You should indicate your current class of admission in item 6 of Part 1 “Information About You” of Form I-131. Class of admission is a special code that usually consists of two or three digits, namely of one or two letters and one number (for example, F1, B2, TN, H-1B, CR1, IR2, RE8). This code refers to the condition or law that grants you entry to the USA. It represents your immigrant visa category under which you were admitted to the USA as a permanent resident or as a conditional permanent resident.
You can find your class of admission code indicated in the following documents:
– permanent resident card, or green card;
– immigrant visa (if you initially entered the USA with the visa);
– I-485 approval notice (if you adjusted status to permanent resident while already in the USA).
Please note that in case you were admitted to the USA as a conditional resident, your class of admission code gets updated once you remove conditions on residence. Adjustment of status applicants should not confuse their initial nonimmigrant status with the immigrant category under which they became permanent residents.
Just in case you are still not sure how to determine your class of admission, these codes are also available online:
– USCIS official website. USCIS provides Appendix 23-7 “Class of Admission under the Immigrant Laws, Code” that lists by law and alphanumeric code all valid class of admission codes for both new arrivals and individuals adjusting status (https://www.uscis.gov/ilink/docView/AFM/HTML/AFM/0-0-0-1/0-0-0-27276/0-0-0-32908.html).
– Department of Homeland Security official website. DHS provides two comprehensive lists “Immigrant Classes of Admission” (https://www.dhs.gov/immigration-statistics/lawful-permanent-residents/ImmigrantCOA) and “Nonimmigrant Classes of Admission” (https://www.dhs.gov/immigration-statistics/nonimmigrant/NonimmigrantCOA). Here you can find types of classes that apply to individual situations.