Displ commnt fx shaft of ulna, l arm, 7thN

This code describes a severe, multi-fragmented fracture of the shaft of the left ulna, where the bone pieces are not in their normal alignment. It specifically indicates that this is a follow-up encounter for an open fracture (meaning the skin was broken) classified as Type IIIA, IIIB, or IIIC, and the fracture has failed to heal properly (nonunion).

Use this code for a patient presenting for ongoing management of a previously sustained, complex open fracture of the left ulnar shaft that has not united. This applies to situations such as surgical intervention for nonunion, follow-up appointments to monitor nonunion, or treatment of complications related to the nonunion.

• Ensure documentation clearly specifies "left arm" and "shaft of ulna" to differentiate from other forearm fractures.
• Verify the encounter is for a subsequent visit related to the nonunion of an open fracture, not an initial treatment.
• Confirm the original open fracture was documented as Type IIIA, IIIB, or IIIC to support the specificity of this code.