| Source ICD-10 | Mapping Type | Target ICD-9 |
| Recommended Mapping (based on statistical analysis) |
| S52046C (Diagnosis) - Nondisp fx of coronoid pro of unsp ulna, 7thC (Nondisplaced fracture of coronoid process of unspecified ulna, initial encounter for open fracture type IIIA, IIIB, or IIIC) | Single To Single | 81312 (Diagnosis) - Fx coronoid pro ulna-opn (Open fracture of coronoid process of ulna) |
| CMS/CDC General Equivalence Mappings |
| S52046C (Diagnosis) - Nondisp fx of coronoid pro of unsp ulna, 7thC (Nondisplaced fracture of coronoid process of unspecified ulna, initial encounter for open fracture type IIIA, IIIB, or IIIC) | Single To Single | Alternative #1: 81312 (Diagnosis) - Fx coronoid pro ulna-opn (Open fracture of coronoid process of ulna) |