Health insurance denial & claim adjustment codes

What health insurance denial code 211 means on your EOB

The specific drug product is not on the covered list. A therapeutic alternative or a formulary exception is usually the next move.

What usually causes it

• The NDC is not on the formulary.
• A different manufacturer's version is covered.
• A rebate arrangement excludes this product.

The documents that decide it

• The drug, strength, and NDC.
• Your plan's formulary.
• Your prescriber's rationale if the alternative is unsuitable.

What to do next

Ask the pharmacy which version IS covered. If the covered alternative is clinically unsuitable, a formulary exception is the path.

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.