Pinworm infection is caused by a small, thin, white roundworm called Enterobius vermicularis. Although pinworm infection can affect all people, it most commonly occurs among children, institutionalized persons, and household members of persons with pinworm infection. Pinworm infection is treatable with over-the-counter or prescription medication, but reinfection, which occurs easily, should be prevented.

Pinworms (Enterobiasis) ICD-9 127.4; ICD-10 B80

Pinworm Infection Frequently Asked Questions


  • Pinworm Infection 
    Centers for Disease Control and Prevention, Division of Parasitic Diseases
    Fact Sheet; Professional Information - DPDx-Lab Assistance