Understand a medical bill or insurance explanation of benefits

Help me understand a medical bill and my insurance statement. Bill details: [PASTE LINE ITEMS - dates, codes, descriptions, charges] Explanation of benefits (EOB) from my insurer: [PASTE - billed, allowed, paid, my responsibility, denial codes or notes] What care I actually received: [VISIT, TESTS, PROCEDURES, DATES] My plan basics, if known: [deductible, copay, coinsurance, out-of-pocket max, in- or out-of-network] What confuses or worries me: [DETAILS] Steps: 1. Explain each line in plain language and match bill lines to EOB lines. 2. Define the terms on my documents (allowed amount, adjustment, deductible, coinsurance). 3. Flag things worth questioning: duplicate charges, services I don't recall, dates that don't match, out-of-network charges at an in-network facility, a bill that doesn't match the EOB's "you owe" amount. 4. Do the math using only my numbers and show it. Return: - A line-by-line table: service | billed | insurer paid | I owe | match or question. - A list of questions for the provider's billing office and for my insurer. - Short call scripts, plus what to ask for (itemized bill, payment plan, financial assistance, and how to file an appeal if a claim was denied, with the deadline marked [CONFIRM WITH INSURER]). Don't assume rules that depend on my plan or location - mark them [CONFIRM WITH INSURER]. This is general information, not legal or financial advice.