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Medicare Billing: CMS-1450 & 837I

Loop 2300 HI/FLs 18-28

situationally required icon

You must use when a condition code is available to describe a situation on the claim.

Table 33: Loop 2300 HI/FLs 18-28 Fields
Condition CodesSource
Enter codes for conditions or events that may affect bill processing.NUBC

Enter the corresponding condition code in numerical order to describe conditions or events that apply to the billing period. The codes help determine patient eligibility and benefits to administer primary or secondary insurance coverage.

  • 02 – Condition is employment related
  • 20 – Patient requested billing (demand bill)
  • 21 – Billing for denial notice
  • 41 – Partial hospitalization
  • 44 – Inpatient admission changed to outpatient
  • 67 – Patient elects not to use Lifetime Reserve (LTR) days
  • 77 – Provider accepts or is obligated/required, due to a contractual arrangement or law, to accept payment by a primary payer as payment in full
  • D0 – Changes to service dates
  • D1 – Changes to charges

Copyright © 2025, the American Hospital Association, Chicago, Illinois. Reproduced with permission. No portion of the AHA copyrighted materials contained within this publication may be copied without the express written consent of the AHA. AHA copyrighted materials including the UB-04 codes and descriptions may not be removed, copied, or utilized within any software, product, service, solution, or derivative work without the written consent of the AHA.