Convert to ICD-10-CM: 
820.31 converts approximately to:
- 2015/16 ICD-10-CM S72.143B Displaced intertrochanteric fracture of unspecified femur, initial encounter for open fracture type I or IIOr: 
- 2015/16 ICD-10-CM S72.143C Displaced intertrochanteric fracture of unspecified femur, initial encounter for open fracture type IIIA, IIIB, or IIICOr: 
- 2015/16 ICD-10-CM S72.146B Nondisplaced intertrochanteric fracture of unspecified femur, initial encounter for open fracture type I or IIOr: 
- 2015/16 ICD-10-CM S72.146C Nondisplaced intertrochanteric fracture of unspecified femur, initial encounter for open fracture type IIIA, IIIB, or IIIC