Case Tracking
How to Track Your USCIS Case Status: A Receipt Number Guide
What your receipt number means, how to read your case status and what each stage represents.
Published
July 8, 2026
Reading time
5 min read
Category
Case Tracking
What is a receipt number?
Every application you file with USCIS gets a 13-character receipt number (e.g. IOE1234567890). This number is the key to tracking your case.
The first three letters
- IOE — electronic/online filings
- MSC — National Benefits Center
- LIN, SRC, WAC, EAC — different service centers
The stages
Statuses usually follow this flow: case received, biometrics, review and decision. Each stage has its own average processing time.
Why is it hard to understand?
USCIS updates are often in technical English, and the same code can mean different things for different form types.
Tracking with immigo
When you enter your receipt number, immigo explains which stage your case is in, in your own language, and reminds you of key dates. The app talks to USCIS on your behalf.
You are not alone in this.
Download the AppAsk immigo in your own language, track your case, upload documents and never miss an important date.
Note: This article is general information, not legal advice. For decisions about your own situation, rely on official sources (uscis.gov) or a licensed immigration attorney.