M00–M99
Diseases of the Musculoskeletal System and Connective Tissue
Arthritis, osteoporosis, back pain, gout
M45.5
Ankylosing spondylitis of thoracolumbar region
Billable
M45.6
Ankylosing spondylitis lumbar region
Billable
M45.7
Ankylosing spondylitis of lumbosacral region
Billable
M45.8
Ankylosing spondylitis sacral and sacrococcygeal region
Billable
M45.9
Ankylosing spondylitis of unspecified sites in spine
Billable
M45.A
Non-radiographic axial spondyloarthritis
Non-billable
M45.A0
Non-radiographic axial spondyloarthritis of unspecified sites in spine
Billable
M45.A1
Non-radiographic axial spondyloarthritis of occipito-atlanto-axial region
Billable
M45.A2
Non-radiographic axial spondyloarthritis of cervical region
Billable
M45.A3
Non-radiographic axial spondyloarthritis of cervicothoracic region
Billable
M45.A4
Non-radiographic axial spondyloarthritis of thoracic region
Billable
M45.A5
Non-radiographic axial spondyloarthritis of thoracolumbar region
Billable
M45.A6
Non-radiographic axial spondyloarthritis of lumbar region
Billable
M45.A7
Non-radiographic axial spondyloarthritis of lumbosacral region
Billable
M45.A8
Non-radiographic axial spondyloarthritis of sacral and sacrococcygeal region
Billable
M45.AB
Non-radiographic axial spondyloarthritis of multiple sites in spine
Billable
M46
Other inflammatory spondylopathies
Non-billable
M46.0
Spinal enthesopathy
Non-billable
M46.00
Spinal enthesopathy, site unspecified
Billable
M46.01
Spinal enthesopathy, occipito-atlanto-axial region
Billable
M46.02
Spinal enthesopathy, cervical region
Billable
M46.03
Spinal enthesopathy, cervicothoracic region
Billable
M46.04
Spinal enthesopathy, thoracic region
Billable
M46.05
Spinal enthesopathy, thoracolumbar region
Billable
M46.06
Spinal enthesopathy, lumbar region
Billable
M46.07
Spinal enthesopathy, lumbosacral region
Billable
M46.08
Spinal enthesopathy, sacral and sacrococcygeal region
Billable
M46.09
Spinal enthesopathy, multiple sites in spine
Billable
M46.1
Sacroiliitis, not elsewhere classified
Billable
M46.2
Osteomyelitis of vertebra
Non-billable
M46.20
Osteomyelitis of vertebra, site unspecified
Billable
M46.21
Osteomyelitis of vertebra, occipito-atlanto-axial region
Billable
M46.22
Osteomyelitis of vertebra, cervical region
Billable
M46.23
Osteomyelitis of vertebra, cervicothoracic region
Billable
M46.24
Osteomyelitis of vertebra, thoracic region
Billable
M46.25
Osteomyelitis of vertebra, thoracolumbar region
Billable
M46.26
Osteomyelitis of vertebra, lumbar region
Billable
M46.27
Osteomyelitis of vertebra, lumbosacral region
Billable
M46.28
Osteomyelitis of vertebra, sacral and sacrococcygeal region
Billable
M46.3
Infection of intervertebral disc (pyogenic)
Non-billable
M46.30
Infection of intervertebral disc (pyogenic), site unspecified
Billable
M46.31
Infection of intervertebral disc (pyogenic), occipito-atlanto-axial region
Billable
M46.32
Infection of intervertebral disc (pyogenic), cervical region
Billable
M46.33
Infection of intervertebral disc (pyogenic), cervicothoracic region
Billable
M46.34
Infection of intervertebral disc (pyogenic), thoracic region
Billable
M46.35
Infection of intervertebral disc (pyogenic), thoracolumbar region
Billable
M46.36
Infection of intervertebral disc (pyogenic), lumbar region
Billable
M46.37
Infection of intervertebral disc (pyogenic), lumbosacral region
Billable
M46.38
Infection of intervertebral disc (pyogenic), sacral and sacrococcygeal region
Billable
M46.39
Infection of intervertebral disc (pyogenic), multiple sites in spine
Billable
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