M115 remark code

Remittance advice remark code M115. Remark codes add detail to the reason code on the same claim line.

Item needs a contract supplier

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 M115 means

The DMEPOS item was denied because the supplier is not a contract supplier for this program and area.

Under Medicare competitive bidding and similar demonstration programs, certain items in certain areas must come from contracted suppliers. This remark says the item was furnished by a supplier without that contract.

Liability depends on whether the patient was properly informed in advance. Check the group code and any advance notice before deciding who owes the balance.

Common causes

• The supplier does not hold a contract for this product category in the patient's area.
• The patient's residence placed the claim under a program area the supplier did not expect.
• A grandfathering or other exception applied but was not shown on the claim.

What to do next

1. Confirm the patient's address and whether the item is covered by the program there.
2. Check whether an exception, such as grandfathering, applies and correct the claim if so.
3. Review any advance notice signed by the patient.
4. Help the patient find a contract supplier for future items.

Related codes

• M114 (remark code) Priced under a competitive bidding program
• MA37 (remark code) Missing or invalid patient address