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Patient Enrollment & Coverage

Enrolling Patients

BioMarin RareConnections™ provides families of patients on VOXZOGO with personalized Case Management and has Field Reimbursement Managers available to provide reimbursement education to your clinic, product access education, and logistics support.

Patient Coverage & Reimbursement Support

BioMarin RareConnections™ Case Managers help families navigate the insurance process, understand insurance coverage options, identify financial assistance options they may be eligible for, and gain access to treatment.

We’re here to help. For assistance, please call 1-833-VOXZOGO (1-833-869-9646) Monday-Friday, 6AM-5PM PT.

Access to VOXZOGO

96% of commercially insured patients* have secured coverage for VOXZOGO1

Over 70% of prior authorizations* for VOXZOGO receive payer approval on first attempt.1

*VOXZOGO patients included are VOXZOGO patients who have enrolled in BioMarin RareConnections™ and are on commercial therapy, data from January through December 2022.

Co-Pay icon

With the BioMarin Co-pay Assistance Program, 97% of participating commercially insured VOXZOGO patients paid $0 out of pocket (OOP) for their prescription2,

The BioMarin Co-pay Assistance Program can cover up to $18,200 in assistance per calendar year for eligible commercially insured patients. Some restrictions apply.

Co-pay program data from January through December 2022. Out of pocket costs may vary.
Valid only for those patients with commercial prescription insurance coverage for VOXZOGO who meet eligibility criteria. Offer not valid for prescriptions reimbursed, in whole or in part, by any federal, state, or government-funded insurance programs (for example, Medicare, Medicare Advantage, Medigap, Medicaid, VA, DoD, or TRICARE), for cash-paying patients, where product is not covered by patient’s commercial insurance, where patient’s commercial insurance plan reimburses them for entire cost of their prescription drug, or where prohibited by law or by the patient’s health insurance provider. If at any time a patient begins receiving prescription drug coverage under any such federal, state, or government-funded healthcare program, patient will no longer be able to use the VOXZOGO Co-Pay Assistance Program and patient must notify BioMarin RareConnections™ at 1.833.869.9646 to stop participation. Patients may not seek reimbursement for the value of the out-of-pocket expense amount covered by the Program from any third-party payer, whether public or private. Valid only in the United States and Puerto Rico. This program is not health insurance. Offer may not be combined with any other rebate, coupon, or offer. Co-payment assistance under the Program is not transferable. BioMarin Pharmaceutical Inc. reserves the right to rescind, revoke, or amend the program without notice. Patient/caregiver certifies responsibility for complying with applicable limitations, if any, of any commercial insurance and reporting receipt of program rewards, if necessary, to any commercial insurer. This program is subject to termination or modification at any time. The VOXZOGO Co-Pay Assistance Program will cover up to $18,200 in assistance per calendar year for eligible patients. Some restrictions apply.


  1. Data on file. BioMarin Pharmaceutical Inc; 2023.
  2. Data on file. BioMarin Pharmaceutical Inc; 2023.


Warnings and Precautions for Risk of Low Blood Pressure
Transient decreases in blood pressure were observed in clinical studies. Patients with significant cardiac or vascular disease and patients on anti-hypertensive medicinal products were excluded from participation in VOXZOGO clinical trials. To reduce the risk of a decrease in blood pressure and associated symptoms (dizziness, fatigue, and/or nausea), patients should be well hydrated, have adequate food intake, and drink approximately 8-10 ounces of fluid in the hour prior to VOXZOGO administration.

In a 52-week, randomized, double-blind, placebo-controlled trial in 121 subjects with achondroplasia, subjects aged from 5.1 to 14.9 years, (Study 1) eight (13%) of 60 patients treated with VOXZOGO had a total of 11 events of transient decrease in blood pressure, compared to 3 (5%) of 61 patients on placebo, over a 52-week treatment period. The median time to onset from injection was 31 (18 to 120) minutes, with resolution within 31 (5 to 90) minutes in VOXZOGO-treated subjects. Two out of 60 (3%) VOXZOGO-treated patients each had one symptomatic episode of decreased blood pressure with vomiting and/or dizziness compared to 0 of 61 (0%) patients on placebo.

Adverse Reactions:
Adverse reactions that occurred in ≥5% of patients treated with VOXZOGO and at a rate greater than that of placebo in the phase 3 study are injection site reactions (including erythema, swelling, urticaria, pain, bruising, pruritus, hemorrhage, discoloration, and induration), vomiting, arthralgia, decrease in blood pressure, gastroenteritis, diarrhea, dizziness, ear pain, influenza, fatigue, seasonal allergy, and dry skin. VOXZOGO-treated patients had an increase in alkaline phosphatase levels (17%), and was noted as a laboratory abnormality.
Injection site reactions: In Study 1, injection site reactions occurred in 51 (85%) subjects receiving VOXZOGO and 50 (82%) subjects receiving placebo over a 52-week period of treatment. Patients receiving VOXZOGO experienced a total of 6983 events of injection site reactions, while patients receiving placebo experienced a total of 1776 events of injection site reactions, over a 52-week period, representing 120.4 events per patient/year exposure and 29.2 events per patient/year exposure, respectively. Two patients in the VOXZOGO arm discontinued treatment due to adverse events of pain and anxiety with injections.

Pediatric Patients 0 to <5 Years:
The safety of VOXZOGO in pediatric patients 0 to <5 years with achondroplasia was evaluated in a 52-week randomized, double-blind, placebo-controlled study (Study 2). In this study, 64 patients from birth to <5 years of age were randomized to receive either a daily vosoritide dose with similar exposure to that characterized to be safe and effective in children with ACH aged ≥5 years old, or placebo. An additional 11 patients received open-label treatment as part of this study. The most common adverse reactions (>10%) reported in pediatric patients 0 to <5 years were injection site reactions (86%) and rash (28%). The overall safety profile of VOXZOGO in pediatric patients 0 to <5 years was similar to that seen in older pediatric patients.

Administration and Monitoring:
VOXZOGO is administered as a daily subcutaneous injection. Prior to use, instruct caregivers on proper preparation and administration of VOXZOGO, and ensure caregivers have demonstrated the ability to perform a subcutaneous injection.

Monitor and assess patient body weight, growth, and physical development regularly every 3-6 months. Adjust dosage according to the patient’s actual body weight. Permanently discontinue treatment with VOXZOGO upon confirmation of no further growth potential, indicated by closure of epiphyses.

Special Populations:

  • There are no available data on the use of VOXZOGO in pregnant women, or data on the presence of VOXZOGO in human milk, the effects on the breastfed infant, or the effects on milk production.
  • The influence of renal impairment on the pharmacokinetics of VOXZOGO has not been evaluated. No dosage adjustment is needed for patients with eGFR ≥60 mL/min/1.73 m2. VOXZOGO is not recommended for patients with eGFR <60 mL/min/1.73 m2.

You may report side effects to the FDA at 1-800-FDA-1088 or You may also report side effects to BioMarin at 1-866-906-6100.

Please see additional safety information in the full Prescribing Information.

VOXZOGO® (vosoritide) is indicated to increase linear growth in pediatric patients with achondroplasia and open growth plates.

  • This indication is approved under accelerated approval based on an improvement in annualized growth velocity. Continued approval for this indication may be contingent upon verification and description of clinical benefit in confirmatory trial(s).