Claim edit: Invalid diagnosis-related group code format

Stedi now rejects 837I institutional claims with a diagnosis-related group (DRG) code that isn't three or four numeric digits.

Diagnosis-related group codes

In institutional claims, a diagnosis-related group (DRG) code groups inpatient hospital stays into categories expected to consume similar resources. DRG 470 covers inpatient hip or knee replacements without complications.

Payers use DRG codes to determine fixed reimbursement rates under DRG-based contracts with providers. Medicare inpatient hospital reimbursement is the most common use case, though Medicaid and some commercial plans use different DRG systems. DRG codes are only required if the provider's payer contract uses DRG reimbursement.

Diagnosis-related group code (DRG)

How the edit works

X12 standards require all valid DRG codes to be three or four numeric digits. If a claim’s DRG code is a different length or contains a non-numeric character, the payer may reject the claim.

This edit catches the issue before the claim reaches the payer. It prevents payer rejections, which take longer to resolve and delay payment for the provider.

Rejection errors

If you submit a claim using Stedi's Claim Submission API endpoints and the claim fails the edit, you'll get back an error response in real time. The response includes details in the errors array:

{
  "errors": [
    {
      "code": "33",
      "description": "Invalid Diagnosis Related Group (DRG) code. When entered, the DRG code must be three or four numerics and a valid code. The submitted code, 47A, is invalid. Correct and resubmit.",
      "followupAction": "Please Correct and Resubmit"
    }
  ]
}

If you submit a claim using SFTP and the claim fails the edit, Stedi will reject the claim with a 277CA claim acknowledgment. The acknowledgment will include a related claim status category code, claim status code, and error message:

STC*A7>256*[DATE]*U*[AMOUNT]********Invalid Diagnosis Related Group (DRG) code. When entered, the DRG code must be three or four numerics and a valid code. The submitted code, 47A, is invalid. Correct and resubmit.~