| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Painting of perianal warts | Procedure site | False | Anal structure | Inferred relationship | Some | 1 | 
| Perianal fistula | Finding site | False | Anal structure | Inferred relationship | Some |  | 
| Dysplasia of anus (disorder) | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Specimen from anus obtained by excision of anal polyp (specimen) | Specimen source topography | True | Anal structure | Inferred relationship | Some | 1 | 
| Specimen from anus obtained by abdominoperineal resection (specimen) | Specimen source topography | True | Anal structure | Inferred relationship | Some | 1 | 
| Anal intraepithelial neoplasia grade II (disorder) | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Anal intraepithelial neoplasia grade I (disorder) | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Cutback of covered anus | Procedure site | False | Anal structure | Inferred relationship | Some | 1 | 
| Congenital small anus | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Anoscopy with biopsy | Procedure site | False | Anal structure | Inferred relationship | Some | 1 | 
| Congenital absence of anus with fistula | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Transposition of tissue of anus (procedure) | Procedure site | False | Anal structure | Inferred relationship | Some | 1 | 
| Congenital anourethral fistula | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Congenital absence of anus | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Endoscopic destruction of lesion of anus | Procedure site | False | Anal structure | Inferred relationship | Some | 1 | 
| Ectopic anus | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Anal pap smear | Procedure site | False | Anal structure | Inferred relationship | Some |  | 
| Cutback of covered anus | Procedure site | False | Anal structure | Inferred relationship | Some | 2 | 
| Congenital small anus | Finding site | False | Anal structure | Inferred relationship | Some | 2 | 
| Anoscopy with biopsy | Procedure site | False | Anal structure | Inferred relationship | Some | 2 | 
| Congenital absence of anus with fistula | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Transposition of tissue of anus (procedure) | Procedure site | False | Anal structure | Inferred relationship | Some | 2 | 
| Congenital anourethral fistula | Finding site | False | Anal structure | Inferred relationship | Some | 2 | 
| Congenital absence of anus | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Endoscopic destruction of lesion of anus | Procedure site | False | Anal structure | Inferred relationship | Some | 2 | 
| Ectopic anus | Finding site | False | Anal structure | Inferred relationship | Some | 2 | 
| Interno-external hemorrhoid | Finding site | False | Anal structure | Inferred relationship | Some |  | 
| Sentinel pile | Finding site | False | Anal structure | Inferred relationship | Some |  | 
| Repair of obstetric laceration of anus | Procedure site | False | Anal structure | Inferred relationship | Some | 1 | 
| Excision of diverticulum of anus | Procedure site - Indirect (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Incision and drainage of intramural anal abscess with submuscular fistulectomy | Procedure site - Indirect (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Congenital stricture of anus NOS | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Congenital stricture of anus NOS | Finding site | False | Anal structure | Inferred relationship | Some | 2 | 
| Anal margin hematoma | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Anal margin hematoma | Finding site | False | Anal structure | Inferred relationship | Some | 2 | 
| Cutback of covered anus | Procedure site | False | Anal structure | Inferred relationship | Some | 1 | 
| Cutback of covered anus | Procedure site | False | Anal structure | Inferred relationship | Some | 2 | 
| Anoscopy with biopsy | Procedure site | False | Anal structure | Inferred relationship | Some | 1 | 
| Anoscopy with biopsy | Procedure site | False | Anal structure | Inferred relationship | Some | 2 | 
| Transposition of tissue of anus (procedure) | Procedure site | False | Anal structure | Inferred relationship | Some | 1 | 
| Transposition of tissue of anus (procedure) | Procedure site | False | Anal structure | Inferred relationship | Some | 2 | 
| Congenital anourethral fistula | Finding site | True | Anal structure | Inferred relationship | Some | 2 | 
| Congenital anourethral fistula | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Hematoma of anus | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Hematoma of anus | Finding site | False | Anal structure | Inferred relationship | Some | 2 | 
| Congenital stricture of anus with fistula | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Congenital stricture of anus with fistula | Finding site | False | Anal structure | Inferred relationship | Some | 2 | 
| Congenital stricture of anus with fistula | Finding site | False | Anal structure | Inferred relationship | Some | 3 | 
| Excision of anal skin tag (procedure) | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Excision of perianal wart | Procedure site - Direct (attribute) | True | Anal structure | Inferred relationship | Some | 3 | 
| Excision of anal polyp | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Destruction of lesion of anus | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Cauterisation of lesion of anus | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Laser destruction of lesion of anus | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Cryotherapy to lesion of anus | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Cryotherapy to perianal warts | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Painting of perianal warts | Procedure site - Direct (attribute) | True | Anal structure | Inferred relationship | Some | 3 | 
| Intersphincteric fistula | Finding site | True | Anal structure | Inferred relationship | Some | 1 | 
| Suprasphincteric anal fistula | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Extrasphincteric fistula | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Direct anal fistula | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| High anal fistula | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Injury of anus | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Excision of multiple anal papillae | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Peranal destruction of lesion anus (procedure) | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Excision of sentinel pile | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Excision of anal fissure and island flap closure | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Anal papillectomy | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Papillectomy of single anal tag | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Anal fistulectomy, multiple | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Anal fistulectomy, complex | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Endoscopic destruction of lesion of anus | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Anal fistulectomy, subcutaneous | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Excision of lesion of anus | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Excision of diverticulum of anus | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Endoscopic excision of lesion of anus | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Anal fistulectomy, submuscular | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Excision of lesion of anus, extensive | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Incision and drainage of intramural anal abscess with submuscular fistulectomy | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 2 | 
| Cauterization of anus | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Anal fistulectomy | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Anal fistulectomy, second stage | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Splinter of anus, without major open wound | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Splinter of anus without major open wound, infected | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Anal tag removal | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Anal tag removal | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 2 | 
| Other specified excision of lesion of anus | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Excision of lesion of anus NOS | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Cauterization of perianal warts NEC | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Other specified destruction of lesion of anus | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Destruction of lesion of anus NOS | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Superficial injury of anus NOS, without major open wound | Finding site | False | Anal structure | Inferred relationship | Some | 1 | 
| Biopsy of lesion of anus | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Anoscopy with biopsy | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 2 | 
| Anal fistulectomy, multiple | Procedure site - Indirect (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Curettage of anus | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Anal fistulectomy, complex | Procedure site - Indirect (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Biopsy of anus | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Anal fistulectomy, subcutaneous | Procedure site - Indirect (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Biopsy of anorectal wall by anal approach | Procedure site - Direct (attribute) | False | Anal structure | Inferred relationship | Some | 1 | 
| Anal fistulectomy, submuscular | Procedure site - Indirect (attribute) | False | Anal structure | Inferred relationship | Some | 1 |