Oth incomplete lesion at C1, subs

This code signifies an incomplete spinal cord injury affecting the C1 vertebral level, where some motor or sensory function is preserved below the neurological level of injury. It indicates that the patient is in a subsequent phase of care following the initial treatment of the injury.

Use this code for follow-up encounters, such as rehabilitation sessions, ongoing medical management, or evaluation of recovery progress, for a patient previously diagnosed with an incomplete C1 spinal cord lesion. Documentation should clearly state the C1 level, the incomplete nature of the lesion, and that it is not the initial treatment encounter.

• Ensure documentation specifies "incomplete" lesion; differentiate from complete lesions.
• Verify the encounter is for subsequent care, not the initial injury treatment (which would use an 'A' seventh character).
• Always sequence this code after the primary external cause code, if applicable, and any associated neurological deficits.