ICD-10 CM Code M45.9
M45.9
Ankylosing spondylitis of unspecified sites in spine
Inclusion Term
- Rheumatoid arthritis of spine
Excludes Type 1
- arthropathy in Reiter's disease (M02.3-)
- juvenile (ankylosing) spondylitis (M08.1)
Excludes Type 2
- Behçet's disease (M35.2)
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