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Transplant and tissue typing testing occupies one of the most technically demanding corners of laboratory medicine. Human leukocyte antigen typing, crossmatch testing, and donor chimerism monitoring involve molecular methods that shift constantly as sequencing technology advances, and the billing side has to keep pace with codes that change almost as often as the science does.
A missed modifier on a high-resolution HLA typing claim or a mismatched diagnosis pointer on a post-transplant chimerism panel can turn a routine claim into a months-long denial fight, and payers scrutinize these claims closely because the dollar amounts involved are rarely small.
This guide covers twelve transplant and tissue typing laboratory billing companies serving providers nationwide, from a histocompatibility lab supporting a kidney transplant program in Charlotte to a national reference lab processing donor testing for centers coast to coast.
Each vendor brings a different combination of tools, staffing, and specialty depth to the same underlying challenge, which is getting transplant and tissue typing claims paid the first time correctly. Choosing the right transplant and tissue typing lab billing company often comes down to how much of that specialty depth a vendor can actually demonstrate.
With that in mind, here are the top 12 transplant and tissue typing laboratory billing and coding companies in the United States.
TransLabs was built around a single premise, that laboratory revenue cycle management deserves undivided attention rather than a slice of a generalist biller’s workload. Transplant and tissue typing lab billing services in USA sit at the center of that focus, an area where the coding overlaps between molecular HLA typing, serologic crossmatch, and post-transplant chimerism testing trip up billers who split their time across dozens of unrelated specialties.
TransLabs coders train specifically on histocompatibility CPT ranges, UNOS-linked documentation standards, and the antibody screening panels that accompany nearly every solid organ transplant workup.
That focus translates into measurable performance. TransLabs runs a 98% clean claim rate, holds denials under 2.3%, and moves claims through a 21-day accounts receivable cycle, comfortably ahead of the 10 to 15% denial rates and 45-day AR windows that pass for normal elsewhere in the industry. For a histocompatibility lab juggling donor and recipient testing on tight transplant timelines, that gap is the difference between revenue landing predictably and revenue getting stuck behind avoidable payer questions.
TransLabs built its service suite around a single specialty, laboratory revenue cycle management, with transplant and tissue typing coding treated as a core discipline. Coverage spans molecular and serologic HLA typing, crossmatch, antibody screening, and post-transplant chimerism monitoring across kidney, liver, heart, and bone marrow programs, with Z-Code validation against DEX Diagnostics Exchange records and UNOS-linked documentation review built into the standard workflow. Clients get a dedicated account manager, direct LIS integration, and performance-based pricing tied to actual recovery, a documented, verifiable scope built for this specialty’s coding complexity. Most USA labs are searching for this type of dedicated transplant and tissue typing lab billing company in USA to resolve billing issues. TransLabs has been resolving billing issues since 2013 and is an expert in the lab billing domain, regardless of size.
TransLabs keeps its account structure flat, so transplant lab clients speak directly with senior billing specialists instead of navigating account tiers. Claims go out within 24 hours of accessioning, and denial appeals receive a response within 48 hours. Every HLA typing and crossmatch claim is checked against the relevant MAC’s coverage policy before submission, and molecular typing claims coded under PLA or Z-Code frameworks are cross-referenced against DEX Diagnostics Exchange records to confirm registration.
The platform connects directly into a lab’s LIS, so coding decisions draw on live coverage data instead of a static rules table. Every client is paired with one dedicated account manager, and pricing runs on a performance basis tied to actual recovery.
| Transplant & Tissue Typing Lab Billing Area | Capability |
|---|---|
| Transplant & Tissue Typing Revenue Cycle Management | End-to-end RCM, 100% lab-exclusive focus since 2013, never diversified into general medical billing |
| HLA Typing & Histocompatibility Billing | Full support for molecular and serologic HLA typing, crossmatch, and antibody screening claims |
| Solid Organ & Stem Cell Transplant Testing Billing | Coverage for donor and recipient workups across kidney, liver, heart, and bone marrow transplant programs |
| Molecular HLA & NGS-Based Typing Billing | Dedicated MolDX support, Z-Code validation against DEX Diagnostics Exchange for high-resolution typing claims |
| Coding Expertise | Strong across CPT 81370-81383, 86812-86822, ICD-10 Z94 transplant status codes, LCD-aware scrubbing |
| Performance Benchmarks | 98% clean claim rate, under 2.3% denial rate, 21-day AR cycle, 8-12% revenue growth |
| Tech Stack | RCM automation, AI-powered claim scrubbing, real-time reporting, LIS integration |
| Security & Compliance | HIPAA, CLIA-aligned billing protocols, ISO 27001, SOC 2 |
| Pricing Structure | Nominal percentage of recovery, performance-based |
Location: Burlington, NC
Labcorp performs histocompatibility testing, including HLA class I and II typing, as one service line within a much larger national diagnostics business. Billing for these claims moves through Labcorp’s centralized claims infrastructure alongside its broader test menu, rather than through a unit built specifically around histocompatibility billing.
