S52.263C Displaced segmental fracture of shaft of ulna, unspecified arm, initial encounter for open fracture type IIIA, IIIB, or IIIC

S52.263C is a billable/specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Displaced segmental fracture of shaft of ulna, unspecified arm, initial encounter for open fracture type IIIA, IIIB, or IIIC.