| Source ICD-10 | Mapping Type | Target ICD-9 |
| Recommended Mapping (based on statistical analysis) |
| Y387X2D (Diagnosis) - Terrorism involving chemical weapons, civilian injured, subs (Terrorism involving chemical weapons, civilian injured, subsequent encounter) | Single To Single | E9797 (Diagnosis) - Terrorism, chemicals (Terrorism involving chemical weapons) |
| CMS/CDC General Equivalence Mappings |
| Y387X2D (Diagnosis) - Terrorism involving chemical weapons, civilian injured, subs (Terrorism involving chemical weapons, civilian injured, subsequent encounter) | Single To Single | Alternative #1: E9797 (Diagnosis) - Terrorism, chemicals (Terrorism involving chemical weapons) |