M45.4
Ankylosing spondylitis, thoracic region
✦ New in TT06 (absent from QĐ4469)
Sibling codes
M45Ankylosing spondylitisM45.0Ankylosing spondylitis, multiple sites in spineM45.1Ankylosing spondylitis, occipito-atlanto-axial regionM45.2Ankylosing spondylitis, cervical regionM45.3Ankylosing spondylitis, cervicothoracic regionM45.5Ankylosing spondylitis, thoracolumbar regionM45.6Ankylosing spondylitis, lumbar regionM45.7Ankylosing spondylitis, lumbosacral regionM45.8Ankylosing spondylitis, sacral and sacrococcygeal regionM45.9Ankylosing spondylitis, site unspecified