If you are a Federal employee and you were enrolled in a health plan under the FEHB Program at the time of the injury, your enrollment will continue while you are receiving compensation. If you were not enrolled in the FEHB Program, you may enroll after the date of your injury only if you return to work first. You may not enroll in the FEHB Program while you are in receipt of compensation unless you were covered as a family member under your spouse's plan in the FEHB Program at the time of injury.
You can find more information in the FEHB Handbook.