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Payment Posting & Reconciliation

What is Explanation of Payment (EOP)?

Also known as: EOP

Quick answer

A document, similar to an Explanation of Benefits but addressed to the provider, that summarizes how a payer processed one or more claims, including amounts billed, allowed, paid, and any adjustments applied.

Written & reviewed by the Unlimited Systems Revenue Cycle TeamLast reviewed May 2026

Key takeaways

  • Explanation of Payment is a payment posting & reconciliation concept in healthcare revenue cycle management.
  • A document, similar to an Explanation of Benefits but addressed to the provider, that summarizes how a payer processed one or more claims, including amounts billed, allowed, paid, and any adjustments applied.
  • Surfaces underpayments and contractual variances for review

Where Explanation of Payment fits in the revenue cycle

Explanation of Payment sits within the back end of the revenue cycle, after the payer has paid. It is part of payment posting and reconciliation, accurately recording remittances and balancing them against expected payment.

Explanation of Payment is also referred to as EOP. You'll encounter it on payer communications, billing reports, and in conversations between front-office, coding, and accounts-receivable teams.

Why Explanation of Payment matters for your practice

Payment posting is where underpayments and missed adjustments are caught. Accurate, timely posting keeps the patient ledger correct, surfaces payer underpayments for appeal, and gives leadership trustworthy data on what the practice has actually collected.

  • Records payer and patient payments against the claim
  • Surfaces underpayments and contractual variances for review
  • Keeps the patient balance and A/R accurate
  • Increasingly automated via electronic remittance (ERA/835)

Explanation of Payment in practice

Knowing what Explanation of Payment means is only useful if it changes what your team does. In a modern revenue cycle, that means catching issues related to payment Posting & Reconciliation earlier, documenting and coding them correctly, and using technology to flag exceptions automatically rather than discovering them after a claim is denied.

This is exactly where a specialty-built revenue cycle platform earns its keep: by encoding the rules behind terms like Explanation of Payment directly into the workflow, so clean claims go out the first time and your team works by exception instead of chasing problems after the fact.

Explanation of Payment: frequently asked questions

What is Explanation of Payment?

A document, similar to an Explanation of Benefits but addressed to the provider, that summarizes how a payer processed one or more claims, including amounts billed, allowed, paid, and any adjustments applied.

What does Explanation of Payment mean in medical billing?

In medical billing, Explanation of Payment falls under Payment Posting & Reconciliation. It is part of payment posting and reconciliation, accurately recording remittances and balancing them against expected payment.

Why is Explanation of Payment important in the revenue cycle?

Payment posting is where underpayments and missed adjustments are caught. Accurate, timely posting keeps the patient ledger correct, surfaces payer underpayments for appeal, and gives leadership trustworthy data on what the practice has actually collected.

Is Explanation of Payment known by any other names?

Yes, Explanation of Payment is also referred to as EOP.

Authoritative sources

For the most current rules and requirements, consult the primary sources that govern this area of healthcare billing:

Unlimited Systems Revenue Cycle Team
RCM & medical billing specialists

Unlimited Systems has built specialty revenue cycle technology for healthcare providers for two decades. This glossary is maintained by our in-house team of billing, coding, and reimbursement specialists.

Put Explanation of Payment to work in your practice

See how the Unlimited Systems platform automates clean claims, denial management, eligibility verification, and more across your revenue cycle.

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