| Source ICD-10 | Mapping Type | Target ICD-9 |
| Recommended Mapping (based on statistical analysis) |
| T423X1A (Diagnosis) - Poisoning by barbiturates, accidental (unintentional), init (Poisoning by barbiturates, accidental (unintentional), initial encounter) | Single To Single | 9670 (Diagnosis) - Poisoning-barbiturates (Poisoning by barbiturates) |
| CMS/CDC General Equivalence Mappings |
| T423X1A (Diagnosis) - Poisoning by barbiturates, accidental (unintentional), init (Poisoning by barbiturates, accidental (unintentional), initial encounter) | Single To Single | Alternative #1: 9670 (Diagnosis) - Poisoning-barbiturates (Poisoning by barbiturates) |
Single To Cluster | Cluster #1: 9670 (Diagnosis) - Poisoning-barbiturates (Poisoning by barbiturates)with E851 (Diagnosis) - Acc poison-barbiturates (Accidental poisoning by barbiturates) |