Oth fx lower end of left ulna, init for opn fx type 3A/B/C

This code signifies a fracture of the lower portion of the left ulna that is not specifically classified as another type, and where the bone has broken through the skin. The open nature of the fracture is severe, indicating significant soft tissue damage, contamination, or extensive periosteal stripping, as defined by Gustilo-Anderson types IIIA, IIIB, or IIIC. This is the initial encounter for treatment of this injury.

Use this code for a patient presenting for the first time with an open fracture of the distal left ulna that does not fit more specific fracture types. This applies when the physician explicitly documents the open nature of the fracture as Gustilo-Anderson type IIIA, IIIB, or IIIC. It is appropriate for the initial surgical repair or management of this severe injury.

• Always verify the laterality (left) and the specific bone (ulna) and location (lower end) from the physician's documentation.
• Ensure the documentation clearly specifies an "open" fracture and the Gustilo-Anderson classification (IIIA, IIIB, or IIIC) for accurate coding.
• Confirm this is the "initial encounter" for treatment; subsequent care would require a different encounter character.