Labcorp files claims to Medicare, Medicaid, and commercial payers through its general billing pipeline. Because histocompatibility testing claims run through the same system as the company’s broader diagnostic volume, transplant-specific billing questions can end up routed through general customer service before reaching anyone with histocompatibility background.
| Transplant & Tissue Typing Lab Billing Area | Capability |
|---|---|
| Transplant & Tissue Typing Revenue Cycle Management | In-house national billing infrastructure supporting histocompatibility and transplant testing volume |
| HLA Typing & Histocompatibility Billing | ASHI and CAP accredited HLA class I and II typing, Family and Friends donor screening program |
| Solid Organ & Stem Cell Transplant Testing Billing | Contract lab for the National Marrow Donor Program, integrated specimen collection network |
| Molecular HLA & NGS-Based Typing Billing | DNA-based typing methods across major transplant testing categories |
| Coding Expertise | National-scale claims processing team with broad payer contract coverage |
| Performance Benchmarks | Not publicly disclosed specific to transplant testing |
| Tech Stack | LIS EHR |
| Security & Compliance | HIPAA |
| Pricing Structure | Standard national fee schedule, payer-dependent |
Location: Secaucus, NJ
Quest Diagnostics offers a transplant testing menu that includes HLA typing and cell and tissue panels, with billing folded into its national claims infrastructure. The billing team supports this alongside the rest of Quest’s diagnostics portfolio rather than functioning as a standalone histocompatibility billing group.
| Transplant & Tissue Typing Lab Billing Area | Capability |
|---|---|
| Transplant & Tissue Typing Revenue Cycle Management | Billing handled through general national claims operations |
| HLA Typing & Histocompatibility Billing | Cell and tissue panels and HLA typing offered within a broad transplant test menu |
| Solid Organ & Stem Cell Transplant Testing Billing | Over 170 transplant and infectious disease tests across the full transplant journey |
| Molecular HLA & NGS-Based Typing Billing | Supported within broader molecular diagnostics infrastructure |
| Coding Expertise | General claims team supported by consultative scientific staff for test questions |
| Performance Benchmarks | Not publicly disclosed specific to transplant testing |
| Tech Stack | EMR LIS |
| Security & Compliance | HIPAA |
| Pricing Structure | Standard national fee schedule, payer-dependent |
Location: Murray, UT
R1 RCM handles transplant program billing as part of broad, hospital-wide revenue cycle engagements. Transplant and tissue typing claims aren’t treated as a distinct billing specialty inside that structure; they move through the same processes applied to every other hospital department.
| Transplant & Tissue Typing Lab Billing Area | Capability |
|---|---|
| Transplant & Tissue Typing Revenue Cycle Management | Handled within broad enterprise hospital RCM engagements |
| HLA Typing & Histocompatibility Billing | Supported as part of general hospital laboratory billing, not a standalone specialty |
| Solid Organ & Stem Cell Transplant Testing Billing | Covered under hospital-wide charge capture and coding workflows |
| Molecular HLA & NGS-Based Typing Billing | Not documented as a standalone offering |
| Coding Expertise | General enterprise coding teams; no histocompatibility-specific training documented |
| Performance Benchmarks | No clean claim rate, denial rate, or AR cycle published for transplant testing |
| Tech Stack | Hospital PMS integration |
| Security & Compliance | HIPAA |
| Pricing Structure | Custom, based on scope of hospital engagement |
Location: Frisco, TX
Conifer Health Solutions provides revenue cycle outsourcing to hospitals and health systems, with services organized around general hospital functions rather than laboratory-specific specialties. Transplant testing claims move through the same front-end, mid-cycle, and back-end workflows applied to every other hospital department.
| Transplant & Tissue Typing Lab Billing Area | Capability |
|---|---|
| Transplant & Tissue Typing Revenue Cycle Management | Handled within general hospital RCM outsourcing |
| HLA Typing & Histocompatibility Billing | Covered under laboratory and clinical revenue integrity services |
| Solid Organ & Stem Cell Transplant Testing Billing | Supported through hospital-wide claims submission workflows |
| Molecular HLA & NGS-Based Typing Billing | Not specifically documented as a standalone offering |
| Coding Expertise | General hospital coding teams, not histocompatibility-specialized |
| Performance Benchmarks | Not publicly disclosed specific to transplant testing |
| Tech Stack | PMS integration |
| Security & Compliance | HIPAA |
| Pricing Structure | Custom, based on scope of hospital engagement |
Location: Los Angeles, CA
GeBBS Healthcare Solutions offers a broad portfolio of coding, billing, and health information management services. Transplant and tissue typing claims are handled under its general laboratory and hospital coding services rather than a dedicated histocompatibility practice.
