Oth fx right patella, subs for opn fx type 3A/B/C w malunion

This code describes a situation where a patient has a malunion of a previously open fracture of the right patella, specifically one that was initially classified as a severe open fracture (Type IIIA, IIIB, or IIIC). Malunion indicates that the bone has healed, but in an unsatisfactory position or alignment, leading to functional impairment or deformity.

Use this code for follow-up encounters where a patient is being treated for complications arising from a malunited, previously open, severe fracture of the right kneecap. This would apply when the malunion itself is the focus of the current treatment, such as for corrective surgery planning or ongoing management of symptoms related to the malunion.

• Ensure documentation clearly specifies "malunion" and the "right patella."
• Verify the original fracture was an "open fracture type IIIA, IIIB, or IIIC" as this is a specific inclusion criterion.
• This code is for a "subsequent encounter," meaning the initial treatment for the acute fracture has concluded.