S52.026 - Nondisplaced fracture of olecranon process without intraarticular extension of unspecified ulna S52.0 - Fracture of upper end of ulna S52.02 - Fracture of olecranon process without intraarticular extension of ulna S52.026 - Nondisplaced fracture of olecranon process without intraarticular extension of unspecified ulna