Federal IDR outcomes: Radiology in Tennessee
In 2025 Q1–Q4, the provider or facility offer prevailed in 93.6% of 2,599 determined Federal IDR dispute line items for radiology in Tennessee. The median prevailing offer was 2.40x the QPA (25th–75th percentile 1.93x–2.87x; n = 2,597). The median time to a decision was 32 business days (n = 2,599).
Determined line items
2,599
2025 Q1–Q4 · 0 split decisions excluded
Provider win rate
93.6%
n = 2,599 · 2025 Q1–Q4
Median payment vs QPA
2.40x
middle half 1.93x–2.87x · n = 2,597 · 2025 Q1–Q4
Median days to decision
32
business days, from dispute initiation · n = 2,599 · 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 | 2,599 | 93.6% | 2.40x | 1.93x–2.87x | 2,597 | 32 |
| 2024 Q1–Q4 | 3,139 | 95.8% | 3.20x | 2.97x–3.21x | 3,120 | 306 |
| 2023 Q1–Q4 | 22,939 | 90.0% | 3.17x | 2.60x–3.21x | 22,694 | 69 |
| 2023 Q1–2025 Q4 | 28,677 | 91.0% | 3.17x | 2.59x–3.21x | 28,411 | 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 |
|---|---|---|---|---|---|
| 74177 CT scan of abdomen and pelvis with contrast | 408 | 94.9% | 2.92x | 408 | 31 |
| 71045 X-ray of chest, 1 view | 281 | 93.6% | 2.03x | 280 | 30 |
| 77067 Screening mammography | 141 | 86.5% | 2.29x | 141 | 39 |
| 77063 Screening 3D breast mammography | 139 | 86.3% | 1.74x | 139 | 39 |
| 74176 CT scan of abdomen and pelvis without contrast | 133 | 94.7% | 3.08x | 133 | 34 |
| 78815 Nuclear medicine study from skull base to mid-thigh with CT scan | 132 | 97.0% | 1.83x | 132 | 25.5 |
| 70450 CT scan head or brain without contrast | 115 | 97.4% | 2.34x | 115 | 30 |
| 71046 X-ray of chest, 2 views | 100 | 96.0% | 2.00x | 100 | 30.5 |
| 71260 CT scan of chest with contrast | 87 | 98.9% | 2.27x | 87 | 29 |
| 71275 CT scan of blood vessels of chest with contrast | 78 | 93.6% | 2.24x | 78 | 29 |
| 74018 X-ray of abdomen, 1 view | 49 | 100.0% | 1.93x | 49 | 36 |
| 71250 CT scan of chest without contrast | 37 | 97.3% | 2.63x | 37 | 41 |
| 70553 MRI scan of brain before and after contrast | 35 | 91.4% | 1.94x | 35 | 30 |
| 70498 CT scan of blood vessels of neck with contrast | 32 | 100.0% | 2.37x | 32 | 37.5 |
| 70491 CT scan of soft tissue of neck with contrast | 31 | 100.0% | 2.22x | 31 | 32 |
| 70496 CT scan of blood vessels of head with contrast | 30 | 100.0% | 2.35x | 30 | 30 |
2025 Q1–Q4 · rows with n ≥ 30 determined line items · sorted by n.
Related: all specialties in Tennessee · Radiology in all states
FAQ
What is the Federal IDR provider win rate for radiology in Tennessee?
In 2025 Q1–Q4, the provider or facility offer was selected in 93.6% of 2,599 determined dispute line items for radiology in Tennessee. 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 radiology in Tennessee?
In 2025 Q1–Q4, the median prevailing offer was 2.40x the qualifying payment amount (QPA), with a 25th to 75th percentile range of 1.93x to 2.87x (n = 2,597 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 radiology in Tennessee?
In 2025 Q1–Q4, the median was 32 business days (n = 2,599 line items), using the CMS field Length of Time to Make Determination (from dispute initiation).