Table 2. Most Prevalent Procedures by OSS.
| OSS Category, Procedure Typea | Patients, No. (%)b |
|---|---|
| Category 1, Very Low Stress | |
| Allc | 44 545 (10.3) |
| 5 Most common procedure types | |
| All | 24 252 (54.4) |
| Cystourethroscopy, with fulguration: minor, small, or mediumd | 15 641 (35.1) |
| Hydrocele | 3212 (7.2) |
| Ganglion cyst excision, wrist | 2189 (4.9) |
| Fasciectomy, palmar | 1534 (3.4) |
| Arthroplasty, hand | 1676 (3.8) |
| Category 2, Low Stress | |
| Alle | 226 754 (52.4) |
| 5 Most common procedure types | |
| All | 140 706 (62.1) |
| Inguinal hernia, laparoscopic or open | 44 542 (19.6) |
| Arthroscopy, knee or shoulder | 64 457 (28.4) |
| Umbilical hernia, laparoscopic or open | 13 450 (5.9) |
| Transurethral prostate incision, excision, or ablation | 12 963 (5.7) |
| Appendectomy, unruptured, laparoscopic or open | 5294 (2.3) |
| Category 3, Moderate Stress | |
| Allf | 129 846 (30.0) |
| 5 Most common procedure types | |
| All | 64 450 (49.8) |
| Cholecystectomy, laparoscopic or open with or without intraoperative cholangiogram | 21 720 (16.7) |
| Arthroplasty, knee, shoulder, or hip | 21 153 (16.3) |
| Amputation, above or below knee | 9069 (7.0) |
| Thromboendarterectomy, carotid, vertebral, or subclavian | 8730 (6.7) |
| Colectomy, laparoscopic | 3971 (3.1) |
| Category 4, High Stress | |
| Allg | 28 751 (6.6) |
| 5 Most common procedure types | |
| All | 23 655 (82.3) |
| Colectomy, open | 11 398 (39.6) |
| Prostatectomy | 4180 (14.5) |
| Lung resection, lobe or segment | 4797 (16.7) |
| Nephrectomy | 2277 (7.9) |
| Aortobifemoral bypass graft | 1003 (3.5) |
| Category 5, Very High Stress | |
| Allh | 2932 (0.7) |
| 5 Most common procedure types | |
| All | 2782 (94.9) |
| Abdominal aortic aneurysm | 1115 (38.0) |
| Pancreaticoduodenectomy | 560 (19.1) |
| Esophagectomy | 685 (23.4) |
| Liver transplant | 264 (9.0) |
| Pneumonectomy | 158 (5.4) |
Abbreviations: CPT, Current Procedural Terminology; OSS, Operative Stress Score.
Procedure types are composed of 1 or more similar CPT codes.
The denominator for percentages of all in each category is the total number of patients (432 828) and for the types is the total number in each category.
Category 1 (n = 88): cystourethroscopy: 52224, 52234, and 52235; hydrocele: 55040, 55041, and 55060; ganglion cyst excision: 25111, 25112; palmar fasciectomy: 26121, 26123; and hand arthroplasty: 25445, 25447, 26530, and 26531.
Minor is defined as tumor measuring less than 0.5 cm; small, tumor measuring from 0.5 to 2.0 cm; and medium, tumor measuring from 2.0 to 5.0 cm.
Category 2 (n = 240): inguinal hernia: 49505, 49507, 49520, 49521, 49525, 49650, and 49651; arthroscopy, knee or shoulder: 27438, 27446, 27447, 27702, 29806, 29807, 29822, 29823, 29824, 29825, 29826, 29827, 29828, 29870, 29871, 29873, 29874, 29875, 29876, 29877, 29879, 29880, 29881, 29882, 29883, 29884, 29891, and 29999; umbilical hernia: 49585, 49652, 49653; transurethral prostate: 52450, 52601, 52630, 52648, 52649, and 55873; and appendectomy: 44950, 44970.
Category 3 (n = 179): cholecystectomy: 47562, 47563, 47564, 47600, 47605, and 47610; arthroplasty, knee, shoulder, or hip: 23470, 23472, 27125, 27130, 27132, 27134, 27137, 27138, 27486, and 27487; amputation, above or below knee: 27590, 27592, 27594, 27596, 27598, 27880, 27881, 27882, and 27886; thromboendarterectomy: 35301; and laparoscopic colectomy: 44204, 44205, 44206, and 44207.
Category 4 (n = 47): open colectomy: 44140, 44141, 44143, 44144, 44145, 44146, 44150, 44155, 44160, 45110, 45111, and 45395; prostatectomy: 55810, 55842, and 55845; lung resection, lobe or segment: 32480, 32482, 32484, 32505, 32663; nephrectomy: 50230, 50234, and 50240; and aortobifemoral bypass graft: 35540, 35646.
Category 5 (n = 11): abdominal aortic aneurysm: 35081, 35091, and 35102; pancreaticoduodenectomy: 48150, 48153; esophagectomy: 43107, 43112, and 43117; liver transplant: 47135; and pneumonectomy: 32440.