Federal IDR outcomes: Anesthesiology in Louisiana
In 2025 Q1–Q4, the provider or facility offer prevailed in 59.4% of 5,894 determined Federal IDR dispute line items for anesthesiology in Louisiana. The median prevailing offer was 8.39x the QPA (25th–75th percentile 1.00x–13.46x; n = 5,623). The median time to a decision was 84 business days (n = 5,894).
Determined line items
5,894
2025 Q1–Q4 · 0 split decisions excluded
Provider win rate
59.4%
n = 5,894 · 2025 Q1–Q4
Median payment vs QPA
8.39x
middle half 1.00x–13.46x · n = 5,623 · 2025 Q1–Q4
Median days to decision
84
business days, from dispute initiation · n = 5,894 · 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 | 5,894 | 59.4% | 8.39x | 1.00x–13.46x | 5,623 | 84 |
| 2024 Q1–Q4 | 1,520 | 77.9% | 9.63x | 2.22x–12.48x | 1,432 | 51.5 |
| 2023 Q1–Q4 | 78 | 80.8% | 4.06x | 1.97x–8.49x | 77 | 32 |
| 2023 Q1–2025 Q4 | 7,492 | 63.4% | 8.86x | 1.00x–13.41x | 7,132 | 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 |
|---|---|---|---|---|---|
| 00170 Anesthesia for other procedure on mouth | 521 | 55.1% | 8.02x | 503 | 79 |
| 01938 Anesthesia for injection, drainage or aspiration procedures on spine or spinal c | 479 | 62.0% | 9.83x | 455 | 83 |
| 64415 Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial ple | 431 | 64.3% | 13.46x | 410 | 96 |
| 01400 Anesthesia for other procedure or exam of knee joint using an endoscope | 385 | 59.5% | 7.31x | 371 | 80 |
| 01810 Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wri | 380 | 57.6% | 11.07x | 362 | 79 |
| 00126 Anesthesia for incision of ear drum | 343 | 58.6% | 9.84x | 329 | 88 |
| 01630 Anesthesia for other procedure on top of arm bone and shoulder joint | 302 | 64.6% | 7.18x | 292 | 81 |
| 01937 Anesthesia for injection, drainage or aspiration procedures on spine or spinal c | 268 | 63.1% | 9.93x | 259 | 86 |
| 01480 Anesthesia for other procedure on lower leg, ankle, and foot bones | 260 | 68.1% | 12.60x | 246 | 76 |
| 00160 Anesthesia for other procedure on nose and sinuses | 229 | 55.9% | 7.95x | 219 | 87 |
| 64447 Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) | 174 | 62.6% | 13.20x | 160 | 86 |
| 01830 Anesthesia for other procedure on forearm, wrist, or hand bones | 154 | 53.9% | 5.65x | 146 | 82 |
| 01940 Anesthesia for nerve destruction procedures on spine or spinal cord of lower bac | 112 | 52.7% | 3.69x | 111 | 70 |
| 00812 Anesthesia for exam of colon using an endoscope | 107 | 71.0% | 3.67x | 107 | 28 |
| 00142 Anesthesia for lens surgery | 73 | 58.9% | 9.39x | 65 | 100 |
| 01710 Anesthesia for other procedures on nerves, muscles, tendons, and tissue of upper | 67 | 50.7% | 1.54x | 66 | 84 |
| 01939 Anesthesia for nerve destruction procedures on spine or spinal cord of neck or u | 60 | 56.7% | 9.25x | 60 | 88 |
| 01160 Anesthesia for closed procedure on pubic bone or pelvic joint | 53 | 52.8% | 6.15x | 52 | 81 |
| 00120 Anesthesia for other procedure on external middle and inner ear | 48 | 56.2% | 7.91x | 48 | 77.5 |
| 64417 Injection of anesthetic agent and/or steroid into upper arm and shoulder nerve ( | 48 | 68.8% | 12.59x | 47 | 121.5 |
2025 Q1–Q4 · rows with n ≥ 30 determined line items · sorted by n.
Related: all specialties in Louisiana · Anesthesiology in all states
FAQ
What is the Federal IDR provider win rate for anesthesiology in Louisiana?
In 2025 Q1–Q4, the provider or facility offer was selected in 59.4% of 5,894 determined dispute line items for anesthesiology 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 anesthesiology in Louisiana?
In 2025 Q1–Q4, the median prevailing offer was 8.39x the qualifying payment amount (QPA), with a 25th to 75th percentile range of 1.00x to 13.46x (n = 5,623 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 Louisiana?
In 2025 Q1–Q4, the median was 84 business days (n = 5,894 line items), using the CMS field Length of Time to Make Determination (from dispute initiation).