| Recommended Mapping (based on statistical analysis) |
| Source ICD-9 | Mapping Type | Target ICD-10 |
| 17329 (Diagnosis) - Neo skin ear/ex canl NEC (Other specified malignant neoplasm of skin of ear and external auditory canal) | Single To Single | C44291 (Diagnosis) - Oth malig neoplasm skin/ unsp ear and external auric canal (Other specified malignant neoplasm of skin of unspecified ear and external auricular canal) |
| CMS/CDC General Equivalence Mappings |
| 17329 (Diagnosis) - Neo skin ear/ex canl NEC (Other specified malignant neoplasm of skin of ear and external auditory canal) | Single To Single | Alternative #1: C44291 (Diagnosis) - Oth malig neoplasm skin/ unsp ear and external auric canal (Other specified malignant neoplasm of skin of unspecified ear and external auricular canal) |
Single To Single | Alternative #2: C44292 (Diagnosis) - Oth malig neoplasm skin/ right ear and external auric canal (Other specified malignant neoplasm of skin of right ear and external auricular canal) | Single To Single | Alternative #3: C44299 (Diagnosis) - Oth malig neoplasm skin/ left ear and external auric canal (Other specified malignant neoplasm of skin of left ear and external auricular canal) |