Infusion Billing Services for Infusion Centers and Practices
Every infusion claim has two halves. One is an expensive drug you may have bought before the payer agreed to cover it. The other is a set of administration codes that depend on the start and stop times in the nurse’s notes. If either half is wrong, you’re looking at a large denial or an underpayment that nobody catches. Salyx RCM offers infusion billing services that cover both halves for infusion centers, physician offices with infusion suites and home infusion providers.
Where infusion claims go wrong
Drug units and NDCs
HCPCS drug codes are billed in the units the code descriptor defines, which often isn't the vial size or the ordered dose. Turning a 500 mg dose into units for a code defined per 10 mg is easy math, but one slip can multiply the payment or trip a medically unlikely edit (MUE). Medicaid and many commercial plans also want the 11-digit NDC with the right qualifier, unit of measure and quantity, and it has to match the drug actually given.
JW and JZ modifiers
For drugs from single-dose containers, Medicare Part B requires JW on a separate line for any discarded amount, and JZ when nothing was discarded. Waste has to be documented in the record. Commercial plans differ on whether, and how, they pay for discarded drug.
Administration hierarchy
Chemotherapy and complex biologic administration (96413 and related codes) ranks above therapeutic, prophylactic and diagnostic infusions (96365 to 96368), which rank above hydration (96360 and 96361). Generally only one initial service is reported per encounter, with sequential, concurrent and additional-hour codes added under CPT rules. Missing stop times are one of the most common reasons administration is under-coded or denied.
Authorization and site of care
Biologics, immune globulin, monoclonal antibodies and many specialty drugs need authorization tied to diagnosis, dose, frequency and number of doses. Re-authorization often asks for updated labs or progress notes. Many commercial plans also have site-of-care policies that move patients from hospital outpatient departments to infusion centers or the home, with different rules for each.
Buy-and-bill or white bagging
Buy-and-bill drugs are paid from the payer's fee schedule or contract, often based on Average Sales Price, which Medicare updates every quarter. When a plan requires specialty pharmacy dispensing, you bill only for administration. Posting has to keep those cases apart, or underpayments on high-cost drugs slip through.
Home infusion
A home infusion claim combines the drug, supplies and equipment, and nursing or professional services. Medicare splits coverage across Part B (including the home infusion therapy benefit for certain drugs given through an external pump), Part D and DME rules, while commercial plans often pay per diem codes. Each payer's structure needs mapping before the first claim.
Our Services
How Salyx RCM supports infusion providers
Benefits verification
Medical versus pharmacy benefit, site-of-care rules, deductibles and coinsurance are confirmed before the first dose as part of our benefits verification, so patients aren't surprised later.
Prior authorization
Requests go in with the clinical support each payer expects. We track approved units and dates and start re-authorization before the current approval ends.
Drug and administration coding
Units, NDCs, JW/JZ use and the administration hierarchy are checked against the infusion record by our certified medical coders before anything is billed.
Claim submission
MUE, NCCI and payer-specific edits are cleared first, and each claim goes out in the format that payer requires.
Underpayment review
During payment posting, drug and administration lines are posted separately and each drug payment is compared with the contracted or fee schedule rate.
Denials and appeals
Our AR team works authorization, medical necessity, unit and NDC denials, and builds appeals with the clinical records payers ask for.
Credentialing
Supervising physicians, advanced practice providers and facility locations are enrolled with the payers you serve through our credentialing team.
Patient balances
Coinsurance on a high-cost drug can be a shock. Statements spell it out, and our staff can walk patients through what they owe.
Reporting
You'll see AR by payer and drug, upcoming authorization expirations and denial trends.
Working in your system
Infusion centers and physician offices often run on systems like athenahealth, eClinicalWorks or NextGen, and many home infusion providers use CareTend. We work in those and others, so drug records and charges stay where they are, handled under HIPAA-compliant processes.
How It Works
Our process
1. Discovery call
We look at your drug list, payer mix, acquisition models and billing system.
2. Payer mapping
Each major payer's authorization, NDC and waste reporting rules get written down.
3. Onboarding
We sign a Business Associate Agreement, then set up secure access, charge review checklists and a way to reach your clinical staff with documentation questions.
4. Daily operations
Verification, authorizations, coding review, claims, posting and follow-up are handled every working day.
5. Regular review
Denial causes, underpayments and upcoming re-authorizations are reviewed with your managers.
Related reading
Home health
Patients often move from the infusion chair to home care. See how we handle home health billing for agencies.
Re-authorizations
Our post on prior authorization delays covers gaps in recurring treatment.
Claim edits
Learn what happens to a claim in the seven minutes before a denial.
Frequently Asked Questions
Answers to questions infusion centers and practices ask us.
1. How do you calculate billing units for infusion drugs?
We divide the administered dose by the amount in the HCPCS descriptor, apply the payer’s rounding rules, and check the result against the record and the MUE limit before the claim goes out.
2. Do you apply the JW and JZ modifiers for Medicare?
Yes. Discarded amounts from single-dose containers are reported with JW, and JZ is used when nothing was discarded. We also confirm that the waste is documented.
3. Can you help with prior authorization for biologics and immune globulin?
Yes. We submit requests with the documentation the payer requires, track approved doses and dates, and start re-authorization before an approval runs out.
4. Do you bill home infusion as well as infusion center services?
We support both. Home infusion means mapping each payer’s structure for drugs, supplies, equipment and nursing, so that’s set up during onboarding.
5. How do you catch drug underpayments?
At posting, each drug line’s payment is compared with the contracted or fee schedule rate. Variances go to follow-up for correction or appeal.
Other specialties we serve
Salyx RCM also handles billing for these related specialties.
DME Billing
Written orders, modifiers, capped rentals and resupply.
Hospice Billing
NOE timing, levels of care, certifications and the hospice cap.
Laboratory Billing
Requisitions, medical necessity, CLIA, toxicology and molecular tests.
Multi-Specialty Billing
E/M leveling, modifiers and global surgery across departments.
Get help with infusion billing
Infusion denials are big because the drugs are expensive. If unit errors, waste reporting or lapsed authorizations keep showing up in your denials, we’d be glad to go through them with you in a free consultation. Our number is (321) 788-3655, or email info@salyxrcm.com.