Medicare Part B billing FAQ for SNFs

Yes, for residents who are not in a covered Part A stay. Tracheostomy supplies are covered under the prosthetic device benefit (42 U.S.C. § 1395x(s)(8)), and a SNF can bill them on its Part B institutional claim under its own NPI. During a covered Part A stay they are bundled under consolidated billing.

LCD L33832, Tracheostomy Care Supplies, sets the coverage criteria and usual maximum quantities. Its companion Policy Article A52492 sets the benefit category and coding rules.

A beneficiary following an open surgical tracheostomy that has been open, or is expected to remain open, for at least three months. The record should document the tracheostomy and that it is expected to stay open.

Yes, for residents who are not in a covered Part A stay. Medicare Part B covers leg, arm, back, and neck braces under 42 U.S.C. § 1395x(s)(9), and a SNF bills them to its Medicare Administrative Contractor on its Part B institutional claim under the facility's NPI. During a covered Part A stay, orthotics sit inside the SNF PPS payment under consolidated billing. Most SNFs instead let an external supplier bill under the supplier's NPI, or dispense prefabricated devices internally without billing at all.

Covered device types include ankle-foot orthoses, wrist and hand splints, knee orthoses, hand and finger splints, and cervical orthoses, as long as the device is rigid or semi-rigid and supports a weak or deformed body member or restricts motion in a diseased or injured one. Each maps to specific HCPCS L-codes that distinguish device type, material, joint configuration, and coding tier. Verify specific L-codes against the current HCPCS Level II code set, which updates quarterly.

A Standard Written Order from the treating practitioner (physician, PA, NP, or CNS), medical records from that practitioner supporting that the device is reasonable and necessary, and proof of delivery. For codes on CMS's Required Face-to-Face Encounter and Written Order Prior to Delivery List, the practitioner must also have examined the resident within six months before the order, and the order must be complete before delivery. PT and OT assessment notes typically hold the clinical picture, but the practitioner has to review and sign them before writing the order. Custom-fitted devices need a fitting record; custom-fabricated devices need documentation of why a prefabricated device will not work. No Certificate of Medical Necessity applies; CMS discontinued CMNs in 2023.

Documentation of a qualifying wound, meaning a wound caused by or treated by a surgical procedure or a wound debrided by any method; wound dimensions; a signed Standard Written Order from the treating practitioner naming the dressing and the quantity, renewed every three months; documentation of the dressing type, the amount used per change, and the change frequency; documentation that the dressing type suits the wound's depth and drainage; and ongoing wound evaluation, monthly at minimum and weekly for nursing facility residents. Pressure injuries, venous ulcers, arterial ulcers, and diabetic foot wounds qualify when the record shows they were surgically treated or debrided.

Many surgical dressing HCPCS categories are size-coded, with separate codes for pad sizes of 16 square inches or less, more than 16 up to 48, and more than 48. The pad has to be sized to the wound, so the documented wound dimensions determine which tier applies. Without measurements in the record, the coder cannot select the correct code and any selection becomes a guess with audit exposure.

A Standard Written Order with the resident's name or Medicare Beneficiary Identifier, the order date, a description of the dressing, the quantity to be dispensed, and the treating practitioner's name or NPI and signature. The treating practitioner can be a physician, physician assistant, nurse practitioner, or clinical nurse specialist. Frequency is no longer a required element of the order itself, but the record must document the change frequency and the number used at each change. A new order is required every three months for each dressing, and whenever a dressing is added or the quantity increases.

Yes, in the circumstances the rules allow. Medicare Part B covers urological supplies, including indwelling catheters, intermittent catheters, external catheters, drainage bags, and irrigation supplies, under the prosthetic device benefit at 42 U.S.C. § 1395x(s)(8), billed under a facility's own NPI for residents who are not in a covered Part A stay. Many SNFs instead allow an external DME supplier to bill, which directs the reimbursement away from the facility.

Covered supplies include indwelling (Foley) catheters (A4338, A4344, A4340, A4346), intermittent catheters and sterile catheter kits (A4351, A4352, A4353, and the hydrophilic codes A4295, A4296, A4297 effective January 1, 2026), external condom catheters (A4349), urinary drainage bags (A4357, A4358), and catheter insertion and irrigation supplies. Each carries its own HCPCS code, coverage criteria, and usual maximum monthly quantity.

