| Source ICD-10 | Mapping Type | Target ICD-9 |
| Recommended Mapping (based on statistical analysis) |
| T4791XD (Diagnosis) - Poisoning by unsp agents aff the GI sys, accidental, subs (Poisoning by unspecified agents primarily affecting the gastrointestinal system, accidental (unintentional), subsequent encounter) | Single To Single | V5889 (Diagnosis) - Other specfied aftercare (Other specified aftercare) |
| CMS/CDC General Equivalence Mappings |
| T4791XD (Diagnosis) - Poisoning by unsp agents aff the GI sys, accidental, subs (Poisoning by unspecified agents primarily affecting the gastrointestinal system, accidental (unintentional), subsequent encounter) | Single To Single | Alternative #1: V5889 (Diagnosis) - Other specfied aftercare (Other specified aftercare) |