Corrected Claim Helper
Replacing or voiding a claim that already processed? Tell the helper the claim type and what you’re changing, and it shows the frequency code to use, where the original claim number goes, and — for institutional claims — the claim change reason (condition) code. A new, first-time claim won’t correct anything; it denies as a duplicate. Everything runs in your browser.
Reference OnlyBrowser-onlyNo PHIDo not paste patient names, Medicare IDs, SSNs, full claim files containing PHI, or other protected health information. This tool is intended for de-identified examples and educational / reconciliation support. Everything runs in your browser — nothing you paste is stored, logged, or sent anywhere. This helper only needs the claim type and what changed — no patient identifiers, and nothing leaves your device.
Data statusReference Only
- Status
- Reference Only
- Data year / effective
- NUBC claim change reason (condition) codes; X12 837 claim frequency codes
- Last reviewed
- May 2026
- Last updated
- May 2026
- Primary source
- National Uniform Billing Committee (NUBC) & ASC X12; CMS Medicare Claims Processing Manual (Pub. 100-04)
- Formula notes
- The helper maps your selection to the standard claim frequency code (7 replace / 8 void), where the original claim number is referenced, and — for institutional claims — the matching claim change reason (condition) code. It does not validate a specific claim or guarantee a payer will accept the correction.
- Known exclusions
- Payer-specific process varies — Medicare Part B professional claims usually correct via reopening, not a resubmission code
- NUBC / X12 code wording is proprietary and is paraphrased here
- Not every payer accepts every condition code; state Medicaid and commercial rules differ
- Timely-filing limits and original-reference field locations are payer-specific
Reference guidance only. Verify the exact codes, the field locations, and your payer's correction process against NUBC, the X12 837 implementation guide, and your MAC / payer companion guide before submitting.
Build the correction
Claim change reason / condition codes
Institutional adjustment (Type of Bill xx7) and void (xx8) claims carry a claim change reason code — a condition code in the D0–E0 / D5–D6 range — that tells the payer why the claim is being changed. Professional (CMS-1500 / 837P) claims don’t use these. The helper above names the specific code for your scenario; the complete set, with official wording, is maintained by the NUBC.