Disorder of ligament, vertebrae

This code signifies a non-traumatic pathological condition affecting the ligaments supporting the vertebral column. It encompasses various degenerative, inflammatory, or other acquired disorders of these connective tissues, excluding acute injuries like sprains or tears. This can lead to spinal instability, pain, and restricted movement.

Apply this code when documentation specifies a disorder of a vertebral ligament, such as ligamentous hypertrophy, calcification, or laxity, that is not due to an acute injury. This is appropriate for conditions like ossification of the posterior longitudinal ligament (OPLL) or ligamentum flavum hypertrophy when the specific ligament is not otherwise specified. Documentation should clearly indicate a "disorder" or "pathology" of the ligament rather than an acute sprain or strain.

• Do not use for acute ligamentous sprains or strains; these have specific S codes.
• If the specific ligament affected is known (e.g., ligamentum flavum, posterior longitudinal ligament), look for more specific codes within the M48.0- or M48.8- categories if available.
• Always review documentation to ensure the condition is a "disorder" and not an acute injury or a symptom of another primary spinal condition.