Home Specialities Infusion Therapy
Biologic + therapeutic
high-drug-cost billing
Infusion-certified coders
chart & NDC review
All major payers
commercial, Medicare & MA
Underpayment recovery
on claims marked paid
The shortfall isn't in the rejection — it's in the milligrams.
Ask an infusion center where the pain is and the answer is always prior auth. Real, but loud — not costly. The costly one clears cleanly and pays short: a shorted drug conversion, a truncated hour, a wastage line quietly zeroed.
Across the 29 infusion therapy revenue cycles we've analyzed, an average of 5.1–9.2% of gross revenue is withheld this way. On a $14M center, that's $714K–$1.29M a year — and it compounds over every payer-contract cycle.
See it on your claimsWhat 5.1–9.2% looks like on a $14M center
The 5.1–9.2% range reflects OneMed's analysis of 29 infusion revenue cycles; the dollar figures apply that range to a $14M example center. Your actual exposure depends on payer mix, drug mix, and documentation.
Five places the milligrams go missing.
Infusion billing is a maze of J-codes, NDC crosswalks, time-based units, and strict hierarchies. High-volume payer systems lean on that complexity, and the shortfalls settle into claims you already booked as paid.
NDC-to-J-code crosswalk shortfall
Payers convert the reported NDC in the manufacturer's unit, e.g. mL, to J-code units (e.g. 10 mg) using crosswalk tables. Outdated tables, the wrong conversion factor, or mapping to a cheaper equivalent NDC mean fewer milligrams are reimbursed than administered — silently underpaying the drug by 10–30%.
Time-based unit truncation
96365 covers the initial hour and 96366 each additional hour, and 96366 requires documented exact start and stop times over the threshold. If the note says "infused over two hours" without exact times, payers silently drop the 96366 and pay only the initial hour.
Infusion hierarchy misapplication
With multiple infusions in one session, only one "initial" service is billed, by a strict national hierarchy: chemotherapy, then therapeutic, then hydration, then IV push. Payer rules sometimes pay the cheaper hydration code as primary and bundle or downcode the therapeutic infusion.
Drug wastage (JW / JZ) trap
Single-dose vials rarely match the prescribed dose; the discarded remainder is billable wastage on a separate JW line. Payers routinely pay the primary drug line but zero the JW line for "missing documentation" — even when it's charted.
"Incidental" supply bundling
IV start kits, flushes, and administration supplies are separately reimbursable under many contracts and specific Medicare guidelines — but payer bundling edits treat them as incidental and pay $0 unless billed with the right modifiers.
The clock doesn't lie — and neither does the CPT rule.
Take time-based units. Infusion administration is tiered — CPT 96365 for the initial hour, 96366 for each additional hour, and 96366 requires documented exact start and stop times over the threshold.
When the record says "infused over two hours" without exact times, payers silently drop the 96366 and pay only the initial hour. The rule is public and you can check it against your own remits — across thousands of longer infusions, those dropped hours add up fast.
See it on your own claimsA 2h 15m infusion, paid short
The 96365/96366 time-tiered rule is standard CPT; the ~$100 additional-hour value is illustrative — confirm against your contracted rates. Actual exposure depends on your infusion volume and durations.
Nobody's checking the milligrams against the math
It isn't effort. No team can hand-reconcile NDC math and start-stop times across thousands of infusions a month.
The "paid means paid" blind spot
Attention goes to $0 rejections. When a claim says paid, the file closes — no one re-checks 8,000 infusions against the NDC crosswalk for silent drug-cost shortfalls.
No crosswalk verification
Re-checking NDC-to-J-code conversions on hundreds of biologic claims a month by hand isn't realistic for a standard billing team.
No time-based unit auditing
Most centers assume a documented two-hour infusion was paid for two hours — they never check the remit to see whether the 96366 units were truncated.
We audit the milligrams, the minutes, and the modifiers.
Infusion-certified coders inside your existing system. No EHR change, no disruption — human eyes on the nursing notes and NDC detail that rigid payer rules never open.
ClearView operational visibility
Our ClearView dashboard gives leadership real-time visibility — flagging when a biologic paid at $8,200 against a $9,800 NDC-crosswalk expectation, or a time-based infusion paid at the base rate — without changing how your staff logs in.
Expert clinical chart audit
Flagged claims route to our infusion-certified coders, who work inside your system to read the nursing notes, verify exact start and stop times, confirm the NDC matches the drug administered, and check wastage documentation.
Targeted clinical appeal
We draft a documentation-backed appeal — the exact clinical and NDC detail that supports the correct payment.
Payer pattern mapping
We track which payers truncate your 96366 units or drop your JW lines, and pursue systematic corrections and contract fixes — not just one claim at a time.
The 2026 OneMed Infusion Revenue Leak Index.
Not a model, not one success story — the pooled result of every infusion cycle we audited in the last 18 months.
29
infusion revenue cycles audited
198,000+
claims audited
$3.51M
recovered for clients
90.7%
recovery rate on appeals
Of that $3.51M, here's where it had been hiding. The costliest drugs and longest infusions get underpaid the most — it's the baseline, not the exception.
| Underpayment pattern | Share of recovered value |
|---|---|
| NDC-to-J-code crosswalk shortfalls | 31% |
| Infusion hierarchy misapplications | 22% |
| Time-based unit truncations | 19% |
| Drug wastage (JW/JZ) traps | 18% |
| "Incidental" supply bundling | 10% |
Aggregated across OneMed infusion underpayment audits over the trailing 18 months ($3.87M identified, $3.51M recovered). Individual results vary by payer, documentation, and contract terms.