Urostomy billing covers pouching supplies for residents with a surgically created urinary diversion and an external stoma, coded A5071 through A5073 under the ostomy policy. Urological supply billing covers catheter-based urinary management, coded mainly in the A4310 through A4360 range under a separate policy. Both are billable under the facility's NPI, but the populations, supply categories, and HCPCS codes are distinct.

Yes, in the circumstances the rules allow. Medicare Part B covers ostomy supplies under the prosthetic device benefit at 42 U.S.C. § 1395x(s)(8), and a facility can bill them under its own NPI for residents who are not in a covered Part A stay. Coverage applies to colostomy, ileostomy, and urostomy supplies for residents with a surgically created stoma. Many SNFs instead allow an external supplier to bill, which directs the monthly reimbursement to the supplier.

Covered supplies include closed pouches (A5051–A5054), drainable pouches (A5061–A5063, plus A5056 and A5057 for extended wear barriers), urostomy pouches (A5071–A5073), newer pouch designs in the A4375–A4435 range, and skin barriers, irrigation supplies, and accessories in the A4361–A4415 and A5093–A5131 ranges. Medicare publishes usual maximum monthly quantities for each code.

Medicare publishes usual maximum monthly quantities by HCPCS code, including 60 closed pouches, 20 drainable pouches, 20 urostomy pouches, and 40 drainable pouches with an extended wear barrier. The billed quantity must be supported by the order and the record. Quantities above the usual maximum are payable only when the medical record explains the need. A supplier also cannot dispense more than a one-month supply at a time to a resident in a nursing facility.

If the item is separately billable to an enrolled supplier and the supplier submits the claim under the applicable rules, the supplier may receive the Medicare payment, subject to assignment and other payment rules. If SNF consolidated billing applies, the SNF may be responsible for billing Medicare and paying the supplier under an arrangement. Verify the claim, remittance, resident status, item, and contract before reaching a conclusion.

Sometimes, depending on the resident's status, the item and HCPCS code, the date of service, enrollment, and the applicable Medicare billing rules. CMS guidance states that services subject to SNF consolidated billing during a covered Part A stay generally must be billed by the SNF, either directly or under an arrangement with an outside supplier. CMS also describes separate billing rules for certain items and for SNF outpatients or Part B residents. Verify the claim requirements with the applicable Medicare contractor before billing.

Medicare Part B can cover certain DMEPOS items for eligible beneficiaries, including items such as surgical dressings, ostomy supplies, urological supplies, tracheostomy supplies, and orthotic or prosthetic items. Coverage, documentation, supplier enrollment, and billing rules vary by item and setting. The list is not a blanket authorization for direct SNF billing, so each item should be verified with the applicable Medicare contractor.

Sometimes, depending on the resident's status, the item, the date of service, and the applicable Medicare billing rules. CMS guidance states that items and services subject to SNF consolidated billing during a covered Part A stay generally must be billed by the SNF, either directly or under an arrangement with an outside supplier. CMS also describes separate billing rules for certain items and for SNF outpatients or Part B residents. The facility should verify the HCPCS code and beneficiary status with the applicable Medicare contractor before billing.

Request it formally in writing and identify the contract, authorization, compliance, reconciliation, or transition purpose. Ask for HCPCS codes, dates of service, claim status, allowed and paid amounts, denials, adjustments, and recoupments, subject to privacy and authorization requirements. If the supplier does not provide the information, document the request and review the contract and escalation options with counsel or the compliance officer.

A Local Coverage Determination is one type of Medicare contractor coverage guidance. An LCD can specify coverage requirements, documentation, and medical-necessity criteria for particular items or services. The applicable rules may also come from a National Coverage Determination, the Medicare Claims Processing Manual, DME MAC guidance, or other Medicare authorities. Claims should be evaluated against the rules applicable to the item, payer, and date of service.

Six useful management metrics are claim submission rate, first-pass approval rate, denial rate by category, average payment per claim, days to payment, and net payment per resident per month. Together they help show whether supported claim opportunities are being captured, paid, denied, or delayed. The facility should define each metric consistently and apply the rules for the item, payer, and resident status.

