SM50-SM5Z block
Anorectal disorders (TM2)
9 subordinate codes
SM50Proctalgia disorder (TM2)SM51Anal fissure disorder (TM2)SM52Fistula in ano disorder (TM2)SM53Haemorrhoids disorder (TM2)SM54Proctitis disorder (TM2)SM55Rectal prolapse disorder (TM2)SM56Anal abscess disorder (TM2)4B4YOther specified diseases of the immune system4B4ZDiseases of the immune system, unspecified