| Recommended Mapping (based on statistical analysis) |
| Source ICD-9 | Mapping Type | Target ICD-10 |
| 9851 (Diagnosis) - Toxic effect arsenic (Toxic effect of arsenic and its compounds) with E9808 (Diagnosis) - Undeter pois-arsenic (Poisoning by arsenic and its compounds, undetermined whether accidentally or purposely inflicted) | Cluster To Single | T570X4A (Diagnosis) - Toxic effect of arsenic and its compounds, undet, init (Toxic effect of arsenic and its compounds, undetermined, initial encounter) |
| CMS/CDC General Equivalence Mappings |
| 9851 (Diagnosis) - Toxic effect arsenic (Toxic effect of arsenic and its compounds) with E9808 (Diagnosis) - Undeter pois-arsenic (Poisoning by arsenic and its compounds, undetermined whether accidentally or purposely inflicted) | Cluster To Single | Alternative #1: T570X4A (Diagnosis) - Toxic effect of arsenic and its compounds, undet, init (Toxic effect of arsenic and its compounds, undetermined, initial encounter) |