S99.199K
ICD-10-CMOther physeal fracture of unspecified metatarsal, subsequent encounter for fracture with nonunion
This code describes a growth plate fracture in an unspecified metatarsal bone of the foot that has not healed properly. It indicates that the patient is returning for ongoing care of this specific type of fracture, and the bone fragments have failed to unite after a reasonable healing period.
Use this code for follow-up encounters when a patient presents with a previously diagnosed physeal fracture of an unknown metatarsal, and imaging or clinical assessment confirms nonunion. This applies when the original injury occurred, and the fracture site has not shown signs of healing or has failed to bridge the gap between the bone fragments.
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