ICD-10-CM Book 2026 Edition

Chapters  /  Chapter 13  /  M40-M43

Deforming dorsopathies (M40-M43)

M40 Kyphosis and lordosis
CodeFirst underlying disease
Excludes1 congenital kyphosis and lordosis (Q76.4)
kyphoscoliosis (M41.-)
postprocedural kyphosis and lordosis (M96.-)
M40.0 Postural kyphosis
Excludes1 osteochondrosis of spine (M42.-)
M40.00 Postural kyphosis, site unspecified
M40.03 Postural kyphosis, cervicothoracic region
M40.04 Postural kyphosis, thoracic region
M40.05 Postural kyphosis, thoracolumbar region
M40.1 Other secondary kyphosis
M40.10 Other secondary kyphosis, site unspecified
M40.12 Other secondary kyphosis, cervical region
M40.13 Other secondary kyphosis, cervicothoracic region
M40.14 Other secondary kyphosis, thoracic region
M40.15 Other secondary kyphosis, thoracolumbar region
M40.2 Other and unspecified kyphosis
M40.20 Unspecified kyphosis
M40.202 Unspecified kyphosis, cervical region
M40.203 Unspecified kyphosis, cervicothoracic region
M40.204 Unspecified kyphosis, thoracic region
M40.205 Unspecified kyphosis, thoracolumbar region
M40.209 Unspecified kyphosis, site unspecified
M40.29 Other kyphosis
M40.292 Other kyphosis, cervical region
M40.293 Other kyphosis, cervicothoracic region
M40.294 Other kyphosis, thoracic region
M40.295 Other kyphosis, thoracolumbar region
M40.299 Other kyphosis, site unspecified
M40.3 Flatback syndrome
M40.30 Flatback syndrome, site unspecified
M40.35 Flatback syndrome, thoracolumbar region
M40.36 Flatback syndrome, lumbar region
M40.37 Flatback syndrome, lumbosacral region
M40.4 Postural lordosis
Acquired lordosis
M40.40 Postural lordosis, site unspecified
M40.45 Postural lordosis, thoracolumbar region
M40.46 Postural lordosis, lumbar region
M40.47 Postural lordosis, lumbosacral region
M40.5 Lordosis, unspecified
M40.50 Lordosis, unspecified, site unspecified
M40.55 Lordosis, unspecified, thoracolumbar region
M40.56 Lordosis, unspecified, lumbar region
M40.57 Lordosis, unspecified, lumbosacral region
M41 Scoliosis
Includes kyphoscoliosis
Excludes1 congenital scoliosis NOS (Q67.5)
congenital scoliosis due to bony malformation (Q76.3)
postural congenital scoliosis (Q67.5)
kyphoscoliotic heart disease (I27.1)
Excludes2 postprocedural scoliosis (M96.89)
postradiation scoliosis (M96.5)
M41.0 Infantile idiopathic scoliosis
M41.00 Infantile idiopathic scoliosis, site unspecified
M41.02 Infantile idiopathic scoliosis, cervical region
M41.03 Infantile idiopathic scoliosis, cervicothoracic region
M41.04 Infantile idiopathic scoliosis, thoracic region
M41.05 Infantile idiopathic scoliosis, thoracolumbar region
M41.06 Infantile idiopathic scoliosis, lumbar region
M41.07 Infantile idiopathic scoliosis, lumbosacral region
M41.08 Infantile idiopathic scoliosis, sacral and sacrococcygeal region
M41.1 Juvenile and adolescent idiopathic scoliosis
M41.11 Juvenile idiopathic scoliosis
M41.112 Juvenile idiopathic scoliosis, cervical region
M41.113 Juvenile idiopathic scoliosis, cervicothoracic region
M41.114 Juvenile idiopathic scoliosis, thoracic region
M41.115 Juvenile idiopathic scoliosis, thoracolumbar region
M41.116 Juvenile idiopathic scoliosis, lumbar region
M41.117 Juvenile idiopathic scoliosis, lumbosacral region
M41.119 Juvenile idiopathic scoliosis, site unspecified
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
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
M41.23 Other idiopathic scoliosis, cervicothoracic region
M41.24 Other idiopathic scoliosis, thoracic region
M41.25 Other idiopathic scoliosis, thoracolumbar region
M41.26 Other idiopathic scoliosis, lumbar region
M41.27 Other idiopathic scoliosis, lumbosacral region
