Alphabetic Index · main term
Bechterev's syndrome
Bechterev's syndrome is a main term in the FY2027 ICD-10-CM Alphabetic Index (Index to Diseases and Injuries). It is a cross-reference: the Index sends you to Spondylitis, ankylosing, which lists M45.9. Confirm the code in the Tabular List before you report it.
Where the Index sends you
see Spondylitis (chronic), ankylosing (chronic)
Ankylosing spondylitis of unspecified sites in spine