Unsp fx lower end of left ulna, init for opn fx type I/2

This code signifies an unspecified fracture of the distal (lower) end of the left ulna. It indicates that the fracture is an open fracture, classified as either Type I or Type II, and that the patient is in the initial phase of treatment for this injury.

Use this code for a patient presenting with a newly diagnosed open fracture of the lower left ulna where the specific fracture type (e.g., Colles, Smith) is not documented, but the Gustilo-Anderson classification is confirmed as Type I or II. This applies to the initial encounter for treatment, such as emergency department visits, initial surgical repair, or initial casting.

• Ensure documentation specifies "left" ulna and "lower end" or "distal" ulna.
• Confirm the fracture is explicitly documented as "open" and classified as Type I or II.
• This "B" seventh character is only for the initial encounter; subsequent encounters will use different characters.