Estimatedhan CPT coding, and the discrepancy from actual I rates of institutional IONM usage for ACDFs.
| IONM Usage | |||||
| Dates | ACDF Coding | IONM Coding | ACDFs (n) | Coding | IONM Report |
| 2009–2013 | ICD-9 | ICD-9 | 679 | 103 (15.2%) | 231 (34.0%) |
| 2009–2013 | CPT | CPT | 715 | 251 (35.1%) | 257 (35.9%) |
| 2019 | ICD-10 | ICD-10 | 79 | 13 (16.5%) | 52 (65.8%) |
| 2019 | CPT | CPT | 213 | 156 (73.2%) | 156 (73.2%) |
ACDF, anterior cervical discectomy and fusion; CPT, Current Procedural Terminology; ICD, International Classification of Diseases; IONM, intraoperative neurophysiological monitoring.