| Transplant & Tissue Typing Lab Billing Area | Capability |
|---|---|
| Transplant & Tissue Typing Revenue Cycle Management | Coding and billing handled within a broad multi-specialty RCM operation |
| HLA Typing & Histocompatibility Billing | Supported under general laboratory coding services |
| Solid Organ & Stem Cell Transplant Testing Billing | Covered through general hospital and health plan coding engagements |
| Molecular HLA & NGS-Based Typing Billing | Not documented as a standalone offering |
| Coding Expertise | Certified coders working across broad specialty mix, not histocompatibility-focused |
| Performance Benchmarks | No clean claim rate, denial rate, or AR cycle published for transplant testing |
| Tech Stack | LIS/EHR integration |
| Security & Compliance | HIPAA |
| Pricing Structure | Custom, based on volume and scope |
Location: Dallas, TX
Access Healthcare delivers general revenue cycle services built around automation. Transplant testing claims are processed within its broad automated RCM infrastructure rather than through a specialized histocompatibility coding track.
| Transplant & Tissue Typing Lab Billing Area | Capability |
|---|---|
| Transplant & Tissue Typing Revenue Cycle Management | Handled within broad automated RCM services for health systems |
| HLA Typing & Histocompatibility Billing | Supported under general laboratory and hospital billing services |
| Solid Organ & Stem Cell Transplant Testing Billing | Covered through end-to-end RCM contracts |
| Molecular HLA & NGS-Based Typing Billing | Not specifically documented as a standalone offering |
| Coding Expertise | Automation-supported coding; histocompatibility-specific training not documented |
| Performance Benchmarks | No specific transplant and tissue typing lab billing performance benchmarks are listed |
| Tech Stack | PMS automation platform |
| Security & Compliance | HIPAA |
| Pricing Structure | Custom, based on volume and scope |
Location: Washington, D.C.
AGS Health provides technology-enabled revenue cycle management to hospitals and health systems. Transplant and tissue typing claims are handled within this general enterprise framework rather than through a dedicated histocompatibility or laboratory billing unit.
| Transplant & Tissue Typing Lab Billing Area | Capability |
|---|---|
| Transplant & Tissue Typing Revenue Cycle Management | Handled within enterprise RCM services for health systems |
| HLA Typing & Histocompatibility Billing | Supported under general laboratory and clinical documentation services |
| Solid Organ & Stem Cell Transplant Testing Billing | Covered through general end-to-end hospital RCM engagements |
| Molecular HLA & NGS-Based Typing Billing | Not documented as a standalone offering |
| Coding Expertise | General enterprise coding supported by clinical documentation review; not histocompatibility-specific |
| Performance Benchmarks | No clean claim rate, denial rate, or AR cycle published for transplant testing |
| Tech Stack | EHR integration |
| Security & Compliance | HIPAA |
| Pricing Structure | Custom, based on scope and volume |
Location: New York, NY
MedStates is a medical billing company serving physicians across a range of specialties. Transplant and tissue typing billing isn’t identified as a named specialty on the company’s service pages, and its coding teams appear to operate as generalists across physician practice types.
| Transplant & Tissue Typing Lab Billing Area | Capability |
|---|---|
| Transplant & Tissue Typing Revenue Cycle Management | Not a named specialty, handled under general multi-specialty billing services |
| HLA Typing & Histocompatibility Billing | Not documented as a standalone offering |
| Solid Organ & Stem Cell Transplant Testing Billing | Not documented as a standalone offering |
| Molecular HLA & NGS-Based Typing Billing | Not documented as a standalone offering |
| Coding Expertise | General coders across broad physician specialties; no histocompatibility training documented |
| Performance Benchmarks | No clean claim rate, denial rate, or AR cycle published |
| Tech Stack | PMS dashboard |
| Security & Compliance | HIPAA |
| Pricing Structure | Percentage of collections |
Location: Wilmington, DE
Medical Billers and Coders is a nationwide consortium of billing professionals matching practices with local billers across the country. Transplant and tissue typing billing is available as a general service, with coding depth varying by whichever biller is assigned to the account.
