Displ seg fx shaft of ulna, l arm, 7thR

This code describes a specific type of fracture involving the shaft of the left ulna, where the bone is broken into segments and the pieces are no longer aligned. It indicates that the fracture was initially an open fracture (meaning the skin was broken) of a severe type (IIIA, IIIB, or IIIC), and the current encounter is for treatment of malunion, where the bone has healed in an incorrect position.

Use this code for a patient presenting with a malunited segmental fracture of the left ulnar shaft, previously an open fracture of type IIIA, IIIB, or IIIC. This code is appropriate for subsequent encounters where the focus is on managing or treating the malunion, such as for surgical correction or ongoing rehabilitation.

• Verify documentation clearly states "left arm" and "ulna shaft" to ensure anatomical specificity.
• Confirm the original fracture was an open fracture type IIIA, IIIB, or IIIC and that the current issue is malunion.
• Ensure the encounter is "subsequent" and not for the initial treatment of the fracture.