Oth disp fx of base of 1st MC bone, l hand, 7thK

This code describes a specific type of fracture involving the base of the first metacarpal bone in the left hand, which is displaced. The "subsequent encounter" indicates that the patient is receiving follow-up care for a fracture that has not healed properly, specifically experiencing nonunion.

This code is appropriate for patients presenting for ongoing management of a previously diagnosed left first metacarpal base fracture that is displaced and has failed to unite. This includes office visits, hospital encounters, or other services related to the nonunion treatment. It should be used when the nonunion is the primary reason for the encounter.

• Ensure documentation clearly specifies "nonunion" and not delayed union or malunion, as these have different codes.
• Verify laterality (left hand) and the specific bone (first metacarpal base) are accurately documented.
• Confirm the fracture is described as "displaced" to support the specificity of this code.