Federal IDR outcomes: Neurology in Arizona
In 2025 Q1–Q4, the provider or facility offer prevailed in 82.0% of 377 determined Federal IDR dispute line items for neurology in Arizona. The median prevailing offer was 44.63x the QPA (25th–75th percentile 5.84x–106.08x; n = 374). The median time to a decision was 29 business days (n = 377).
Determined line items
377
2025 Q1–Q4 · 0 split decisions excluded
Provider win rate
82.0%
n = 377 · 2025 Q1–Q4
Median days to decision
29
business days, from dispute initiation · n = 377 · 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 | 377 | 82.0% | 44.63x † | 5.84x–106.08x | 374 | 29 |
| 2024 Q1–Q4 | 828 | 83.3% | 18.14x | 2.04x–63.08x | 824 | 47 |
| 2023 Q1–Q4 | 39 | 66.7% | 1.25x | 1.00x–2.44x | 39 | 27 |
| 2023 Q1–2025 Q4 | 1,244 | 82.4% | 22.47x † | 2.23x–72.01x | 1,237 | 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 |
|---|---|---|---|---|---|
| 95938 Placement of skin electrodes and measurement of stimulated sites on arms and leg | 90 | 85.6% | 137.37x † | 90 | 29.5 |
| 95941 Continuous remote monitoring of nervous system during operation, each hour | 65 | 86.2% | 30.54x † | 65 | 25 |
| 95937 Testing of nerve-muscle junction | 30 | 76.7% | 45.80x † | 30 | 40 |
| 95939 Placement of skin electrodes and measurement of central motor stimulation in arm | 30 | 76.7% | – | 29 | 30 |
2025 Q1–Q4 · rows with n ≥ 30 determined line items · sorted by n.
Related: all specialties in Arizona · Neurology in all states
FAQ
What is the Federal IDR provider win rate for neurology in Arizona?
In 2025 Q1–Q4, the provider or facility offer was selected in 82.0% of 377 determined dispute line items for neurology in Arizona. 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 Withdrawn, settled and ineligible disputes are not in the CMS data.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 neurology in Arizona?
In 2025 Q1–Q4, the median prevailing offer was 44.63x the qualifying payment amount (QPA), with a 25th to 75th percentile range of 5.84x to 106.08x (n = 374 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 neurology in Arizona?
In 2025 Q1–Q4, the median was 29 business days (n = 377 line items), using the CMS field Length of Time to Make Determination (from dispute initiation).