Top 15 Serology and Infectious Disease Lab Billing Companies in USA 2026

Serology and infectious disease lab billing carries a coding burden that general lab billing doesn’t. Antibody and antigen testing falls under the CPT 86xxx range. At the same time, direct pathogen detection, culture, and multiplex molecular panels sit under CPT 87xxx, and payers apply National Correct Coding Initiative edits aggressively when multiple components of a syndromic panel are billed together. A lab running a respiratory or gastrointestinal pathogen panel needs coders who understand which component codes bundle into the panel code and which can be billed separately, since getting this wrong triggers denials or, worse, audit flags for unbundling.

Modifiers matter more here than in many other lab categories. Modifier 91 identifies a repeat clinical diagnostic test performed on the same day, which is common in serology when titers are rechecked. Modifier 59 separates distinct procedural services to prevent incorrect bundling denials on panel components. Modifier QW flags CLIA-waived testing, relevant for rapid antigen and point-of-care serology assays, while modifier 26 and TC split professional interpretation from technical performance on select infectious disease diagnostics. Missing or misapplying any of these is one of the more common reasons infectious disease lab claims get kicked back.

Payer involvement adds another layer. Medicare Administrative Contractors publish Local Coverage Determinations that define which infectious disease and serology tests are covered, for which diagnoses, and how often, and these LCDs update often enough that a coding team needs to monitor them actively rather than periodically. Commercial payers frequently apply their own medical necessity policies on top of LCDs, and during periods of high testing demand, such as seasonal respiratory illness surges, payers have tightened documentation requirements around symptomatic versus asymptomatic testing. A laboratory’s revenue cycle depends on coders who can document medical necessity correctly the first time, rather than relying on appeals after the fact.

This creates real variation among laboratory coding services and laboratory billing and coding companies operating in this space. Some companies, like TransLabs, Wise Medical Billing, and iRCM, run named infectious disease and lab billing service lines. Others fold serology billing into a much broader specialty list, and a few smaller, less-documented companies require direct verification before trusting them with infectious disease-specific claims. The comparison below looks at all 15 serology and infectious disease lab billing companies through that lens.

1. TransLabs
2. Credex Healthcare
3. Mastermind Healthcare
4. AltuMed
5. Zoo Health
6. Wise Medical Billing
7. Intella Services
8. iRCM
9. Cure Med
10. Sirius Solutions Global
11. Reventage Medical Billing
12. BillingCare Solutions
13. RCM Workshop
14. Health Cell
15. Hawk Revenue Group