| Source ICD-10 | Mapping Type | Target ICD-9 |
| Recommended Mapping (based on statistical analysis) |
| S66412A (Diagnosis) - Strain of intrinsic musc/fasc/tend l thm at wrs/hnd lv, init (Strain of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level, initial encounter) | Single To Single | 84209 (Diagnosis) - Sprain of wrist NEC (Other sprains and strains of wrist) |
| CMS/CDC General Equivalence Mappings |
| S66412A (Diagnosis) - Strain of intrinsic musc/fasc/tend l thm at wrs/hnd lv, init (Strain of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level, initial encounter) | Single To Single | Alternative #1: 84209 (Diagnosis) - Sprain of wrist NEC (Other sprains and strains of wrist) |
Single To Single | Alternative #2: 84219 (Diagnosis) - Sprain of hand NEC (Other sprains and strains of hand) |