Source Code Name Case count Share of cases (%)
OUTPAT OUTPAT_ICD10(M45) Ankylosing spondylitis 2854
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(M45) Ankylosing spondylitis. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 1757
OUTPAT OUTPAT_ICD10(M461) Sacroiliitis, not elsewhere classified 1502
OUTPAT OUTPAT_ICD10(M469) Inflammatory spondylopathy, unspecified 1423
INPAT INPAT_ICD10(M45) Ankylosing spondylitis 1346
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(M461) Sacroiliitis, not elsewhere classified. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 526
INPAT INPAT_ICD9(7200A) Ankylosing spondylitis 444
INPAT INPAT_ICD8(71240) Rheumatoid arthritis and allied conditions, Spondylitis ankylopoietica 375
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(M469) Inflammatory spondylopathy, unspecified. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 369
INPAT INPAT_ICD10(M469) Inflammatory spondylopathy, unspecified 311
INPAT INPAT_ICD10(M461) Sacroiliitis, not elsewhere classified 204
OUTPAT OUTPAT_ICD10(M468) Other specified inflammatory spondylopathies 172
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(M468) Other specified inflammatory spondylopathies. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 48
INPAT INPAT_ICD8(72699) Affection of sacro-iliac joint 47
INPAT INPAT_ICD9(7202A) Sacroiliitis, not elsewhere classified 40
INPAT INPAT_ICD9(7209X) Unspecified inflammatory spondylopathy 40
INPAT INPAT_ICD9(7208A) Other inflammatory spondylopathies 28
INPAT INPAT_ICD10(M468) Other specified inflammatory spondylopathies 24
DEATH DEATH_ICD10(M45) Ankylosing spondylitis 13