| Source ICD-10 | Mapping Type | Target ICD-9 |
| Recommended Mapping (based on statistical analysis) |
| Y29XXXA (Diagnosis) - Contact with blunt object, undetermined intent, init encntr (Contact with blunt object, undetermined intent, initial encounter) | Single To Single | E9888 (Diagnosis) - Undetermin circumst NEC (Injury by other specified means, undetermined whether accidentally or purposely inflicted) |
| CMS/CDC General Equivalence Mappings |
| Y29XXXA (Diagnosis) - Contact with blunt object, undetermined intent, init encntr (Contact with blunt object, undetermined intent, initial encounter) | Single To Single | Alternative #1: E9888 (Diagnosis) - Undetermin circumst NEC (Injury by other specified means, undetermined whether accidentally or purposely inflicted) |