Monteggia's fracture of unspecified ulna, initial encounter for open fracture type IIIA, IIIB, or IIIC
monteggia's fracture of unspecified ulna, initial encounter for open fracture type iiia, iiib, or iiic
Monteggia's fx unsp ulna, init for opn fx type 3A/B/C
monteggia's fx unsp ulna, init for opn fx type 3a/b/c