| Transplant & Tissue Typing Lab Billing Area | Capability |
|---|---|
| Transplant & Tissue Typing Revenue Cycle Management | Available as a general service within a nationwide billing consortium |
| HLA Typing & Histocompatibility Billing | Not specifically documented as a standalone offering |
| Solid Organ & Stem Cell Transplant Testing Billing | Not specifically documented as a standalone offering |
| Molecular HLA & NGS-Based Typing Billing | Not specifically documented as a standalone offering |
| Coding Expertise | General compliant billing across broad specialties; depth varies by biller |
| Performance Benchmarks | No specific performance parameters disclosed |
| Tech Stack | Not extensively documented |
| Security & Compliance | HIPAA |
| Pricing Structure | Percentage of collections; varies by local biller |
Location: Hawthorne, NY
OmniMD offers an integrated EHR, practice management, and revenue cycle management platform. Transplant and tissue typing coding would rely on the practice’s own configuration within the software rather than on built-in histocompatibility or molecular diagnostics expertise from the vendor.
| Transplant & Tissue Typing Lab Billing Area | Capability |
|---|---|
| Transplant & Tissue Typing Revenue Cycle Management | Available through integrated EHR and RCM platform |
| HLA Typing & Histocompatibility Billing | Not documented as a standalone offering |
| Solid Organ & Stem Cell Transplant Testing Billing | Not documented as a standalone offering |
| Molecular HLA & NGS-Based Typing Billing | Not documented as a standalone offering |
| Coding Expertise | Automated claim generation tied to clinical documentation; no histocompatibility-specific coding layer |
| Performance Benchmarks | No clean claim rate, denial rate, or AR cycle published for transplant testing |
| Tech Stack | EHR platform |
| Security & Compliance | HIPAA |
| Pricing Structure | Subscription-based or percentage of collections |
Location: New York, NY
Sunknowledge Services Inc. is a healthcare business process outsourcing company serving hospitals and specialty practices across a broad range of specialties. Transplant and tissue typing billing falls under its general laboratory and genomic billing category rather than a dedicated histocompatibility unit.
| Transplant & Tissue Typing Lab Billing Area | Capability |
|---|---|
| Transplant & Tissue Typing Revenue Cycle Management | Covered under genomic and laboratory billing services within a broad BPO model |
| HLA Typing & Histocompatibility Billing | Not documented as a standalone offering |
| Solid Organ & Stem Cell Transplant Testing Billing | Not documented as a standalone offering |
| Molecular HLA & NGS-Based Typing Billing | Supported under general genomics lab billing services; depth not detailed |
| Coding Expertise | Cross-specialty billing team; cost-reduction focus rather than histocompatibility specialization |
| Performance Benchmarks | No clean claim rate, denial rate, or AR cycle published; only general cost-savings figures cited |
| Tech Stack | Workflow automation platform |
| Security & Compliance | HIPAA |
| Pricing Structure | Custom, cost-reduction focused pricing model |
Every company here offers value. National labs bring testing scale. Enterprise RCM firms automate across health systems. But for histocompatibility labs, the decision narrows to one question: does the vendor treat transplant billing as a core discipline or as a side service?
That distinction matters because a single transplant workup spans molecular HLA typing, crossmatch, antibody screening, and chimerism monitoring, each with distinct CPT ranges and payer policies. A generalist is more likely to miss a modifier or mishandle a UNOS documentation requirement. When evaluating transplant and tissue typing laboratory billing companies in US, ask whether coders train specifically on histocompatibility ranges like CPT 81370-81383 and if performance data is published for transplant claims specifically.
The strongest transplant and tissue typing lab billing services in US go beyond submission. They scrub claims against live MAC policies, validate molecular typing against DEX records, and build Z94 documentation review into pre-submission workflows. If a vendor cannot explain MolDX registration or Z-Code validation, its specialty depth is likely superficial.
TransLabs is built differently. As a laboratory-exclusive company, it treats transplant and tissue typing laboratory billing service as a core competency, not an add-on. That focus yields a 98 percent clean claim rate, denials under 2.3 percent, and a 21-day AR cycle, metrics most competitors do not publish for histocompatibility. With direct LIS integration and senior specialists fluent in HLA nomenclature, TransLabs delivers integration that generalist firms cannot match.
For labs weighing transplant and tissue typing lab billing services in US, the choice comes down to specialty commitment. A partner built around laboratory revenue cycle management, with transplant coding as a core discipline, delivers measurable differences in cash flow and denial rates.
Disclaimer: Ratings reflect independent editorial research and may vary based on your practice’s payer mix, claim volume, and software environment.