Coding Ahead
CasePilot
Medical Coding Assistant
Case2Code
Search and Code Lookup Tool
RedactPHI
HIPAA-Compliant PHI Redaction
DetectICD10CM
ICD-10-CM Code Detection
Log in Register free account
1 code page views remaining. Guest accounts are limited to 1 page view. Register free account to get 5 more views.
Log in Register free account

Official Description

Anoscopy; with dilation (eg, balloon, guide wire, bougie)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Anoscopy with dilation is a medical procedure aimed at treating strictures of the anus, which are narrowings that can occur due to various factors such as previous surgeries, radiation therapy, or inflammatory diseases. During this procedure, the anus is first visually inspected, and a digital rectal examination may be performed to assess the condition further. The process begins with the insertion of an obturator into the anoscope, which is then carefully introduced into the anus. The anoscope is advanced toward the stricture using a twisting motion while the patient is instructed to bear down, facilitating the passage of the instrument. Once the anoscope reaches the stricture, the obturator is removed, and an eyepiece is attached to allow for direct visualization. A guidewire is then advanced through the anoscope to a location just proximal to the stricture, ensuring precise placement. Following this, a balloon catheter is introduced over the guidewire and positioned within the stricture. The balloon is inflated to dilate the narrowed area and is held in place for a brief period before being deflated and removed. Alternatively, a bougie, which is a flexible cylindrical instrument, may be utilized to stretch the stricture by passing it through the narrowed passage. After the dilation process, the area is re-examined using the anoscope to confirm the success of the dilation and to check for any potential injuries to the anal tissue that may have occurred during the procedure.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure of anoscopy with dilation is indicated for patients experiencing strictures of the anus. These strictures may arise from various underlying conditions, including:

  • Surgical Complications Strictures can develop as a complication following surgical interventions in the anal region.
  • Radiation Therapy Patients who have undergone radiation treatment for pelvic cancers may experience strictures as a side effect.
  • Inflammatory Diseases Conditions such as inflammatory bowel disease (IBD) can lead to the formation of strictures in the anal area.

2. Procedure

The procedure of anoscopy with dilation involves several key steps that are performed to ensure effective treatment of the anal stricture.

  • Step 1: Preparation and Inspection The procedure begins with the patient being positioned appropriately, followed by a visual inspection of the anus. A digital rectal examination may be performed to assess the condition of the anal canal and to identify the location of the stricture.
  • Step 2: Insertion of the Anoscope An obturator is inserted into the anoscope, which is then carefully introduced into the anus. The anoscope is advanced toward the stricture using a twisting motion while the patient bears down, facilitating the passage of the instrument through the anal canal.
  • Step 3: Visualization and Guidewire Placement Once the anoscope reaches the stricture, the obturator is removed, and an eyepiece is attached to allow for direct visualization of the stricture. A guidewire is then advanced through the anoscope to a point just proximal to the stricture, ensuring accurate placement for the subsequent dilation.
  • Step 4: Dilation with Balloon Catheter A balloon catheter is passed over the guidewire and positioned in the middle of the stricture. The balloon is inflated to dilate the narrowed area, and it is held in place for a short period to allow for effective stretching of the stricture.
  • Step 5: Removal of the Balloon and Inspection After the dilation is complete, the balloon is deflated and removed. The area is then inspected using the anoscope to confirm that the dilation has been successful and to check for any injuries to the anal tissue that may have occurred during the procedure.
  • Step 6: Alternative Dilation with Bougie Alternatively, if necessary, a bougie may be used to dilate the stricture. The bougie is passed through the stricture to stretch it, providing another method of achieving the desired dilation.

3. Post-Procedure

After the completion of the anoscopy with dilation, patients may be monitored for any immediate complications. It is important to assess the area for any signs of injury or bleeding. Patients may experience some discomfort or mild pain following the procedure, which can typically be managed with over-the-counter pain relief. Instructions regarding activity restrictions and follow-up appointments will be provided to ensure proper recovery and monitoring of the treated stricture. Patients should be advised to report any unusual symptoms, such as increased pain, bleeding, or changes in bowel habits, to their healthcare provider promptly.

Short Descr ANOSCOPY AND DILATION
Medium Descr ANOSCOPY W/DILATION
Long Descr Anoscopy; with dilation (eg, balloon, guide wire, bougie)
Status Code Active Code
Global Days 000 - Endoscopic or Minor Procedure
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 3 - Special payment adjustment rules for multiple endoscopic procedures apply.
Bilateral Surgery (50) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 1 - Statutory payment restriction for assistants at surgery applies to this procedure...
Co-Surgeons (62) 0 - Co-surgeons not permitted for this procedure.
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Endoscopic Base Code 46600  Anoscopy; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Procedure or Service, Multiple Reduction Applies
ASC Payment Indicator Office-based surgical procedure added to ASC list in CY 2008 or later with MPFS nonfacility PE RVUs; payment based on MPFS nonfacility PE RVUs.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P8I - Endoscopy - other
MUE 1
CCS Clinical Classification 77 - Proctoscopy and anorectal biopsy
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
59 Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25.
51 Multiple procedures: when multiple procedures, other than e/m services, physical medicine and rehabilitation services or provision of supplies (eg, vaccines), are performed at the same session by the same individual, the primary procedure or service may be reported as listed. the additional procedure(s) or service(s) may be identified by appending modifier 51 to the additional procedure or service code(s). note: this modifier should not be appended to designated "add-on" codes (see appendix d).
58 Staged or related procedure or service by the same physician or other qualified health care professional during the postoperative period: it may be necessary to indicate that the performance of a procedure or service during the postoperative period was: (a) planned or anticipated (staged); (b) more extensive than the original procedure; or (c) for therapy following a surgical procedure. this circumstance may be reported by adding modifier 58 to the staged or related procedure. note: for treatment of a problem that requires a return to the operating/procedure room (eg, unanticipated clinical condition), see modifier 78.
78 Unplanned return to the operating/procedure room by the same physician or other qualified health care professional following initial procedure for a related procedure during the postoperative period: it may be necessary to indicate that another procedure was performed during the postoperative period of the initial procedure (unplanned procedure following initial procedure). when this procedure is related to the first, and requires the use of an operating/procedure room, it may be reported by adding modifier 78 to the related procedure. (for repeat procedures, see modifier 76.)
79 Unrelated procedure or service by the same physician or other qualified health care professional during the postoperative period: the individual may need to indicate that the performance of a procedure or service during the postoperative period was unrelated to the original procedure. this circumstance may be reported by using modifier 79. (for repeat procedures on the same day, see modifier 76.)
GC This service has been performed in part by a resident under the direction of a teaching physician
PT Colorectal cancer screening test; converted to diagnostic test or other procedure
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
Date
Action
Notes
2002-01-01 Changed Code description changed.
Pre-1990 Added Code added.
Code
Description
Code
Description
Code
Description
Code
Description
Code
Description
CasePilot

Get instant expert-level medical coding assistance.

Ask about:
CPT Codes Guidelines Modifiers Crosswalks NCCI Edits Compliance Medicare Coverage
Example: "What is CPT code 99213?" or "Guidelines for E/M services"