A Medical Bill, an EOB and a WC Payment Notice Are Different

Identify who issued each paper and what it says happened before comparing amounts. A provider bill, a health-plan explanation of benefits and a workers’ compensation payment document are different records. This guide offers general billing organization; it does not determine whether a charge is payable by you or a WC insurer.

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CMS’s health-insurance EOB guide explains that an EOB is not a bill. It describes plan charges, allowed amounts, payments and remark codes. That health-plan explanation is useful for identifying an EOB, but it is not a statement of Pennsylvania WC coverage or balance-billing rules.

Build a service-level comparison

Use one row for the same provider and service date, keeping separate copies of each document.

Document	What to record	Question it may answer
Provider bill	Issuer, service date, charge and request for payment	What is the provider asking for?
Health-plan EOB	Plan, claim reference, processed amount and explanation	How did this health plan process its claim?
WC correspondence	Payer, exact document title, service or payment period	What WC action does this record describe?
Receipt	Payee, date and amount paid	What payment do you have evidence of making?

A matching dollar amount alone does not establish that two records concern the same service. Compare the service date, provider and reference information before treating a later paper as a correction or duplicate.

Preserve the explanation codes

Keep the back pages and any code key. Do not replace a code with a guessed reason such as “claim denied” or “doctor not approved.” Ask the issuer what the code means for the particular service and whether another record explains the action.

For Pennsylvania WC, 34 Pa. Code §127.211 addresses balance billing connected to compensable injuries. A health-plan “patient balance” field should not be used by itself to decide a WC payment question. The legal context and actual records need examination.

Ask a narrow administrative question

Try: “These documents list the same service date but different payment explanations. Which payer was billed, what action was taken, and is there a corrected statement?” That helps distinguish a routing or coding question from a dispute about responsibility for the injury.

Keep the documents while the issue is unresolved. Do not treat a request for clarification as extending any response instruction or deciding whether you should pay.

For a provider-payment process, see medical fee review. For treatment reasonableness questions, see utilization review. The medical administration topic separates these tasks.