| Source ICD-10 | Mapping Type | Target ICD-9 |
| Recommended Mapping (based on statistical analysis) |
| S82874C (Diagnosis) - Nondisp pilon fx right tibia, init for opn fx type 3A/B/C (Nondisplaced pilon fracture of right tibia, initial encounter for open fracture type IIIA, IIIB, or IIIC) | Single To Single | 8241 (Diagnosis) - Fx medial malleolus-open (Fracture of medial malleolus, open) |
| CMS/CDC General Equivalence Mappings |
| S82874C (Diagnosis) - Nondisp pilon fx right tibia, init for opn fx type 3A/B/C (Nondisplaced pilon fracture of right tibia, initial encounter for open fracture type IIIA, IIIB, or IIIC) | Single To Single | Alternative #1: 8241 (Diagnosis) - Fx medial malleolus-open (Fracture of medial malleolus, open) |