Oth nondisplaced dens fracture, subs for fx w delay heal

This code signifies a fracture of the odontoid process (dens) of the C2 vertebra that is not displaced, and the patient is in a subsequent phase of care where the fracture is healing slower than expected. It indicates ongoing management of a previously diagnosed dens fracture exhibiting delayed union.

This code is appropriate for follow-up encounters where a patient with a known, nondisplaced dens fracture is being treated for delayed healing. Documentation should clearly state "delayed healing" or "delayed union" of the dens fracture, along with the nondisplaced nature of the fracture. This code is used after the initial active treatment phase.

• Requires documentation of "delayed healing" or "delayed union" for the specified fracture.
• Distinguish from nonunion (S12.121K) or routine healing (S12.121D) of a dens fracture.
• Always sequence this code after any acute injury codes if the patient is still being treated for other related injuries.