Federal IDR outcomes: Emergency medicine and emergency departments in Illinois
In 2025 Q1–Q4, the provider or facility offer prevailed in 86.1% of 17,615 determined Federal IDR dispute line items for emergency medicine and emergency departments in Illinois. The median prevailing offer was 3.36x the QPA (25th–75th percentile 2.17x–4.87x; n = 16,055). The median time to a decision was 37 business days (n = 17,615).
Determined line items
17,615
2025 Q1–Q4 · 4 split decisions excluded
Provider win rate
86.1%
n = 17,615 · 2025 Q1–Q4
Median payment vs QPA
3.36x
middle half 2.17x–4.87x · n = 16,055 · 2025 Q1–Q4
Median days to decision
37
business days, from dispute initiation · n = 17,615 · 2025 Q1–Q4
Dollar amounts are not shown for specialty groups: the CMS QPA and Offers file, the only source of dollar figures, has no specialty field. See methodology.
By period
| Period | Line items | Win % | Median ×QPA | 25th–75th | Ratio n | Median days |
|---|---|---|---|---|---|---|
| 2025 Q1–Q4 | 17,615 | 86.1% | 3.36x | 2.17x–4.87x | 16,055 | 37 |
| 2024 Q1–Q4 | 7,865 | 84.9% | 3.54x | 2.35x–4.66x | 7,349 | 115 |
| 2023 Q1–Q4 | 1,470 | 81.3% | 3.42x | 2.48x–4.23x | 1,451 | 99 |
| 2023 Q1–2025 Q4 | 26,950 | 85.5% | 3.45x | 2.19x–4.71x | 24,855 | not pooled |
Line items = determined dispute line items (n). Win rate excludes split decisions and includes default decisions. Ratio n = line items reporting a payment-to-QPA ratio. Days are business days as reported by CMS (2023–2024: from IDR entity assignment; 2025: from initiation) and are never pooled.
Most disputed CPT codes
| CPT code | Line items | Win % | Median ×QPA | Ratio n | Median days |
|---|---|---|---|---|---|
| 99284 Emergency department visit with moderate level of medical decision making | 9,056 | 86.9% | 3.33x | 8,027 | 40 |
| 99285 Emergency department visit with high level of medical decision making | 6,376 | 85.3% | 3.26x | 6,124 | 34 |
| 99283 Emergency department visit with low level of medical decision making | 1,080 | 82.6% | 4.10x | 898 | 32 |
| 99291 Critical care, first 30-74 minutes | 617 | 84.4% | 2.91x | 602 | 36 |
| 93010 Routine electrocardiogram (ECG) using at least 12 leads with interpretation and | 96 | 100.0% | 6.21x | 46 | 43 |
| 99233 Subsequent hospital care with moderate levelof medical decision making, if using | 52 | 98.1% | 5.01x | 52 | 17.5 |
| 99239 Hospital discharge day management, more than 30 minutes | 42 | 97.6% | 5.07x | 42 | 20 |
| 12011 Simple repair of surface wound of face, ears, eyelids, nose, lips, or mouth, 2.5 | 35 | 91.4% | 3.59x | 31 | 31 |
2025 Q1–Q4 · rows with n ≥ 30 determined line items · sorted by n.
Related: all specialties in Illinois · Emergency medicine and emergency departments in all states
FAQ
What is the Federal IDR provider win rate for emergency medicine and emergency departments in Illinois?
In 2025 Q1–Q4, the provider or facility offer was selected in 86.1% of 17,615 determined dispute line items for emergency medicine and emergency departments in Illinois. Split decisions are excluded from the denominator and default decisions are included. Withdrawn, settled and ineligible disputes are not in the CMS data.
How do Federal IDR payments compare with the QPA for emergency medicine and emergency departments in Illinois?
In 2025 Q1–Q4, the median prevailing offer was 3.36x the qualifying payment amount (QPA), with a 25th to 75th percentile range of 2.17x to 4.87x (n = 16,055 line items). This uses the CMS field Prevailing Party Offer as % of QPA, where 1.00x equals the QPA.
How long do Federal IDR decisions take for emergency medicine and emergency departments in Illinois?
In 2025 Q1–Q4, the median was 37 business days (n = 17,615 line items), using the CMS field Length of Time to Make Determination (from dispute initiation).