First-pass approval rate measures claims accepted and paid without denial, correction, or additional documentation requests, using a consistent numerator and denominator. A declining rate is an early warning that the submission or documentation process may not be meeting applicable coverage requirements. There is no single Medicare-wide target that applies to every supply category, payer, or MAC jurisdiction.

The denial category is diagnostic, but not conclusive by itself. Medical-necessity denials may point to a clinical support gap. Documentation denials may point to missing orders, incomplete notes, or certification gaps. Eligibility denials may point to admissions or payer-status problems. Coding, duplicate, and timely-filing denials require different fixes. Review representative claims before drawing a conclusion.

A CARC (Claim Adjustment Reason Code) is a standardized code that appears on the Medicare 835 electronic remittance advice when a claim is denied, reduced, or adjusted. CARC codes are maintained by X12 as part of the HIPAA 835 transaction standard and are used consistently by Medicare Administrative Contractors. Every adjusted Medicare claim receives at least one CARC identifying the category of the problem.

A RARC (Remittance Advice Remark Code) supplements a CARC with specifics about why a claim was denied or what action is required. RARC codes are maintained by CMS. Where the CARC identifies the general category, such as not medically necessary, the RARC often names the exact cause or the next step, such as based on a Local Coverage Determination or you have appeal rights. Read the two together.

The codes seen most often are CARC 97 (bundled into another service, commonly a consolidated billing conflict), CARC 50 (not medically necessary), CARC 96 (non-covered charges), CARC 4 (modifier inconsistent or missing), CARC 16 (missing or invalid information), CARC 29 (timely filing), and CARC 18 (exact duplicate). CARC 97 reflects the consolidated billing requirements established by the Balanced Budget Act of 1997 and codified at 42 CFR 411.15(p).

Under 42 CFR 424.44(a), Medicare Part B claims must be filed within one calendar year of the date of service. For a supply furnished in September 2025, the filing deadline is September 2026, after which the claim is non-payable. Four narrow exceptions exist: administrative error by an employee, Medicare contractor, or agent of the government; retroactive Medicare entitlement; retroactive Medicare entitlement involving a state Medicaid agency; and retroactive disenrollment from a Medicare Advantage plan or PACE organization.

Under the benefit categories in Section 1861(s) of the Social Security Act and the billing rules in CMS Pub. 100-04, Chapter 7, SNFs can bill Medicare Part B for surgical dressings, ostomy supplies, urological supplies, tracheostomy supplies, and splints and orthotics. Burst bills enteral nutrition for Medicare Advantage residents only; under traditional Medicare, enteral nutrition runs through the DME MAC pathway. Durable medical equipment falls under a separate regulatory framework.

Yes. When a resident is not in a covered Medicare Part A stay, Part B billing authority applies for the eligible supply categories. That includes Part B-only residents, residents on non-covered Part A days, and residents who have exhausted their Part A benefit. The transition point out of a covered Part A stay is where this billing is most often missed.

The difference is which NPI appears as the billing provider on the claim. Under the supplier-billed model, an outside supply vendor submits the claim under its own NPI and Medicare pays the supplier. Under the facility-NPI model, the skilled nursing facility submits the claim under its own NPI and Medicare pays the facility. The supply, the resident, and the clinical documentation can be identical in both cases.

Yes. For residents who are not in a covered Part A stay, a skilled nursing facility can bill its A/B MAC under its own NPI for surgical dressings, ostomy, urological, tracheostomy, and splint and orthotic supplies. An enrolled supplier billing the DME MAC is the alternative pathway. Both are permitted; only one of them pays the facility.

The billing NPI tells CMS who to pay. It is the field that determines whether Part B supply reimbursement lands with the facility or with an outside supplier, regardless of who ordered, delivered, or documented the supply.

A SNF can bill Part B for surgical dressings when the resident is not in a covered Part A stay, because Part A benefit days ran out, the stay does not meet skilled criteria, or the resident is custodial. In that window the dressings are billable as a Part B supply claim under the facility's own NPI, provided the order, wound documentation, and coding requirements are met.

A signed practitioner order specifying dressing type, size, and change frequency; a wound assessment covering location, size, depth, and drainage; chart documentation connecting the ordered dressing to the clinical picture; evidence of medical necessity reassessment at the interval the applicable LCD requires; and quantity records that reconcile ordered, used, and billed amounts.

