X12 999 Acknowledgment Reader
Read X12 999 implementation acknowledgments without uploading them.
Open the tool → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- 837 set 0002
- Rejected; IK5 R, NM1 at position 12 loop 2010BA code 8, element 9 code 7
- 837 set 0001
- Accepted; IK5 A
Result: 1 rejected, 0 accepted with errors and 1 accepted transaction sets.
Answer the questions this way to reach that result. Your own answers give your own.
Inputs and output
- What you enter
One or more X12 999 005010X231A1 text files, up to 50 MB each. Files remain in the browser tab.
- What you get
- Rejected, accepted-with-errors and accepted counts; a rejected-first table with the group and set control numbers, raw IK5 and AK9 codes, and segment and element error positions; a check of AK9's counts against the sets listed; and a CSV download.
What this is
For each claim batch or other transaction set you sent, it shows whether it was accepted, accepted with errors, or rejected, and where each error is.
When to use it
Use this when a clearinghouse or payer returns a 999 after you submit an 837 or another X12 file, to find which transaction sets were turned away before anyone looked at the claims.
How this is calculated
Citation
ASC X12 005010X231A1 Implementation Acknowledgment (999), as referenced by the CMS Medicare FFS companion guides: AK2/IK3/IK4/IK5 per transaction set and AK9 per functional group. This reader preserves raw codes and positions and does not reproduce X12 code descriptions. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.