| Source ICD-10 | Mapping Type | Target ICD-9 |
| Recommended Mapping (based on statistical analysis) |
| 02BW0ZX (Procedure) - Excision of Thoracic Aorta, Descending, Open Approach, Diagn (Excision of Thoracic Aorta, Descending, Open Approach, Diagnostic) | Single To Single | 3821 (Procedure) - Blood vessel biopsy (Biopsy of blood vessel) |
| CMS/CDC General Equivalence Mappings |
| 02BW0ZX (Procedure) - Excision of Thoracic Aorta, Descending, Open Approach, Diagn (Excision of Thoracic Aorta, Descending, Open Approach, Diagnostic) | Single To Single | Alternative #1: 3821 (Procedure) - Blood vessel biopsy (Biopsy of blood vessel) |