M67 remark code

Remittance advice remark code M67. Remark codes add detail to the reason code on the same claim line.

Missing or invalid other procedure code

Unofficial reference. This is our own plain-English explanation, not the official code text. Payer rules differ. Verify with the payer and the official X12 code list. AlphaPrefix is not affiliated with X12, CMS or any payer. Data last updated Nov 11, 2026.

What M67 means

A secondary or other procedure code on an institutional claim is missing, incomplete or not valid.

Institutional claims report a principal procedure and may report other procedures performed. This remark says one of the other procedure codes was blank where expected, invalid, or not effective on the date.

It usually comes with reason code 16 and is fixed with a corrected claim.

Common causes

• An inpatient procedure code was entered with a typo or missing digits.
• The code was not valid for the discharge date.
• Procedure codes from the wrong code set were reported on the claim.

What to do next

1. Check the other procedure codes against the code set in effect for the date.
2. Ask coding to review the abstract if several procedure codes were rejected.
3. Send a corrected claim once coding has confirmed the other procedure codes.

Related codes

• 16 (reason code) Missing information or billing error
• MA66 (remark code) Missing or invalid principal procedure
• M51 (remark code) Missing or invalid procedure code