Displ oblique fx shaft of l ulna, 7thM

This code describes a specific type of fracture involving the shaft of the left ulna, where the break is at an angle (oblique) and the bone fragments are not in their normal alignment (displaced). It also indicates that this is not the initial injury, but rather a follow-up encounter for an open fracture (meaning the skin was broken) that is failing to heal properly (nonunion).

Use this code for subsequent encounters when a patient with a previously diagnosed displaced oblique fracture of the left ulnar shaft, which was initially an open fracture (Type I or II), is presenting for ongoing care due to nonunion. This applies when the fracture has not healed within the expected timeframe and further intervention or management is required.

• Ensure documentation clearly specifies "nonunion" and the "subsequent encounter" status for an open fracture.
• Verify the laterality is "left" and the fracture type is "oblique" and "displaced" in the ulnar shaft.
• Confirm the original injury was an "open fracture type I or II" as this impacts the seventh character.