Nondisp lateral mass fx 1st cervcal vert, 7thG

This code signifies a fracture of the lateral mass of the first cervical vertebra (atlas) that is not displaced. It indicates that the patient is in a subsequent phase of care for this fracture, and healing is progressing slower than expected.

Apply this code for follow-up encounters where a previously diagnosed nondisplaced lateral mass fracture of C1 is being monitored, and the physician documents delayed healing. Documentation should explicitly state "delayed healing" or similar terminology for this specific fracture site.

• Ensure documentation specifies "nondisplaced" and "lateral mass" of C1.
• Confirm the encounter is for follow-up care, not initial treatment.
• Verify physician documentation explicitly states "delayed healing" to differentiate from routine healing or nonunion.