Remark Code M16 on Your EOB — Meaning & What to Do
Remittance Advice Remark Code (RARC)
What remark code M16 means: Refer to the payer's bulletin or notice for more details.
What to do about remark code M16: Ask the insurer for the specific policy referenced.
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 M16.
Seeing remark code M16 on your EOB?
A denial code tells you what the payer reported, but it may not tell the whole story. Reviewing your EOB and bill together can help clarify what may need attention.
Related codes
RARC N657This should have been billed with a more specific code.
RARC M25The information doesn't support the need for this service.
RARC N640This charge exceeds the covered amount for the service.
RARC M38This service requires prior authorization that wasn't obtained.
Keep reviewing your bill
- Medical Bill vs EOB: What Is the Difference?
- How to Dispute a Medical Bill — Find Billing Errors Before You Pay
- What Is an Itemized Medical Bill? How to Request One
Frequently asked questions about Remark code M16
What does remark code M16 mean on my EOB?
Refer to the payer's bulletin or notice for more details.
What should I do about remark code M16?
Ask the insurer for the specific policy referenced.
Seeing this code on your own EOB?
Upload the EOB, the bill, or both — MD Bill Check reads the codes on your documents, compares them side by side, and flags what's worth questioning. Free, no account needed.