Adolescent idiopathic scoliosis, thoracolumbar region

This code signifies a structural, lateral curvature of the spine in the thoracolumbar region, of unknown origin, manifesting during adolescence. It is characterized by vertebral rotation and often presents with a rib hump or asymmetry of the trunk.

Apply this code for patients diagnosed with idiopathic scoliosis localized to the thoracolumbar spine, typically presenting between the ages of 10 and 18. Documentation should clearly state "adolescent idiopathic scoliosis" and specify the "thoracolumbar region" as the primary site of curvature.

• Ensure the documentation specifies "adolescent" and "idiopathic" to differentiate from congenital, neuromuscular, or adult-onset scoliosis.
• Verify the specific spinal region (thoracolumbar) is documented; avoid using this code for thoracic or lumbar-only curves.
• Do not confuse with M41.2-, other idiopathic scoliosis, or M41.4-, neuromuscular scoliosis.