M453-char group
Ankylosing spondylitis
⇄ Primary-code rule changed vs QĐ4469
Coding rules (TT06)
- ●Avoid — more specific 4-5 char codes exist (see below)
Coding guidance (WHO 2019)
[See site code before M40] Incl.: Rheumatoid arthritis of spine Excl.: arthropathy in Reiter disease (M02.3) Behçet disease (M35.2) juvenile (ankylosing) spondylitis (M08.1)
Codes within M45
M45.0Ankylosing spondylitis, multiple sites in spineM45.1Ankylosing spondylitis, occipito-atlanto-axial regionM45.2Ankylosing spondylitis, cervical regionM45.3Ankylosing spondylitis, cervicothoracic regionM45.4Ankylosing spondylitis, thoracic regionM45.5Ankylosing spondylitis, thoracolumbar regionM45.6Ankylosing spondylitis, lumbar regionM45.7Ankylosing spondylitis, lumbosacral regionM45.8Ankylosing spondylitis, sacral and sacrococcygeal regionM45.9Ankylosing spondylitis, site unspecified