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Medicare Part A vs Part B in Skilled Nursing Facilities

Medicare Part A and Part B operate in parallel inside a skilled nursing facility, but they pay for very different things. Understanding where one ends and the other begins is the first step to recovering missed Part B supply revenue.

Last updated May 2026

Part A in an SNF

Part A covers the SNF benefit period, up to 100 days following a qualifying hospital stay, and reimburses through the Patient Driven Payment Model (PDPM). During Part A days, almost all supplies are bundled under consolidated billing.

Part B in an SNF

Part B covers medically necessary supplies and services for residents who are NOT in a Part A stay. This is where SNF supply reimbursement opens up, catheters, ostomy supplies, enteral nutrition, surgical dressings, and more, billed individually under HCPCS codes.

Where SNFs lose revenue

The most common gap: a resident transitions off Part A and continues to receive Part B-eligible supplies, but no one re-evaluates their billing status. Months of billable supply utilization go uncaptured.

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Related

Frequently asked questions

  • U.S. skilled nursing facilities (SNFs). We specialize in Medicare Part B supply reimbursement billed under your facility's NPI and tied to your clinical record.
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