Health insurance denial & claim adjustment codes

What health insurance denial code 275 means on your EOB

The secondary plan declined to pick up what the primary left you. Worth checking against your secondary plan's actual terms.

What usually causes it

• The secondary plan does not cover the primary's patient responsibility.
• The secondary applied its own deductible first.
• The claim reached the secondary without the primary's EOB.

The documents that decide it

• Both EOBs.
• Your secondary plan's coordination provisions.
• Confirmation the primary's EOB was transmitted.

What to do next

Check whether the secondary actually received the primary's EOB. Missing coordination documents cause more of these than real exclusions do.

This page explains what a code means. It is information, not advice — it does not tell you whether your specific claim should have been paid, and it is not legal, medical, or insurance advice. Your plan documents and your denial notice govern your situation.