ICD-10-CM > S00-T88 > S50-S59 > S52 > S52.1 > S52.18 > S52.189 > S52.189N S52.189N Other fracture of upper end of unspecified radius, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion Billable/Specific Copy Code Copy Description