Displaced transverse fx shaft of humerus, left arm, sequela

This code indicates a long-term complication or late effect resulting from a previous displaced fracture of the mid-portion of the left humerus. The fracture has healed, but the patient is experiencing ongoing issues directly attributable to the initial injury.

Apply this code when documenting a patient presenting with a sequela (e.g., malunion, nonunion, chronic pain, limited range of motion, deformity) of a previously sustained displaced transverse shaft fracture of the left humerus. This code is used after the initial healing period of the acute fracture has passed.

• Always sequence this sequela code first, followed by a code describing the specific nature of the sequela (e.g., M84.422A for malunion).
• Ensure documentation clearly links the current condition to the prior left humeral shaft fracture.
• Do not use this code for an acute fracture or for follow-up care during the active healing phase.