HCFA-1500 Box 22 - Resubmission Code and Original Reference Number

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August 11, 2025

On the HCFA-1500 form, Box 22 is used to report claim resubmission information and/or the original reference number from a previously adjudicated claim. It is generally completed only when sending a replacement or void claim, not for original submissions, unless specifically required by the payer.

Tip: Do not populate Box 22 for an original claim (unless specifically instructed by the payer). Use this box when sending a replacement or void request for a previously adjudicated claim, making sure to provide both the Claim Frequency Type Code and the Payer Claim Control Number.

In our example below, the provider entered 7 as the Claim Frequency Type Code (replacement claim) and 1568735 as the Payer Claim Control Number.

HCFA-1500 Box 22 - Resubmission and Original Reference Number

In the X12 837P 5010 transaction, Box 22 maps to two locations:

  • CLM05-3 (Claim Frequency Type Code) in the 2300 CLM segment
  • REF*F8 (Payer Claim Control Number) in the 2300 Claim Information Loop

Valid values for the Claim Frequency Type Code (CLM05-3) include:

  • 1 – Original Claim
  • 7 – Replacement of Prior Claim
  • 8 – Void/Cancel of Prior Claim

Sample 837P (5010) – Box 22 Mappings

> Claim Information (2300) CLM*123456*500***11:B:7*Y*A*Y*Y~ > Payer Claim Control Number (2300) REF*F8*1568735~

Segment Breakdown:

  • CLM05-3: Claim Frequency Type Code (7 in this example indicates a replacement claim)
  • REF01: Qualifier (F8 = Original Reference Number / Payer Claim Control Number)
  • REF02: Payer Claim Control Number (1568735)

Note: Box 22 should only be used for resubmissions (7) or voids (8) unless otherwise directed by the payer. Incorrect use can delay or deny claims.

For additional information on the X12 837 standard, please refer to the official implementation guides published by X12.

HCFA-1500 Form Box Locations

Grab a sample of the HCFA-1500 claim form here - HCFA 02/12 Claim Form


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