How to Help Your Patients Save Money on Rabies Immune Globulin: A Provider's Guide to Savings Programs

Rabies post-exposure prophylaxis (PEP) is one of the most expensive emergency medical interventions patients encounter — often costing $2,500 to $7,000 out of pocket for the full course of human rabies immune globulin (HRIG) and four doses of rabies vaccine. High costs have been documented to deter patients from seeking treatment, creating a real and serious risk of treatment delays.

As a provider, you are often in the best position to connect patients with cost-reduction options — many of which patients may not know exist. This guide covers every available pathway for reducing HRIG costs for your patients.

The Real Cost Problem: Why HRIG Is So Expensive

HRIG is derived from the plasma of hyperimmunized human donors — a manufacturing process that requires:

Recruitment and repeated vaccination of a dedicated donor pool

Plasma collection, cold ethanol fractionation, and purification

Multiple viral inactivation steps to ensure safety

Rigorous quality assurance testing for potency and safety

HyperRAB saw price increases of over 370% over a decade. The relatively small annual US market (approximately 50,000-60,000 patients per year) means manufacturers cannot benefit from the economies of scale that make common drugs affordable. KedRAB starts at approximately $736 for a 2 mL vial; at 20 IU/kg, a 70 kg adult requires 9.3 mL of 150 IU/mL product.

Pathway 1: Insurance Authorization — Getting It Right the First Time

Most commercial health insurance plans cover HRIG and the rabies vaccine series when medically necessary. The key is ensuring the documentation supports medical necessity:

Document the type of animal, nature of exposure (bite, scratch, mucous membrane contact), wound location, whether the animal was available for observation or testing, and your clinical risk assessment

Use ICD-10 codes that specify the animal species and the nature of the exposure (e.g., Z20.3 for contact with and suspected exposure to rabies)

ER-administered HRIG is typically billed under the facility's ER benefit, where prior authorization is not required (emergency care). Outpatient PEP may require prior auth — submit proactively and with complete documentation.

Medicare Part B covers HRIG when administered as part of an office visit or outpatient encounter. Medicare Part A covers it when administered during inpatient or observation status.

Pathway 2: Manufacturer Patient Assistance Programs (PAPs)

All three HRIG manufacturers have patient assistance programs for patients who are uninsured, underinsured, or cannot afford their cost-sharing. These programs are typically facility-based (the hospital or clinic contacts the manufacturer on behalf of the patient):

Sanofi (Imogam Rabies-HT, 150 IU/mL): Sanofi has historically provided Imogam at no charge to patients in need, including resupplying it directly to hospitals. Their program has assisted more than 110 patients with immunoglobulin and more than 220 with vaccine in a single reported year. Contact: 1-800-822-2463.

Grifols (HyperRAB, 300 IU/mL): Contact Grifols Therapeutics LLC at 1-800-520-2807. Grifols offers assistance for patients who cannot afford HyperRAB.

Kedrion/Kamada (KedRAB, 150 IU/mL): Contact Kedrion Biopharma Inc. at 1-855-353-7466 to inquire about patient assistance.

Practical tip: Many hospitals have a pharmacy director or social worker who handles PAP applications. Don't wait for the patient to navigate this themselves — initiate the process while the patient is still in your care.

Pathway 3: State and County Public Health Departments

Public health departments play a critical role in rabies PEP access, especially for uninsured patients and those in rural areas:

Many county health departments stock HRIG and can administer PEP at reduced or no cost to uninsured patients

State health departments can authorize emergency public health funds for PEP in some cases

Public health officials can also advise on whether PEP is actually indicated in borderline cases — helping avoid unnecessary treatment costs for low-risk exposures

Encourage patients to call their county health department as one of the first steps, especially if they lack insurance.

Pathway 4: Hospital Charity Care and Financial Counseling

All non-profit hospitals — and most for-profit hospitals — are required to maintain charity care programs or sliding-scale fee arrangements for uninsured or low-income patients. Strategies include:

Refer patients to the hospital's financial counselor or social worker while they are still in your care — don't leave this to follow-up

Emergency Medicaid enrollment may cover a single PEP encounter in some states, even for patients who don't otherwise qualify for Medicaid

Negotiate payment plans before patients are discharged — a pre-discharge financial conversation is far more productive than a post-discharge collections process

The Provider's Ethical Obligation: Cost Cannot Delay PEP

The medical literature has documented cases of patients who delayed or refused PEP due to cost concerns — with fatal outcomes. As their provider, you have an ethical responsibility to:

Initiate PEP immediately, regardless of insurance status or ability to pay.

Simultaneously connect the patient with all available financial assistance channels.

Document all assistance efforts in the medical record.

Rabies is a nearly universally fatal disease once symptoms appear. No financial barrier justifies delaying life-saving treatment.

Using medfinder to Help Patients Find and Access HRIG

Beyond cost, a major patient access barrier is simply finding which facility near them stocks HRIG. medfinder for providers is a service that contacts facilities near your patient and identifies which ones have specific medications available — removing the burden of making multiple phone calls while managing a time-sensitive medical emergency. This can be especially valuable when your patient needs to follow up for remaining PEP vaccine doses at a facility other than where you initiated care.

Also see our companion guide: How to Help Your Patients Find Rabies Immune Globulin in Stock