Surgical dressings bill under HCPCS Level II A-codes grouped by dressing type: alginate and fiber gelling, collagen, composite, contact layer, foam, gauze (impregnated and non-impregnated), hydrocolloid, hydrogel, specialty absorptive, transparent film, wound fillers and pouches, plus separately billed securement supplies. Verify specific codes and utilization limits against the active Surgical Dressings LCD for your MAC jurisdiction before billing.

Separate the supply contract from the billing arrangement in writing, run the new billing partner in parallel with the existing vendor billing for 60 to 90 days, migrate claims and coding history on a written timeline, keep product ordering on its existing cadence throughout, then set a cutover date with a two-week fallback window for questions on older claims.

No. A facility-side model changes who submits and owns the Part B claims, not who delivers the product. Most facilities keep their existing supply vendor and simply stop bundling billing into that relationship.

Sixty to ninety days is typical. That window is long enough to compare denial rates, turnaround time, and reimbursement accuracy across at least two full billing cycles before committing to a cutover date.

A Part B supply reimbursement review process runs through five connected stages: identify which supplies fall into Part B-billable categories, verify resident payer status on the delivery date, confirm documentation (signed order, chart support, and proof of delivery or usage), code and submit under the facility's NPI, and track results including held, excluded, and never-submitted items. Each stage needs a defined owner and a connection to the next. The process does not require dedicated billing staff, but it does require one person who holds the workflow together.

When a resident is not under a covered Medicare Part A stay, SNFs can bill Medicare Part B for certain surgical dressings, urological supplies, ostomy supplies, tracheostomy supplies, and splints and orthotics, when properly ordered, documented, and delivered. Enteral nutrition is covered under Medicare Advantage but not traditional Medicare Part B in the SNF context. Items that fall under separate DME billing pathways follow different rules.

Most SNFs have not built a formal review process because external supply vendors historically absorbed the billing function, submitting claims under their own NPI and keeping the reimbursement. Facilities got used to not seeing Part B supply revenue as a line item. The billing rights under 42 U.S.C. § 1395x(s) and 42 CFR 411.15(p)(2) have always existed; the process to use them was never built.

SNFs prepare by building a traceable record behind every billing decision before anyone asks for it. Start with a one-claim test: pull a single claim and ask how quickly the team can produce resident status, signed order, clinical documentation, proof of delivery or usage, and the note explaining why the item was billed or held. From there, a monthly review cycle applying the bill, hold, exclude, and review framework to every supply claim creates the audit trail that holds up under scrutiny.

Resident status at the time of service, signed orders for supply categories that require them, clinical documentation connecting the item to the care plan, proof of delivery or usage where required, vendor invoices matched to billing review, and decision notes explaining why each item was billed, held, or excluded. For Part B supply billing, confirming whether the resident was under a covered Part A stay on the date of service is often the highest-risk single check.

Missing signed orders, weak clinical documentation, disconnected vendor records, resident status changes that were not caught before billing, coding or date mismatches between the claim and the supporting record, and the absence of decision notes explaining why each item was billed or excluded. Tracking denied claims without reviewing unbilled items is also a gap.

Yes. SNFs can recover revenue and stay audit-ready when recovery starts with documentation and claim support. Before a claim moves forward, the facility should confirm resident status, documentation, medical necessity, proof of delivery or usage where applicable, code, unit, date, and billing pathway, and track whether each item was billed, held, excluded, denied, paid, or sent for review.

Missed reimbursement and unsupported billing can come from the same weak process. A facility may leave supported revenue uncollected because documentation is hard to assemble, and it may create risk if claims move forward without enough support. A documentation-first review reduces both problems.

Start with resident status, clinical documentation, signed orders where required, vendor invoices, supply usage records, proof of delivery or usage, claim history, denial patterns, and billing reports. For Part B supply work, also review item category, code, unit, date, and billing pathway.

A practical 2026 SNF billing compliance checklist should cover resident status on the date of service, clinical documentation and medical necessity, signed orders where required, proof of delivery or usage, vendor and supply records, code, unit, date and item category, denial history and repeat patterns, and a recorded billing decision of bill, hold, exclude, or review with a named follow-up owner.

Billing decisions depend on many moving parts across nursing, finance, admissions, and billing. When those pieces do not connect, a facility can miss supported reimbursement and submit claims it cannot easily support later. A checklist reduces both risks and gives leadership a repeatable view of the process.

