M99.21
ICD-10-CMThis code signifies a narrowing of the spinal canal in the neck region caused by a partial dislocation or misalignment of the vertebrae. This narrowing can compress the spinal cord or nerve roots, leading to neurological symptoms.
Apply this code when documentation clearly indicates cervical spinal canal stenosis resulting from vertebral subluxation. This is typically supported by imaging reports (e.g., MRI, CT) showing both the subluxation and the resulting canal narrowing, alongside clinical notes describing associated neurological deficits.
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