| Source ICD-10 | Mapping Type | Target ICD-9 |
| Recommended Mapping (based on statistical analysis) |
| T5391XS (Diagnosis) - Toxic eff of unsp halgn deriv of aromat hydrocrb, acc, sqla (Toxic effect of unspecified halogen derivatives of aliphatic and aromatic hydrocarbons, accidental (unintentional), sequela) | Single To Single | 9091 (Diagnosis) - Late eff nonmed substanc (Late effect of toxic effects of nonmedical substances) |
| CMS/CDC General Equivalence Mappings |
| T5391XS (Diagnosis) - Toxic eff of unsp halgn deriv of aromat hydrocrb, acc, sqla (Toxic effect of unspecified halogen derivatives of aliphatic and aromatic hydrocarbons, accidental (unintentional), sequela) | Single To Single | Alternative #1: 9091 (Diagnosis) - Late eff nonmed substanc (Late effect of toxic effects of nonmedical substances) |