CaseStatusTracker resources
USCIS Event Code Directory
Updated · Editorial review pending
Understand why unknown event codes remain unverified and how the case reader handles them.
No verified code meanings published yet
The event dictionary is awaiting source verification and editorial review. Codes such as IAF, IMAG, FTA0, or FNB will not receive definitive meanings here without a supporting source and applicable context.
What the tool shows today
The reader displays bounded eventCode values exactly as supplied, with Not verified labels, dates where available, and chronological ordering. Unknown means we have not established a reliable meaning; it is not an error or an adverse decision.
Read context before drawing conclusions
A code alone does not prove approval, denial, completed background checks, or a specific internal workflow. Use the timeline to understand your supplied records, then verify important actions through official notices and USCIS tools.
Independent service. Not affiliated with USCIS or the U.S. government.
Read your JSON locally →Related: Reading guides · Event code limitations · Official USCIS resources ↗