Claim denial.
Insurance refused to pay.
When your insurer rejects a claim. Common reasons: out-of-network, no preauthorization, not medically necessary, coding error. You can (and should) appeal — first internally to the insurer, then externally to your state insurance department. Most denials are reversed when appealed.
Use this in real life.
The price comparison tool surfaces every term in this glossary in context — plan tiers, deductible status, cash-pay vs. negotiated rate. Pick a procedure to see them all in action.
Browse procedures →