Hello @Chuck Balogh,
Welcome to the LastPass community!
You can add an item manually without URL by using the secure note option or just adding the item without the URL but it will not autofill since it does not recognize a source to autofill. You can check more here: https://support.lastpass.com/s/document-item?bundleId=lastpass&topicId=LastPass/add-sites-vault.html&_LANG=enusand https://support.lastpass.com/s/document-item?bundleId=lastpass&topicId=LastPass/add_a_new_note.html&_LANG=enus
Kind Regards,
Alejandra
LastPass Support