Oth fx left patella, subs for opn fx type I/2 w malunion

This code signifies a left patella fracture, not otherwise specified as transverse, stellate, or longitudinal, that occurred in the past and is now presenting with malunion. The initial fracture was an open fracture, specifically classified as Type I or II according to the Gustilo-Anderson classification.

This code is appropriate for documenting follow-up care for a patient who previously sustained an open Type I or II fracture of the left patella and is currently experiencing complications related to improper healing, such as angulation or rotational deformity. It should be used when the patient is seen for management of this malunion.

• Ensure documentation clearly specifies "malunion" as the complication of the prior fracture.
• Verify the initial fracture was an open Type I or II, as this is a specific requirement for the code.
• Distinguish from nonunion (M84.4x-) or delayed union (M84.2x-) which have separate codes.