MA30 remark code

Remittance advice remark code MA30. Remark codes add detail to the reason code on the same claim line.

Missing or invalid type of bill

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 MA30 means

The type of bill code on an institutional claim is missing, incomplete or not valid for the facility or claim.

The type of bill tells the payer what kind of facility billed, the kind of care, and whether the claim is an original, a replacement or a void. This remark says that code was missing or could not be used.

It usually comes with reason code 16, and the claim is returned for correction.

Common causes

• The type of bill was blank or had the wrong number of digits.
• The facility type does not match the provider's enrollment.
• The frequency digit did not fit the claim, such as a replacement with no original claim.

What to do next

1. Check the type of bill against the facility type and the kind of care given.
2. Confirm the frequency digit matches whether this is an original or a corrected claim.
3. Send a corrected claim with the right type of bill code.

Related codes

• 16 (reason code) Missing information or billing error
• MA31 (remark code) Missing or invalid billing period dates
• M47 (remark code) Missing or invalid original claim number