Federal IDR outcomes: Laboratory and pathology in Louisiana
In 2025 Q1–Q4, the provider or facility offer prevailed in 64.9% of 74 determined Federal IDR dispute line items for laboratory and pathology in Louisiana. The median prevailing offer was 1.00x the QPA (25th–75th percentile 0.22x–1.00x; n = 73). The median time to a decision was 183 business days (n = 74).
Determined line items
74
2025 Q1–Q4 · 0 split decisions excluded
Provider win rate
64.9%
n = 74 · 2025 Q1–Q4
Median payment vs QPA
1.00x
middle half 0.22x–1.00x · n = 73 · 2025 Q1–Q4
Median days to decision
183
business days, from dispute initiation · n = 74 · 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 | 74 | 64.9% | 1.00x | 0.22x–1.00x | 73 | 183 |
| 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 | 78 | 65.4% | 1.00x | 0.22x–1.00x | 77 | 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 |
|---|---|---|---|---|---|
| 0340U DNA assays for detection of minimal residual disease in cancer | 64 | 65.6% | 1.00x | 63 | 183 |
2025 Q1–Q4 · rows with n ≥ 30 determined line items · sorted by n.
Related: all specialties in Louisiana · Laboratory and pathology in all states
FAQ
What is the Federal IDR provider win rate for laboratory and pathology in Louisiana?
In 2025 Q1–Q4, the provider or facility offer was selected in 64.9% of 74 determined dispute line items for laboratory and pathology in Louisiana. 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 Withdrawn, settled and ineligible disputes are not in the CMS data.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 laboratory and pathology in Louisiana?
In 2025 Q1–Q4, the median prevailing offer was 1.00x the qualifying payment amount (QPA), with a 25th to 75th percentile range of 0.22x to 1.00x (n = 73 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 laboratory and pathology in Louisiana?
In 2025 Q1–Q4, the median was 183 business days (n = 74 line items), using the CMS field Length of Time to Make Determination (from dispute initiation).