Infectious disease billing for office infusion benefits
Infectious disease billing often involves office-based infusions and long courses of antimicrobial therapy. Coverage depends on whether the drug falls under the medical or pharmacy benefit, which we confirm before the first infusion. For Medicare patients who continue IV antibiotics at home, the home infusion benefit and Part D bring other billers into the picture, so we confirm which services the practice bills. Our eligibility team checks benefits for each drug before the first dose.
Authorization for antimicrobials and HIV medicines
Long-acting injectable HIV treatments and specialty antimicrobials often need authorization. HIV pre-exposure prophylaxis is a preventive service under the Affordable Care Act for most plans, which limits patient cost sharing when coded correctly. Requests for restricted antimicrobials should include culture results and prior therapy, since many plans reserve them for documented resistance or treatment failure.
Coding infusions and injections
| Code | Descriptor (summary) |
|---|---|
| 96365 | IV infusion for therapy, prophylaxis or diagnosis; initial, up to 1 hour |
| 96366 | Each additional hour |
| 96372 | Therapeutic, prophylactic or diagnostic injection; subcutaneous or intramuscular |
Only one initial service is billed per encounter, chosen by the primary reason for the visit. Start and stop times support additional hours, and hydration given alongside a therapeutic infusion is billed only when separately necessary and documented. Organism codes B95 through B97 add detail when the infecting agent is known.
Claims and denials in infectious disease
Drug claims are denied when units, NDC details or diagnoses do not match payer policy. Travel vaccines are often excluded and should be identified as patient-pay in advance. HIV and other sensitive diagnoses call for care with how statements and payer notices are routed, following state privacy rules.
Infectious disease AR follow-up
High-cost drug claims are followed up soon after submission and compared with contract rates, since a short payment on a specialty drug can be large.
When infusion claims deny, the same checks used in eligibility verification and prior authorization prevent most rework, and worked denials follow the process in denial management. Practices comparing specialties can also review pathology billing and internal medicine billing for related laboratory and office-visit rules.
Infectious disease billing: infusions, consults, and follow-ups
Infectious disease medical billing spans three settings that rarely share a workflow: inpatient consults with their own documentation rules, outpatient infusion services with drug and administration coding, and telehealth follow-ups for chronic infections. The revenue leaks are predictable — infusion administration units that do not match the drug units, consult codes downcoded for thin documentation, and telehealth place-of-service errors. We check all three before the claim goes out and work the denials against the setting that produced them. Related: free medical billing audit, medical billing services, pricing.