Monthly is a practical starting point for most facilities. High-volume facilities, facilities with frequent payer changes, or teams with repeat documentation issues may need a tighter cycle. The review should include denied claims, held items, excluded items, and unbilled items.

Common Part B documentation gaps include unclear resident status, missing signed orders where required, weak chart support, missing proof of delivery or usage, vendor records that do not reach billing review, code or date mismatches, and no record of why an item was billed, held, or excluded. These gaps can lead to denials, delayed claims, missed reimbursement, or unsupported billing decisions.

Small process issues can affect reimbursement, claim accuracy, audit readiness, and leadership visibility. A facility may provide care and use the supply but still struggle to support the claim if the resident status, order, chart note, delivery proof, vendor record, or billing decision is hard to find.

Start with resident status, clinical documentation, signed orders where required, vendor invoices, supply usage records, proof of delivery or usage, claim history, denial patterns, and billing reports. For Part B supply work, also review item category, code, unit, date, and billing pathway.

Medicare billing red flags for SNFs are process signals that show where a facility's billing review may have gaps. The most common include: no clear owner for the billing review, resident status changes that don't reach billing, documentation that can't be matched to claims, vendor invoices staying in finance, denied claims reviewed without reviewing unbilled items, exclusions with no decision record, outside supplier billing not visible to leadership, PointClickCare data not connected to billing workflow, billing decisions relying on one person's memory, and no monthly billing health view for leadership. These signals don't always indicate billing errors. They show where the process may break before the error happens.

Small billing process gaps compound over time into revenue loss, compliance exposure, and audit vulnerability. A facility that reviews denied claims but doesn't review unbilled eligible items may be addressing only part of its billing problem while assuming it's addressing all of it. Catching red flags early keeps the fix small.

Start with resident status, signed orders, clinical documentation, vendor invoices, supply delivery or usage records, denial history, and billing decision logs. For Part B supply billing, also verify supply category eligibility, applicable HCPCS codes, LCD requirements for the relevant MAC, and whether all four required documentation elements are in place for each claim type.

Six: resident status and consolidated billing, documentation completeness, coverage and code alignment, supplier and vendor visibility, denial and appeal patterns, and audit-ready file discipline. Each is a place where a small error can be caught before it becomes an overpayment, a denial, or an audit finding.

Before, and throughout. Compliance should shape the first status screen, the documentation review, the coverage check, the exclusion decision, and the audit file, rather than waiting until a claim is ready. Building it into the workflow is what keeps reimbursement work from becoming an avoidable risk.

Because they're free data. Aviation improved safety by capturing near-misses, the events where nothing bad happened, and learning from them. In billing, an exclusion log and a record of caught mismatches show the process applies judgment, and they reveal the patterns worth fixing. A process that never flags anything isn't clean; it's not watching.

Documentation gives the care team a shared record of resident needs, supplies used, orders, status changes, and follow-up. The same record is what billing teams use to determine whether a claim can be supported. When it's complete and organized, both teams can work from it. When it's scattered, care decisions and billing decisions both get made without the full picture.

For most Part B supply categories in a skilled nursing facility, four pieces need to connect: a signed standard written order predating delivery, chart support showing medical necessity, proof of delivery or usage tying the supply to the resident on the service date, and confirmation the resident's status at the time of service supports Part B billing.

Resident status determines the billing pathway. During a covered Part A stay, most medical supplies are bundled under consolidated billing. After the Part A stay ends, those same supplies may be billable under Part B under the facility's NPI. A documentation process that doesn't capture status changes clearly creates billing errors or missed reimbursement.

SNFs connect compliance and revenue recovery by treating them as one process drawing from one source. A documentation-first review habit confirms resident status, matches the chart, verifies the order and delivery, then makes a decision. The documentation that satisfies compliance also supports the claim.

At minimum: confirmed resident status, a signed order where CMS requires one, chart documentation connecting the item to the resident's care, proof of delivery or usage, and the vendor invoice or supply record. Code, unit, and date should match across all sources.

No single process owner, vendor invoices that never reach billing, resident status changes that are not flagged, denials that get reviewed but unbilled items that do not, and leadership reports showing only submitted claims. If leadership cannot see held and excluded items, they are seeing half the picture.

