, lower-error slice at about $21 million and an 11.0% rate.

CMS is careful to say that an improper payment rate is not a fraud rate, and these national figures do not establish that any particular supplier or facility arrangement is improper. For ostomy supplies, close to 80% of the errors were insufficient documentation: the record existed but did not fully support the claim, or a piece of it, such as proof of delivery, was missing when the reviewer asked.

In a standard external supplier arrangement, your documentation supports a claim someone else submitted. When the review letter arrives, the supplier has to come back to you for the order, the nursing notes, and the reason a resident needed more pouches than usual, and the clock is already running. When the facility bills under its own NPI, the claim and the records sit with the same entity. CMS does not endorse one billing model over another; what changes is who holds the records the reviewer asks for.

What Burst Does for SNF Ostomy Billing

Burst reads the ostomy documentation your clinical team already produces in PointClickCare, identifies the applicable HCPCS codes by ostomy type and supply category, verifies claim quantity against the order, the record, and the published usual maximums, and submits the claim under your facility's NPI. Burst is a PointClickCare Marketplace Partner with read-only access, so your staff does not learn a new system. See how the PointClickCare integration works.

Human QA runs on every claim before submission. Quantity gaps, missing orders, and supply category misclassifications get caught before the claim leaves our system. Burst processed 18,974 claims in 2025 and works with facilities in 16 states.

Your current ostomy supplier relationship stays intact, and Burst does not specify products. The contingency model means there is no setup fee, no monthly minimum, and a month-to-month term. Details are on the Part B supplies reimbursement service page.

Compliance Note

This article is general information, not legal or billing advice. Coverage rules, HCPCS codes, and quantity limits change. Verify each item against current contractor instructions and the applicable Local Coverage Determination, and have your compliance officer or counsel review any change in billing arrangement before implementation.

References

• 42 U.S.C. § 1395x
• Medicare Claims Processing Manual, Chapter 7 (SNF Part B Billing)
• CMS Standard Documentation Requirements (Article A55426)
• CMS Fraud Hot Spot: DMEPOS Suppliers fact sheet
• 2025 Medicare FFS Supplemental Improper Payment Data
• CMS SNF Consolidated Billing