Federal IDR outcomes: Anesthesiology in Mississippi
In 2025 Q1–Q4, the provider or facility offer prevailed in 84.3% of 280 determined Federal IDR dispute line items for anesthesiology in Mississippi. The median prevailing offer was 4.51x the QPA (25th–75th percentile 3.23x–9.44x; n = 277). The median time to a decision was 31 business days (n = 280).
Determined line items
280
2025 Q1–Q4 · 2 split decisions excluded
Provider win rate
84.3%
n = 280 · 2025 Q1–Q4
Median payment vs QPA
4.51x
middle half 3.23x–9.44x · n = 277 · 2025 Q1–Q4
Median days to decision
31
business days, from dispute initiation · n = 280 · 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 | 280 | 84.3% | 4.51x | 3.23x–9.44x | 277 | 31 |
| 2024 Q1–Q4 | 100 | 63.0% | 1.66x | 1.25x–2.22x | 98 | 91 |
| 2023 Q1–Q4 | 31 | 54.8% | 1.25x | 1.00x–1.78x | 31 | 45 |
| 2023 Q1–2025 Q4 | 411 | 76.9% | 3.68x | 1.53x–6.39x | 406 | 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 |
|---|---|---|---|---|---|
| 00812 Anesthesia for exam of colon using an endoscope | 79 | 86.1% | 4.08x | 79 | 33 |
| 00811 Anesthesia for other procedure on large bowel using an endoscope | 35 | 82.9% | 3.54x | 35 | 33 |
2025 Q1–Q4 · rows with n ≥ 30 determined line items · sorted by n.
Related: all specialties in Mississippi · Anesthesiology in all states
FAQ
What is the Federal IDR provider win rate for anesthesiology in Mississippi?
In 2025 Q1–Q4, the provider or facility offer was selected in 84.3% of 280 determined dispute line items for anesthesiology in Mississippi. 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 Withdrawn, settled and ineligible disputes are not in the CMS data.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 anesthesiology in Mississippi?
In 2025 Q1–Q4, the median prevailing offer was 4.51x the qualifying payment amount (QPA), with a 25th to 75th percentile range of 3.23x to 9.44x (n = 277 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 anesthesiology in Mississippi?
In 2025 Q1–Q4, the median was 31 business days (n = 280 line items), using the CMS field Length of Time to Make Determination (from dispute initiation).