Medicare Part B supply billing documentation for a skilled nursing facility typically includes nine records: resident payer status verification, a signed practitioner order where required, clinical chart documentation of medical necessity, proof of delivery or use, the vendor invoice or supply record, the date of service, the HCPCS code and item category, a billing decision note, and prior denial or payment history. Exact requirements depend on the supply category, the resident's payer status, and applicable LCD and coverage rules.

Documentation for a Part B supply claim comes from multiple departments: the business office or admissions team (payer status), nursing (clinical record and supply use), the prescribing physician or NP (signed order), finance (vendor invoice), and billing (claim decision). In most facilities, no single person is assigned to coordinate all five sources. Assigning a clear owner is the first step toward a reliable process.

The most common gaps are: payer status not confirmed before the billing decision, practitioner orders that exist but aren't connected to the billing record, chart notes that describe supply use without supporting medical necessity, vendor invoices that stay in finance, date mismatches between the order and supply use, and no billing decision note. Each gap creates either audit exposure on submitted claims or missed reimbursement on items that never got billed.

It's a sanctioned connection that lets a billing partner review the resident's status, clinical notes, orders, and supply documentation next to the billing data, so incomplete files get caught before submission. The value is cleaner traceability from documentation to the billing decision, plus an audit trail that builds as you go. It should support the reviewer and keep the billing judgment human.

Yes. A sanctioned API uses least-privilege access (a billing partner can be limited to status and billing-relevant records), encrypts data in transit and at rest, logs every access, and can be revoked. Screen scraping relies on shared credentials, breaks when screens change, and leaves no clean audit trail. Manual exports scatter PHI across inboxes and desktops with no access control. The connection method is a security decision.

Yes. Any partner that handles PHI needs a signed Business Associate Agreement in place before data moves. It's one of the first governance questions to confirm, alongside access level, encryption, user permissions, audit logs, and how access is removed if the relationship ends.

A supply counts only when it clears every filter: the benefit category, the resident's status on the date of service, payer context, medical necessity with a qualified practitioner's order, documentation of delivery or use, and the correct code under current coverage policy. The item name alone doesn't decide it. Verify specifics against current CMS guidance and your payer rules.

Not a fixed list that guarantees payment. Eligibility depends on the resident, the date of service, the documentation, and the coverage policy. The item is only the starting point. A general supply list can be useful for education, but treating it as a guarantee is how facilities bill items they can't support. Reimbursability is decided item by item.

No. A HCPCS Level II code identifies a product or supply so it can be described on a claim. Coverage is a separate decision based on medical necessity, documentation, and the applicable national or local coverage policy. An item can have a valid code and still fail coverage for a specific resident, date, or documentation set.

Six habits drive most of the errors: reviewing supply billing only when something forces it, confirming resident payer status at the back end of the workflow instead of the front, accepting supplier billing without visibility into the claims, building claims from invoice data instead of clinical documentation, billing under generic supply category labels instead of specific HCPCS codes, and tracking submitted claims while leaving exclusions untracked. Each is a documentation or visibility gap rather than a single large error.

CMS 2024 Medicare fee-for-service supplemental data shows DMEPOS improper payments at 24.1%, about $2.3 billion and roughly 3 times the 7.66% Medicare FFS average. Documentation failures drive most of it: records that can't establish medical necessity or confirm delivery. DMEPOS has a higher rate partly because supply documentation is distributed across vendors, clinical staff, and billing teams, creating more points where a gap can form before anyone catches it.

Payer status verification at the workflow start. It determines whether a claim is appropriate before any review time is spent. Getting it right at the front prevents consolidated billing errors and keeps the rest of the workflow on eligible claims. Documentation completeness and a monthly exception report are the next two controls that catch the most failures.

Six steps, run in order as a go/no-go gate: confirm the resident's status for the date of service, identify the exact supply (item, quantity, dates, reason), verify the documentation proves medical necessity, check coverage and codes, assemble a claim file that tells one story, and review outcomes monthly. A claim moves only when all six clear. If any step is weak, it holds until it's resolved.

The resident's status for the date of service. In a covered Part A stay, consolidated billing puts most services on the SNF and they can't be billed separately to Part B. Outside a covered Part A stay, the pathway can differ. Confirm status before you review the supply, because the same item follows a different rule depending on the stay.