M41.3 Thoracogenic scoliosis
M41.30 Thoracogenic scoliosis, site unspecified
M41.34 Thoracogenic scoliosis, thoracic region
M41.35 Thoracogenic scoliosis, thoracolumbar region
M41.4 Neuromuscular scoliosis
Scoliosis secondary to cerebral palsy, Friedreich's ataxia, poliomyelitis and other neuromuscular disorders
CodeAlso underlying condition
M41.40 Neuromuscular scoliosis, site unspecified
M41.41 Neuromuscular scoliosis, occipito-atlanto-axial region
M41.42 Neuromuscular scoliosis, cervical region
M41.43 Neuromuscular scoliosis, cervicothoracic region
M41.44 Neuromuscular scoliosis, thoracic region
M41.45 Neuromuscular scoliosis, thoracolumbar region
M41.46 Neuromuscular scoliosis, lumbar region
M41.47 Neuromuscular scoliosis, lumbosacral region
M41.5 Other secondary scoliosis
CodeFirst underlying disease
M41.50 Other secondary scoliosis, site unspecified
M41.52 Other secondary scoliosis, cervical region
M41.53 Other secondary scoliosis, cervicothoracic region
M41.54 Other secondary scoliosis, thoracic region
M41.55 Other secondary scoliosis, thoracolumbar region
M41.56 Other secondary scoliosis, lumbar region
M41.57 Other secondary scoliosis, lumbosacral region
M41.8 Other forms of scoliosis
M41.80 Other forms of scoliosis, site unspecified
M41.82 Other forms of scoliosis, cervical region
M41.83 Other forms of scoliosis, cervicothoracic region
M41.84 Other forms of scoliosis, thoracic region
M41.85 Other forms of scoliosis, thoracolumbar region
M41.86 Other forms of scoliosis, lumbar region
M41.87 Other forms of scoliosis, lumbosacral region
M41.9 Scoliosis, unspecified
M42 Spinal osteochondrosis
M42.0 Juvenile osteochondrosis of spine
Calvé's disease
Scheuermann's disease
Excludes1 postural kyphosis (M40.0)
M42.00 Juvenile osteochondrosis of spine, site unspecified
M42.01 Juvenile osteochondrosis of spine, occipito-atlanto-axial region
M42.02 Juvenile osteochondrosis of spine, cervical region
M42.03 Juvenile osteochondrosis of spine, cervicothoracic region
M42.04 Juvenile osteochondrosis of spine, thoracic region
M42.05 Juvenile osteochondrosis of spine, thoracolumbar region
M42.06 Juvenile osteochondrosis of spine, lumbar region
M42.07 Juvenile osteochondrosis of spine, lumbosacral region
M42.08 Juvenile osteochondrosis of spine, sacral and sacrococcygeal region
M42.09 Juvenile osteochondrosis of spine, multiple sites in spine
M42.1 Adult osteochondrosis of spine
M42.10 Adult osteochondrosis of spine, site unspecified
age Adult: [15-124]
M42.11 Adult osteochondrosis of spine, occipito-atlanto-axial region
age Adult: [15-124]
M42.12 Adult osteochondrosis of spine, cervical region
age Adult: [15-124]
M42.13 Adult osteochondrosis of spine, cervicothoracic region
age Adult: [15-124]
M42.14 Adult osteochondrosis of spine, thoracic region
age Adult: [15-124]
M42.15 Adult osteochondrosis of spine, thoracolumbar region
age Adult: [15-124]
M42.16 Adult osteochondrosis of spine, lumbar region
age Adult: [15-124]
M42.17 Adult osteochondrosis of spine, lumbosacral region
age Adult: [15-124]
M42.18 Adult osteochondrosis of spine, sacral and sacrococcygeal region
age Adult: [15-124]
M42.19 Adult osteochondrosis of spine, multiple sites in spine
age Adult: [15-124]
M42.9 Spinal osteochondrosis, unspecified
M43 Other deforming dorsopathies
Excludes1 congenital spondylolysis and spondylolisthesis (Q76.2)
hemivertebra (Q76.3-Q76.4)
Klippel-Feil syndrome (Q76.1)
lumbarization and sacralization (Q76.4)
platyspondylisis (Q76.4)
spina bifida occulta (Q76.0)
spinal curvature in osteoporosis (M80.-)
spinal curvature in Paget's disease of bone [osteitis deformans] (M88.-)
M43.0 Spondylolysis
