Retained (old) foreign body following penetrating wound of orbit

**Inclusion terms:** - Retrobulbar foreign body

**Excludes1:** - current penetrating wound of orbit (S05.4-)

**Excludes2:** - retained foreign body of eyelid (H02.81-) - retained intraocular foreign body (H44.6-, H44.7-)

**Use additional code:** - code to identify the type of retained foreign body (Z18.-)