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Medical BillingGenerated accuracy model review: 2026-05-06
EOB Patient Balance Calculator accuracy and testing
This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.
Formula source
- Remaining patient balance = deductible + coinsurance + copay + non-covered amount - prior patient payments - patient adjustments.
Test cases
Default input regression check
Generated from the checked-in default inputs and calculate function.
Inputs
- Deductible Amount: $100
- Coinsurance Amount: $40
- Copay Amount: $20
- Non-Covered Amount: $0
- Prior Patient Payments: $30
- Patient Adjustments: $0
Expected outputs
- Remaining Patient Balance: $130.00
- Total EOB Responsibility: $160.00
- Payments + Adjustments: $30.00
- Status: Balance remains
Known limitations
- This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
- Use the result as a planning estimate unless the calculator page states a stricter purpose.
Assumptions
- All amounts apply to the same encounter or claim.
- The calculator does not determine whether balance billing is allowed.
- Values are processed locally only.
Unit handling
- Deductible Amount accepts values in $.
- Coinsurance Amount accepts values in $.
- Copay Amount accepts values in $.
- Non-Covered Amount accepts values in $.
- Prior Patient Payments accepts values in $.
- Patient Adjustments accepts values in $.
- Remaining Patient Balance is displayed as currency.
- Total EOB Responsibility is displayed as currency.
- Payments + Adjustments is displayed as currency.
Rounding rules
- Number displays use up to 2 decimal places in the calculator UI.
- Currency outputs are displayed with standard US dollar formatting.
- Input precision follows configured step values where provided.
Version history
1.0.0 - 2026-05-06
Generated accuracy and testing page from the current eob-patient-balance-calculator calculator definition.
Change log
2026-05-06
Published default regression test documentation and metadata fallbacks for EOB Patient Balance Calculator.
Calculator transparency
Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.