Remark Code MA18 on Your EOB — Meaning & What to Do
Remittance Advice Remark Code (RARC)
What remark code MA18 means: This claim was also forwarded to your secondary insurer.
What to do about remark code MA18: Wait for the secondary insurer's statement before paying.
Remark codes add detail to a claim decision. They appear alongside the main adjustment codes on your Explanation of Benefits or remittance notice, giving the specific reason behind remark code MA18.
Related codes
RARC MA15Your claim was split for processing.
RARC MA27Your Medicare ID number is missing, incomplete, or invalid.
RARC MA13You may be responsible for a portion under a specific program rule.
RARC MA130The claim has a missing or invalid field and can't be processed as is.
Keep reviewing your bill
- Medical Bill vs EOB: What Is the Difference?
- How to Dispute a Medical Bill — Find Billing Errors Before You Pay
Frequently asked questions about Remark code MA18
What does remark code MA18 mean on my EOB?
This claim was also forwarded to your secondary insurer.
What should I do about remark code MA18?
Wait for the secondary insurer's statement before paying.
Found this code on your bill or EOB?
Upload the document — MD Bill Check decodes every code, checks the math line by line, and explains what's worth questioning.