| Source ICD-10 | Mapping Type | Target ICD-9 |
| Recommended Mapping (based on statistical analysis) |
| M438X1 (Diagnosis) - Oth deforming dorsopathies, occipito-atlanto-axial region (Other specified deforming dorsopathies, occipito-atlanto-axial region) | Single To Single | 7378 (Diagnosis) - Curvature of spine NEC (Other curvatures of spine) |
| CMS/CDC General Equivalence Mappings |
| M438X1 (Diagnosis) - Oth deforming dorsopathies, occipito-atlanto-axial region (Other specified deforming dorsopathies, occipito-atlanto-axial region) | Single To Single | Alternative #1: 7378 (Diagnosis) - Curvature of spine NEC (Other curvatures of spine) |
Single To Single | Alternative #2: 7379 (Diagnosis) - Curvature of spine NOS (Unspecified curvature of spine) |