| 49.01 | Incision of perianal abscess |
| 49.02 | Other incision of perianal tissue |
| 49.03 | Excision of perianal skin tags |
| 49.04 | Other excision of perianal tissue |
| 49.11 | Anal fistulotomy |
| 49.12 | Anal fistulectomy |
| 49.21 | Anoscopy |
| 49.22 | Biopsy of perianal tissue |
| 49.23 | Biopsy of anus |
| 49.29 | Other diagnostic procedures on anus and perianal tissue |
| 49.31 | Endoscopic excision or destruction of lesion or tissue of anus |
| 49.39 | Other local excision or destruction of lesion or tissue of anus |
| 49.41 | Reduction of hemorrhoids |
| 49.42 | Injection of hemorrhoids |
| 49.43 | Cauterization of hemorrhoids |
| 49.44 | Destruction of hemorrhoids by cryotherapy |
| 49.45 | Ligation of hemorrhoids |
| 49.46 | Excision of hemorrhoids |
| 49.47 | Evacuation of thrombosed hemorrhoids |
| 49.49 | Other procedures on hemorrhoids |
| 49.51 | Left lateral anal sphincterotomy |
| 49.52 | Posterior anal sphincterotomy |
| 49.59 | Other anal sphincterotomy |
| 49.6 | Excision of anus |
| 49.71 | Suture of laceration of anus |
| 49.72 | Anal cerclage |
| 49.73 | Closure of anal fistula |
| 49.74 | Gracilis muscle transplant for anal incontinence |
| 49.75 | Implantation or revision of artificial anal sphincter |
| 49.76 | Removal of artificial anal sphincter |
| 49.79 | Other repair of anal sphincter |
| 49.91 | Incision of anal septum |
| 49.92 | Insertion of subcutaneous electrical anal stimulator |
| 49.93 | Other incision of anus |
| 49.94 | Reduction of anal prolapse |
| 49.95 | Control of (postoperative) hemorrhage of anus |
| 49.99 | Other operations on anus |
