Oth fx low end unsp tibia, 7thN

This code signifies a nonunion of an open fracture (Type IIIA, IIIB, or IIIC) of the lower end of the tibia, which is an unspecified bone. Nonunion indicates that the bone has failed to heal completely after a previous fracture. This specific code is used for subsequent encounters, meaning the patient is being seen for ongoing management of this unhealed fracture.

This code is appropriate for follow-up visits where a patient is being treated for a previously diagnosed open fracture of the distal tibia that has not healed and is now considered a nonunion. It applies when the original fracture was classified as an open fracture type IIIA, IIIB, or IIIC. Use this code for documentation of ongoing care, such as monitoring, further imaging, or planning for revision surgery.

• Ensure documentation clearly specifies "nonunion" and the original fracture was an open fracture of the distal tibia, type IIIA, IIIB, or IIIC.
• Verify laterality (left, right) is not specified in the documentation, as this code is for an "unspecified" tibia.
• Do not use this code for initial encounters or for malunion; a separate code exists for those scenarios.