● ADJUSTER RESOURCE GUIDE
What they are, what's covered, how billing works, and how to coordinate them — everything adjusters need to know about ancillary services on workers' comp claims.
Ancillary services are all medical services, equipment, and support programs provided to an injured worker that fall outside of physician office visits, hospital care, and surgery. They are a core component of most workers' compensation claims — and they are typically where the highest coordination complexity and billing risk live for adjusters and TPAs.
When a treating physician orders a wheelchair, arranges for a visiting nurse, requires a ramp installation so the claimant can get in and out of their home, or prescribes IV antibiotic therapy for a post-surgical infection — those are all ancillary services. They are covered under workers' compensation when medically necessary and properly authorized, and they are billed in accordance with each state's workers' compensation medical fee schedule.
Ancillary services typically represent 15-30% of the total cost of a workers' comp claim. Coordinating them well — fast setup, compliant billing, minimal friction with the carrier — directly accelerates claim resolution and lowers total medical cost.
● TYPES OF ANCILLARY SERVICES
DME includes any equipment prescribed for home use during recovery — wheelchairs, walkers, crutches, orthopedic braces, hospital beds, TENS units, CPAP/BiPAP machines, and thousands of other items. It is the most common ancillary service type on workers' comp claims, appearing on the vast majority of musculoskeletal injury cases.
Billing: Billed using HCPCS L-codes (orthotics/prosthetics) or E-codes (equipment), capped at the state fee schedule rate. Rental vs. purchase decisions affect total claim cost. Learn more about workers' comp DME →
Home health services bring skilled clinical care into the injured worker's home — skilled nursing (wound care, medication management, catheter care), physical therapy, occupational therapy, speech therapy, and home health aide services. These services allow workers to continue recovering at home rather than in a facility, which reduces total claim cost substantially.
Billing: Billed per visit using CPT codes for skilled nursing (99500-series) and therapy (97000-series). Fee schedule rates vary significantly by state. Learn more about workers' comp home health →
When an injured worker's home is not accessible due to their injury — stairs they cannot climb, a bathroom they cannot navigate, doorways too narrow for a wheelchair — home modifications bring the home into compliance with their current functional limitations. Modifications include ramps, grab bars, roll-in showers, widened doorways, stair lifts, and ceiling lifts. CHAMP-certified assessors evaluate the home and design cost-effective solutions.
Billing: Temporary vs. permanent modifications are categorized differently. Costs are negotiated or covered at reasonable and customary rates depending on the state. Learn more about CHAMP-certified home modifications →
Home IV infusion therapy allows injured workers who require intravenous medications — antibiotics for post-surgical infections, osteomyelitis treatment, pain management infusions, IVIG — to receive care at home instead of in a hospital or infusion center. Home infusion typically costs 60-80% less than facility-based infusion and keeps the claimant out of a hospital setting during recovery.
Billing: Billed using J-codes for drugs, CPT 96365-96375 for administration, and supplemental supply codes. Among the most billing-complex ancillary service types. Learn more about workers' comp IV infusion →
High-acuity workers' comp claims — severe burns, traumatic brain injury, spinal cord injury, bilateral amputations — require active care coordination across multiple service lines. A dedicated complex care or catastrophic care coordinator manages all ancillary services, communicates with the treating team, and serves as the single point of contact for the adjuster. Without active coordination, these claims generate duplicative services, billing errors, and unnecessary facility readmissions.
Billing: Case management fees billed per hour or per case, with all ancillary services billed separately under the fee schedule. Learn more about catastrophic care →
As injured workers progress through recovery and transition toward return-to-work, wellness equipment programs support functional restoration — TENS units, CPAP/BiPAP for comorbid sleep apnea, home gym equipment prescribed for supervised exercise programs, and ergonomic return-to-work tools. These programs reduce recurrence risk and shorten claims duration when deployed at the right time in recovery.
Billing: Wellness equipment billed under HCPCS, subject to state fee schedule. Program fees vary by state authorization rules. Learn more about wellness equipment programs →
● BILLING & AUTHORIZATION
The treating physician issues an order for the ancillary service. The adjuster or case manager submits a referral to the ancillary service provider. The provider contacts the carrier or TPA to obtain prior authorization — confirming that the service is medically necessary, within scope of the accepted claim, and covered at the applicable fee schedule rate.
Some states allow workers' comp carriers to require their own approved provider networks; others allow any licensed provider to deliver ancillary services as long as billing complies with the state fee schedule. HealthCare Comp understands these rules in every state.
Every state sets its own workers' compensation medical fee schedule — a schedule of maximum reimbursement rates for each procedure code. Ancillary service providers must bill at or below these rates and submit claims with correct codes, modifiers, and clinical documentation.
A billing error — wrong code, missing modifier, undocumented medical necessity — can result in claim denial or reduced payment. HealthCare Comp's specialists are trained in workers' comp coding for every service type and submit clean claims on every case.
● FAQ
Medical treatment refers to physician visits, surgery, imaging, and hospital care. Ancillary services are supportive services delivered alongside medical treatment — equipment, nursing, home modifications, IV therapy, and therapy programs. Both are covered under workers' comp when medically necessary.
This depends on the state. Some states allow workers to select their own providers; others require the carrier's approved network. In states with mandatory networks, using an out-of-network ancillary provider can result in billing disputes or non-payment. Always confirm network requirements before referring.
By coordinating all service lines under one provider, HealthCare Comp eliminates duplicate service orders, ensures fee-schedule compliance (preventing overbilling), accelerates authorization, and reduces delays that extend claims duration. Single-source coordination consistently lowers total ancillary spend versus managing multiple vendors.
Yes. HealthCare Comp works with all major workers' compensation carriers, TPAs, and self-insured employers. We handle the authorization and billing workflow for each carrier's specific requirements.
● RESOURCES FOR ADJUSTERS
HealthCare Comp handles every ancillary service type nationwide. Submit a referral and a coordinator will confirm and begin setup within 24 hours.