Documentation. In 2024, Medicare fee-for-service had a 7.66% improper payment rate (about $31.7 billion), and CMS says the majority came from insufficient documentation — records that didn't prove the item was provided or medically necessary. Most denials are paperwork failures, not coding tricks, which is why a documentation-first checklist prevents most of them.

It's payment for certain supplies and services a resident receives that fall under Medicare Part B rather than the Part A per-diem, typically when the resident isn't in a covered Part A stay, or for items specifically excluded from consolidated billing. Whether a given item is billable depends on the resident's status, the benefit category, a qualified practitioner's order and medical necessity, and documentation. Verify specifics against current CMS guidance and your payer rules.

During a covered Part A stay, consolidated billing puts billing responsibility on the SNF for most services the resident receives, except for specifically excluded services. That means many items can't be billed separately to Part B while the resident is in that stay. The resident's status on the date of service is the first thing to confirm, because it sets which billing pathway applies.

No. Part B isn't a simple yes or no bucket. Coverage ties to benefit categories, medical necessity, documentation, code selection, and payer rules. The same supply can be billable for one resident and bundled for another depending on status and context. Each item should be reviewed against the applicable category, resident status, documentation, and coverage policy.

Yes. SNF residents who are not in an active Part A stay may be eligible for Part B supply billing under the facility's own NPI. Eligible categories include surgical dressings and wound care supplies, ostomy supplies, urological supplies such as catheters, and tracheostomy supplies. Each claim requires a Standard Written Order, clinical documentation supporting medical necessity, and proof of delivery.

The most relevant signals include resident payer status, admission and discharge dates, active Part A coverage windows, clinical notes tied to supply use, wound assessments, order history, and recurring supply patterns. Together, these signals identify which records belong in a Part B review queue and which can be cleared or excluded.

Most missed opportunities appear as mismatches: a resident has documented supply use in the EHR, but no billing review ever happened. Common causes include untracked payer status transitions, vendor supply deliveries that were never reviewed for facility-side billing, and documentation that exists in the chart but was never connected to a reimbursement review.

SNFs miss Medicare Part B supply reimbursement because no single person owns a supply from the moment it is used to the moment someone decides whether to bill it. Resident status, documentation, supplier billing visibility, and coverage fit often sit with four different people in four different systems. When those facts do not meet, the item may be logged as routine cost, skipped to stay safe, or billed by an outside supplier the facility cannot clearly see. In a Burst review of 21,463 Part B supply claims across 100 facilities over 12 months, nearly half were missing the documentation needed to support payment without extra digging, even though the supplies had been ordered, delivered, and used.

It is usually a documentation and visibility problem before it is a billing problem. The supply may be ordered by one team, charted by another, used during a specific payer window, and reviewed by billing later. When those pieces are not connected, the safe decision is often to skip the claim. That skipped claim may never appear on a report, so leadership does not see the missed reimbursement.

A SNF should verify resident status, a signed order where required, chart support tying the supply to care, proof of delivery or usage, and coverage fit. The team should also confirm the correct code, unit, and billing pathway. If any required support is missing, hold the item until it is clear. Always verify coverage, coding, documentation, and submission decisions against current CMS guidance, payer rules, and the facility's own compliance policies.

In a Burst review of 21,463 Part B supply claims across 100 facilities over 12 months, nearly half were missing the documentation needed to get paid without extra work. At an average claim of $97 and about 15 claims per facility per month, a single facility may leave a little over $17,000 a year sitting unbilled. Across the roughly 13,800 facilities Burst estimates are billing little or none of these supplies, the industry-level opportunity may be around $241 million a year. That industry number is an estimate and should be treated as directional.

Most under-billing is not sloppiness. It is caution. The four things needed to bill a supply correctly, resident status, supply category, signed practitioner order, and proof of delivery, often sit in four different places. When a biller cannot line them up quickly, the safe move is to skip the claim. That skipped claim may never show up on a report, so the loss stays invisible.

Exception tracking means the facility stops reviewing every clean supply line and instead flags only the records that show a specific risk. Common exceptions include no signed practitioner order, unclear resident status, an item that may not be a billable supply, no proof of delivery, unusual quantity, and repeat denial. The team works only the flagged records. This keeps the standard of review while reducing manual workload.