Specialties

Billing behaves differently
in every specialty.

The revenue cycle is the same eight disciplines everywhere. What changes is which code sets recur, where denials cluster and what each payer asks for. These pages set out how billing actually behaves in each specialty.

AnesthesiologyAnesthesia billing requires accurate time tracking, modifiers, and concurrency rules to ensure every claim is billed correctly.Behavioral HealthBehavioral health billing requires accurate time-based coding, authorization tracking, and documentation to maximize reimbursement and prevent claim denials.CardiologyDiagnostics, interventions and device follow-up, each with its own bundling rules.ChiropracticMaintenance-versus-active-treatment is the line most chiropractic denials sit on.DentalTwo code sets, two claim forms, and a constant medical-versus-dental question.DermatologyHigh procedure volume where lesion counts, sizes and sites drive the code.EndocrinologyChronic care management where time and complexity carry the reimbursement.GastroenterologyScreening or diagnostic — one word in the record changes who pays.Internal MedicineBroad scope, high visit volume, and E/M levels that decide the margin.LaboratoryHigh volume, low unit value, and medical necessity checked on every panel.NephrologyMonthly capitation for dialysis, fee-for-service for everything else.NeurologyDiagnostics with separate professional and technical components.Ob/GYNGlobal obstetric packages that break the moment care is transferred.Occupational TherapyTimed units, the eight-minute rule, and caps that arrive without warning.OncologyDrug acquisition cost means a coding error can cost more than the visit.OphthalmologyTwo E/M systems, and diagnostics with their own frequency rules.OrthopedicsGlobal surgical periods, bundling, and the modifiers that survive an audit.Pain ManagementAuthorisation-heavy procedures with strict frequency and imaging rules.PathologySpecimen-level billing where the block and stain count drive the claim.PediatricVaccines, well-child schedules, and two claims from a single visit.Physical TherapyThe eight-minute rule, plans of care, and caps that stop payment mid-course.PodiatryRoutine foot care is excluded by default — coverage has to be established.PulmonologyFunction testing, sleep studies and critical care, each billed differently.RadiologyProfessional and technical splits on effectively every study.RheumatologyBiologics, infusions and prior authorisation on almost everything.Sleep MedicineIn-lab versus home testing, and equipment billed on a rental clock.UrologyOffice procedures, imaging and pathology, often from a single visit.Workers’ CompensationA different payer, a different fee schedule, and paperwork that gates payment.

What changes

6 things that differ from one specialty to the next

The disciplines are constant. These are the variables they have to be tuned to, and they are why a generic billing workflow underperforms in a specialty practice.

Which codes recurEvery specialty leans on a narrow band of codes it bills constantly. Accuracy inside that band matters far more than breadth across the code set, and it is where specialty-specific review pays for itself.

How the encounter is measuredSome specialties bill time units, some bill timed treatment units, some sit inside a surgical global period, and some split into professional and technical components. The unit of billing changes what a claim is worth.

Where authorisation sitsIn some specialties prior authorisation is routine and in others it is rare. That single difference decides whether verification is a front-desk task or a function that needs to be staffed properly.

Which denials clusterMedical necessity, bundling, modifier and frequency denials do not fall evenly across specialties. Knowing which cluster is likely is what makes prevention possible rather than reactive.

How the payer mix behavesA practice billing mostly Medicare works to different rules, timelines and appeal routes than one billing mostly commercial plans, Medicaid or workers’ compensation. The mix shapes the whole AR strategy.

What the documentation has to proveThe clinical note has to support the code. What counts as support differs by specialty, which is why coding feedback to clinicians is specialty-specific or it is ignored.

Common questions

Questions specialty practices ask

Why does specialty matter if the billing rules are national?

The rules are national; the exposure is not. Two practices can follow the same regulations and lose money in completely different places, because they bill different codes, meet different authorisation requirements and attract different denials. The discipline is the same — where it has to be tightest is not.

We are a multi-specialty group. Does this still apply?

More so. A multi-specialty group carries several denial profiles and several authorisation burdens at once, under one tax ID and often one billing team. The usual failure is applying one specialty’s workflow to all of them.

Our specialty is not on the list. Does that mean it is not covered?

No. The list covers the specialties documented on this site, not the limit of the work. The revenue cycle disciplines are the same everywhere — what changes is described on these pages. Scope is set by the service agreement.

Is specialty billing a different service from general medical billing?

No. It is the same disciplines — billing, coding, denial management, AR management, credentialing, eligibility verification, patient support and front office management — with the emphasis placed where that specialty actually loses money.

Does credentialing differ by specialty?

The process is the same, but the panels, the taxonomy codes and the supporting documentation differ, and some specialties have enrolment requirements that others never encounter. A lapse costs the same in any of them: the work is done and cannot be billed.

Where should we start if we are not sure what is wrong?

A revenue assessment. It reviews the cycle end to end rather than the stage where the symptom showed up, because in a specialty practice the two are rarely the same.

All frequently asked questions The eight disciplines

Revenue assessment

Not sure where yours is leaking?

The assessment starts from how your revenue cycle actually runs today, whatever you practise.

Billing behaves differentlyin every specialty.