| Source ICD-10 | Mapping Type | Target ICD-9 |
| Recommended Mapping (based on statistical analysis) |
| S86919A (Diagnosis) - Strain of unsp musc/tend at lower leg level, unsp leg, init (Strain of unspecified muscle(s) and tendon(s) at lower leg level, unspecified leg, initial encounter) | Single To Single | 8449 (Diagnosis) - Sprain of knee & leg NOS (Sprains and strains of unspecified site of knee and leg) |
| CMS/CDC General Equivalence Mappings |
| S86919A (Diagnosis) - Strain of unsp musc/tend at lower leg level, unsp leg, init (Strain of unspecified muscle(s) and tendon(s) at lower leg level, unspecified leg, initial encounter) | Single To Single | Alternative #1: 8449 (Diagnosis) - Sprain of knee & leg NOS (Sprains and strains of unspecified site of knee and leg) |