Specialty
Rheumatology Medical Billing
Infusion time, biologic drug waste, and prior authorisations that expire mid-course.
What makes rheumatology billing different
Rheumatology revenue concentrates in infusions and injectable biologics, where the money is in units and minutes rather than in the visit. Infusion codes depend on documented start and stop times, and a first-hour code billed without them is indefensible on audit.
The drugs themselves are the larger exposure. Biologics are expensive enough that a single unbilled unit or unclaimed wastage matters, and buy-and-bill practices carry the acquisition cost until the claim pays.
Infusion start and stop times missing
96413 and its add-ons are time-based. Without documented times the code hierarchy collapses and only the lowest is defensible.
Drug wastage not billed
Single-use vial remainder is billable with modifier JW where the payer allows it, and is routinely discarded unclaimed.
Units miscounted on J-codes
J-code units are defined per milligram, not per vial. A dosing-to-units conversion error repeats on every claim until somebody checks.
Authorisation expiring mid-course
Biologic authorisations cover a period or a number of doses. When one lapses between infusions, the drug has already been given.
Ask any billing company this
“How do you handle drug wastage, and what is my JW modifier volume?”
A company that bills your specialty properly will answer this in one sentence. A company that treats every specialty the same will answer it with a brochure.A note on accuracy. Coding rules, coverage policies and payer edits change continually, and the specifics above reflect general practice rather than any individual payer contract or local coverage determination. Treat this page as a map of where to look, not as coding advice for a particular claim.