Convert to ICD-10-CM: 
815.11 converts approximately to:
- 2015/16 ICD-10-CM S62.233B Other displaced fracture of base of first metacarpal bone, unspecified hand, initial encounter for open fractureOr: 
- 2015/16 ICD-10-CM S62.236B Other nondisplaced fracture of base of first metacarpal bone, unspecified hand, initial encounter for open fracture