Form I-800 is used to determine a child's eligibility for Convention adoptee classification. Form I-800 is filed by the United States citizen who is the prospective adoptive parent. The filing of Form I-800 is done to finalize the immigration process of a child who has continuously resided in a Convention country. In order to file Form I-800, the petitioner must have an approved and valid Form I-800A, Application for Determination of Suitability to Adopt a Child from a Convention Country. The USCIS requires Form I-800 and supporting evidence to determine the child's eligibility for classification as a Convention adoptee.

Form I-800 should be used when the petitioner prospective parent has an approved Form I-800A, the Central Authority of the child's Convention country has proposed an adoption placement, and the petitioner has accepted the proposal, and the petitioner has not yet adopted nor obtained custody of the child. Form I-800 requires that the petitioner be at least 25 years of age at the time of the filing of the petition.

Form I-800 should not be filed where the approval period or extension of the approval period of Form I-800A has expired. Form I-800 should not be used where the marital status of the petitioner has changed since obtaining Form I-800A approval, or there has been a significant change of circumstances since such approval or extension which requires the petitioner to file Form I-800A, Supplement 3.