Excludes1 congenital spondylolysis (Q76.2)
spondylolisthesis (M43.1)
M43.00 Spondylolysis, site unspecified
M43.01 Spondylolysis, occipito-atlanto-axial region
M43.02 Spondylolysis, cervical region
M43.03 Spondylolysis, cervicothoracic region
M43.04 Spondylolysis, thoracic region
M43.05 Spondylolysis, thoracolumbar region
M43.06 Spondylolysis, lumbar region
M43.07 Spondylolysis, lumbosacral region
M43.08 Spondylolysis, sacral and sacrococcygeal region
M43.09 Spondylolysis, multiple sites in spine
M43.1 Spondylolisthesis
Excludes1 acute traumatic of lumbosacral region (S33.1)
acute traumatic of sites other than lumbosacral- code to Fracture, vertebra, by region
congenital spondylolisthesis (Q76.2)
M43.10 Spondylolisthesis, site unspecified
M43.11 Spondylolisthesis, occipito-atlanto-axial region
M43.12 Spondylolisthesis, cervical region
M43.13 Spondylolisthesis, cervicothoracic region
M43.14 Spondylolisthesis, thoracic region
M43.15 Spondylolisthesis, thoracolumbar region
M43.16 Spondylolisthesis, lumbar region
M43.17 Spondylolisthesis, lumbosacral region
M43.18 Spondylolisthesis, sacral and sacrococcygeal region
M43.19 Spondylolisthesis, multiple sites in spine
M43.2 Fusion of spine
Ankylosis of spinal joint
Excludes1 ankylosing spondylitis (M45.0-)
congenital fusion of spine (Q76.4)
Excludes2 arthrodesis status (Z98.1)
pseudoarthrosis after fusion or arthrodesis (M96.0)
M43.20 Fusion of spine, site unspecified
M43.21 Fusion of spine, occipito-atlanto-axial region
M43.22 Fusion of spine, cervical region
M43.23 Fusion of spine, cervicothoracic region
M43.24 Fusion of spine, thoracic region
M43.25 Fusion of spine, thoracolumbar region
M43.26 Fusion of spine, lumbar region
M43.27 Fusion of spine, lumbosacral region
M43.28 Fusion of spine, sacral and sacrococcygeal region
M43.3 Recurrent atlantoaxial dislocation with myelopathy
M43.4 Other recurrent atlantoaxial dislocation
M43.5 Other recurrent vertebral dislocation
Excludes1 biomechanical lesions NEC (M99.-)
M43.5X Other recurrent vertebral dislocation
M43.5X2 Other recurrent vertebral dislocation, cervical region
M43.5X3 Other recurrent vertebral dislocation, cervicothoracic region
M43.5X4 Other recurrent vertebral dislocation, thoracic region
M43.5X5 Other recurrent vertebral dislocation, thoracolumbar region
M43.5X6 Other recurrent vertebral dislocation, lumbar region
M43.5X7 Other recurrent vertebral dislocation, lumbosacral region
M43.5X8 Other recurrent vertebral dislocation, sacral and sacrococcygeal region
M43.5X9 Other recurrent vertebral dislocation, site unspecified
M43.6 Torticollis
Excludes1 congenital (sternomastoid) torticollis (Q68.0)
current injury - see Injury, of spine, by body region
ocular torticollis (R29.891)
psychogenic torticollis (F45.8)
spasmodic torticollis (G24.3)
torticollis due to birth injury (P15.2)
M43.8 Other specified deforming dorsopathies
Excludes2 kyphosis and lordosis (M40.-)
scoliosis (M41.-)
M43.8X Other specified deforming dorsopathies
M43.8X1 Other specified deforming dorsopathies, occipito-atlanto-axial region
M43.8X2 Other specified deforming dorsopathies, cervical region
M43.8X3 Other specified deforming dorsopathies, cervicothoracic region
M43.8X4 Other specified deforming dorsopathies, thoracic region
M43.8X5 Other specified deforming dorsopathies, thoracolumbar region
M43.8X6 Other specified deforming dorsopathies, lumbar region
M43.8X7 Other specified deforming dorsopathies, lumbosacral region
M43.8X8 Other specified deforming dorsopathies, sacral and sacrococcygeal region
M43.8X9 Other specified deforming dorsopathies, site unspecified
M43.9 Deforming dorsopathy, unspecified
Curvature of spine NOS