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
INPAT INPAT_ICD8(71310) Osteo-arthritis and allied conditions, Spondylarthritis cervicalis 575
INPAT INPAT_ICD8(71312) Osteo-arthritis and allied conditions, Spondylarthritis lumbalis sive lumbosacralis 557
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(M464) Discitis, unspecified 356
OUTPAT OUTPAT_ICD10(M464) Discitis, unspecified 351
INPAT INPAT_ICD10(M469) Inflammatory spondylopathy, unspecified 311
INPAT INPAT_ICD10(M463) Infection of intervertebral disc (pyogenic) 267
OUTPAT OUTPAT_ICD10(M463) Infection of intervertebral disc (pyogenic) 236
INPAT INPAT_ICD10(M461) Sacroiliitis, not elsewhere classified 204
OUTPAT OUTPAT_ICD10(M468) Other specified inflammatory spondylopathies 172
OUTPAT OUTPAT_ICD10(M460) Spinal enthesopathy 160
OUTPAT OUTPAT_ICD10(M462) Osteomyelitis of vertebra 87
INPAT INPAT_ICD8(71319) Osteo-arthritis and allied conditions, Spondylarthritis NUD 68
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(M464) Discitis, unspecified. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 63
OUTPAT OUTPAT_ICD10(M465) Other infective spondylopathies 60
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(M463) Infection of intervertebral disc (pyogenic). Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 55
INPAT INPAT_ICD10(M462) Osteomyelitis of vertebra 50
INPAT INPAT_ICD8(71311) Osteo-arthritis and allied conditions, Spondylarthritis thoracica 50
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
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(M460) Spinal enthesopathy. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 37
INPAT INPAT_ICD10(M460) Spinal enthesopathy 31
INPAT INPAT_ICD10(M465) Other infective spondylopathies 30
INPAT INPAT_ICD9(7208A) Other inflammatory spondylopathies 28
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(M46) Other inflammatory spondylopathies. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 26
INPAT INPAT_ICD10(M468) Other specified inflammatory spondylopathies 24
DEATH DEATH_ICD10(M45) Ankylosing spondylitis 13
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(M462) Osteomyelitis of vertebra. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 10
OUTPAT OUTPAT_ICD10(M46) Other inflammatory spondylopathies 9
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(M465) Other infective spondylopathies. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 7
DEATH DEATH_ICD10(M464) Discitis, unspecified 5