| Source ICD-10 | Mapping Type | Target ICD-9 |
| Recommended Mapping (based on statistical analysis) |
| S90443A (Diagnosis) - External constriction, unspecified great toe, init encntr (External constriction, unspecified great toe, initial encounter) | Single To Single | 9178 (Diagnosis) - Superf inj foot/toe NEC (Other and unspecified superficial injury of foot and toes, without mention of infection) |
| CMS/CDC General Equivalence Mappings |
| S90443A (Diagnosis) - External constriction, unspecified great toe, init encntr (External constriction, unspecified great toe, initial encounter) | Single To Single | Alternative #1: 9178 (Diagnosis) - Superf inj foot/toe NEC (Other and unspecified superficial injury of foot and toes, without mention of infection) |