M41.126 Adolescent idiopathic scoliosis, lumbar region

Billable ICD-10-CM code, FY2026.

Applies from M41 Scoliosis

Includes

• kyphoscoliosis

Excludes1 (never code together)

• congenital scoliosis NOS (Q67.5)
• congenital scoliosis due to bony malformation (Q76.3)
• postural congenital scoliosis (Q67.5)
• kyphoscoliotic heart disease (I27.1)

Excludes2 (not included here)

• postprocedural scoliosis (M96.89)
• postradiation scoliosis (M96.5)

MS-DRG index

Defines the logic of DRG(s) 456-458 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 737.30 Scoliosis [and kyphoscoliosis], idiopathic (approximate)

Code annotations containing back-references to M41.126

Back-references to M41

• Type 1 Excludes: M40 Kyphosis and lordosis ("kyphoscoliosis (M41.-)")
• Type 2 Excludes: M43.8 Other specified deforming dorsopathies ("scoliosis (M41.-)")
• Type 2 Excludes: M95 Other acquired deformities of musculoskeletal system and connective tissue ("deforming dorsopathies (M40-M43)")

Diagnosis Index entries for M41.126

• Scoliosis (acquired) (postural) › idiopathic › adolescent › lumbar region

Nearby codes

• M41.12 Adolescent idiopathic scoliosis
• M41.122 Adolescent idiopathic scoliosis, cervical region
• M41.123 Adolescent idiopathic scoliosis, cervicothoracic region
• M41.124 Adolescent idiopathic scoliosis, thoracic region
• M41.125 Adolescent idiopathic scoliosis, thoracolumbar region
• M41.126 Adolescent idiopathic scoliosis, lumbar region (this code)
• M41.127 Adolescent idiopathic scoliosis, lumbosacral region
• M41.129 Adolescent idiopathic scoliosis, site unspecified
• M41.2 Other idiopathic scoliosis
• M41.20 Other idiopathic scoliosis, site unspecified
• M41.22 Other idiopathic scoliosis, cervical region