Unspecified nondisp fx of first cervical vertebra, sequela

This code signifies the long-term effects or complications arising from a previously healed, nondisplaced fracture of the first cervical vertebra (atlas). It indicates that the original fracture itself is no longer acute, but the patient is experiencing residual issues directly attributable to that past injury.

Apply this code when a patient presents with a current condition or symptom that is a direct consequence of a healed, nondisplaced fracture of the C1 vertebra. Documentation should clearly link the current sequela to the historical fracture, such as chronic pain, nerve impingement, or limited range of motion resulting from the old injury.

• Always sequence the sequela code first, followed by codes for the specific manifestations of the sequela.
• Ensure documentation explicitly states the fracture is "healed" or "old" and that the current condition is a direct result.
• Distinguish from acute fractures (S12.001A-K) or malunion/nonunion (M84.28/M84.38) which have separate codes.