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Tips to prevent claim adjustment reason code (CARC) CO 236

December 23, 2025
This procedure or procedure/modifier combination is not compatible with another procedure or procedure /modifier combination provided on the same day according to the National Correct Coding Initiative.

Tips to prevent RTP 32400 to 32404

December 23, 2025
Prior to submitting your claim, verify the revenue code(s) and/or HCPCS or CPT code combination is correct, complete, and/or valid (as applicable). The following reason codes are frequently associated with this edit:

Top claim denials / rejects

December 23, 2025
Use the left menu find tips to avoid common denials and claims rejections. Billing Medicare correctly the first time increases your cash flow while reducing provider burden. 

Fast facts: Skilled nursing facility (SNF) helpful hints

December 23, 2025
Read this article for helpful hints for SNF claim reviews by CERT.

New provider roadmap

December 23, 2025
View this new provider roadmap for guidance through the Medicare process.

Tips to prevent reject reason code 31997

December 23, 2025
Read this article for tips on how to prevent reject reason code 31997.

Tips to prevent claim adjustment reason code (CARC) CO 97

December 23, 2025
There are a few scenarios that exist for denial reason code CO 97, as outlined below. Please review the associated remittance advice remark code (RARC) noted on the remittance advice for your claim and then refer to the specific resources a…

Using web tools to handle top denied claims in your practice

December 23, 2025
First Coast offers several online tools for you to diagnose why your Medicare claims were denied and resources to help you prevent future claims from such a fate. When a claim gets denied, with First Coast’s web tools you can solve many iss…

Returned to provider (RTP)

January 14, 2026
A claim on status T (RTP) was returned to provider for corrections. The assigned reason code will provide you instructions for the necessary corrections.

Avoiding hospice claim rejects

January 27, 2026
Providers billing Medicare should determine if a patient is enrolled in hospice before billing Medicare Part A. This article has tips on checking patient eligibility and avoiding hospice claim rejects.
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