Does pending claim mean my claim was denied?

No. Pending claim means the insurer has not finished the claim decision yet. A claim can later be paid, denied, corrected, or otherwise updated after the pending stage.

Should I pay a bill if the claim still shows as pending?

That depends on the situation, but a pending claim is a sign to compare the provider bill with the insurer status before assuming the balance is final.

What Does Pending Claim Mean on an EOB?

Pending claim usually means the insurer has not finished processing the claim yet. It is a status, not a final payment decision, which is why the provider bill and EOB may not fully line up until the claim moves out of pending status.