Federal IDR outcomes: Anesthesiology in Massachusetts
In 2025 Q1–Q4, the provider or facility offer prevailed in 79.2% of 346 determined Federal IDR dispute line items for anesthesiology in Massachusetts. The median prevailing offer was 2.86x the QPA (25th–75th percentile 1.85x–3.62x; n = 346). The median time to a decision was 52 business days (n = 346).
Determined line items
346
2025 Q1–Q4 · 0 split decisions excluded
Provider win rate
79.2%
n = 346 · 2025 Q1–Q4
Median payment vs QPA
2.86x
middle half 1.85x–3.62x · n = 346 · 2025 Q1–Q4
Median days to decision
52
business days, from dispute initiation · n = 346 · 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 | 346 | 79.2% | 2.86x | 1.85x–3.62x | 346 | 52 |
| 2024 Q1–Q4 | Fewer than 30 determined line items; not shown. | |||||
| 2023 Q1–Q4 | Fewer than 30 determined line items; not shown. | |||||
| 2023 Q1–2025 Q4 | 372 | 77.2% | 2.81x | 1.38x–3.56x | 370 | 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 | 143 | 99.3% | 3.01x | 143 | 52 |
| 01400 Anesthesia for other procedure or exam of knee joint using an endoscope | 37 | 35.1% | 1.10x | 37 | 67 |
| 00731 Anesthesia for other procedure on esophagus, stomach, or upper small bowel using | 35 | 97.1% | 3.28x | 35 | 57 |
2025 Q1–Q4 · rows with n ≥ 30 determined line items · sorted by n.
Related: all specialties in Massachusetts · Anesthesiology in all states
FAQ
What is the Federal IDR provider win rate for anesthesiology in Massachusetts?
In 2025 Q1–Q4, the provider or facility offer was selected in 79.2% of 346 determined dispute line items for anesthesiology in Massachusetts. 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 Withdrawn, settled and ineligible disputes are not in the CMS data.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 Massachusetts?
In 2025 Q1–Q4, the median prevailing offer was 2.86x the qualifying payment amount (QPA), with a 25th to 75th percentile range of 1.85x to 3.62x (n = 346 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 Massachusetts?
In 2025 Q1–Q4, the median was 52 business days (n = 346 line items), using the CMS field Length of Time to Make Determination (from dispute initiation).