Other secondary kyphosis, thoracolumbar region

This code signifies an abnormal, excessive posterior curvature of the spine in the thoracolumbar region that is not congenital or postural in origin. It represents a secondary kyphotic deformity affecting the junction between the thoracic and lumbar vertebrae. This condition can lead to pain, functional limitations, and altered spinal biomechanics.

Use this code for documented cases of acquired kyphosis specifically located in the thoracolumbar spine, where the underlying cause is not congenital or related to poor posture. Documentation should clearly specify "secondary kyphosis" or an acquired etiology (e.g., post-traumatic, degenerative, infectious) and its localization to the thoracolumbar region.

• Differentiate from M40.0- (postural kyphosis) and M40.2- (other kyphosis, unspecified).
• Ensure documentation specifies "secondary" and the "thoracolumbar region" to support this specific code.
• Code any underlying cause of the secondary kyphosis (e.g., fracture, infection) first, if applicable, following ICD-10-CM sequencing guidelines.