Allergy and Immunology Billing Services in Fort Collins, Colorado

We lead with denials because in allergy billing that is where the money is. Most lost revenue is not a rejected claim you can see; it is an underpaid one you never notice, or a recoupment that lands months later.

The through-line is unit counting and buy-and-bill. Skin and intradermal testing is reported per individual test, with units set to the number of tests and kept inside each payer's annual cap and MUE — never collapsed into a single panel unit. Antigen preparation is billed from the mixing log at one cc per dose, with ten billable doses per multidose vial for Medicare, and venom immunotherapy counted by the number of venoms. Get those wrong and you either underpay yourself or invite a takeback; get them right, every time, and the practice becomes predictable.

Two of those rows deserve special attention in a market like Fort Collins. The underpaid skin panel is the silent killer: nothing is denied, so nothing looks broken, but a 40-prick workup billed as a single unit collects a fraction of what the payer owes, and over a busy testing season that gap is real money the practice simply never sees. The over-billed antigen line is the opposite risk — it pays fully at first, then triggers a recoupment and, on clinical-judgment dosing, a compliance inquiry. We hold both edges: enough units to be paid what you earned on testing, never one more dose than the mixing log supports on prep. That balance is exactly what a generalist biller, working from habit rather than the log, cannot reliably strike.

Northern Colorado's commercial skew changes the game compared with a Medicare-heavy metro. Commercial payers here are aggressive on biologic prior authorization and on medical-versus-pharmacy benefit routing, so a severe-asthma or chronic-urticaria drug that runs past thirty thousand dollars a year per patient has to clear authorization, exact HCPCS unit math, and the correct benefit lane before it is ever administered. A university town also brings eligibility churn — students and seasonal residents change plans — which turns a clean multi-year immunotherapy schedule into a mid-course denial if no one re-verifies. Immunotherapy is a relationship with the payer, not a single visit, and we treat it that way by re-checking coverage rather than assuming it holds.

There is a documentation dimension too. Skin-testing results, the mixing log, the wastage record on single-dose biologics, and the note behind any same-day problem visit all have to line up, because that is the exact paper trail Novitas and commercial auditors request when they pull an allergy chart. We work the front of the revenue cycle so the documentation and the claim tell the same story, rather than scrambling to assemble records after a denial or an audit letter arrives. Modifier 25 is a good example: it belongs only on a genuinely distinct, documented E/M performed the same day as a shot, never on the routine injection itself, and the note has to prove the separate service. Attach it reflexively and you earn a payer flag; omit it when a real problem visit happened and you leave a legitimate service unpaid. Knowing which case you are in — and having the documentation to back it — is specialty work, and it is the kind of judgment a Fort Collins practice should not have to teach a new biller every quarter.