Displ post arch fx 1st cervcal vert, 7thG

This code signifies a fracture of the posterior arch of the atlas (C1 vertebra) that has shifted from its normal anatomical position. The "subsequent encounter" indicates that the patient is receiving routine care during the healing phase of the fracture, and "delayed healing" specifies that the bone is not mending at the expected rate.

Apply this code for follow-up visits where a patient is being managed for a previously diagnosed displaced posterior arch fracture of C1, and the physician's documentation explicitly states that healing is delayed. This includes evaluations, cast changes, or medication adjustments related to the ongoing, slow healing process.

• Ensure documentation clearly specifies "displaced" and "posterior arch" of C1, along with "delayed healing."
• Do not use for initial encounters or for fractures healing normally.
• Sequence this code as the primary diagnosis when the delayed healing of the fracture is the focus of the encounter.