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

Sigmoidoscopy, flexible; with endoscopic mucosal resection

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

A flexible sigmoidoscopy is a diagnostic procedure that allows for the examination of the sigmoid colon and a portion of the descending colon. This procedure is performed using a flexible sigmoidoscope, which is a long, flexible tube equipped with a light and camera. The sigmoidoscope is carefully introduced into the anus and advanced through the rectum into the sigmoid colon. During the procedure, air is insufflated into the colon to expand it, which helps to separate the mucosal folds and provides better visualization of the colon's interior. As the scope is withdrawn, the physician examines the entire circumference of the colon for any abnormalities or lesions. In cases where a mucosal lesion is identified, the procedure includes an endoscopic mucosal resection (EMR). This involves marking the borders of the lesion with electrocautery, which uses electrical current to create a precise incision. To facilitate the removal of the lesion, diluted adrenaline is injected into the submucosal layer surrounding the lesion. This injection helps to separate the mucosal layer containing the lesion from the underlying muscle, making it easier to excise the lesion. A specialized snare with a suction cup is then employed to further detach the mucosal lesion from the surrounding tissue. Once adequately separated, the lesion is excised and captured using the snare, and the sigmoidoscope is subsequently withdrawn from the colon. This procedure is essential for diagnosing and treating various conditions affecting the sigmoid colon, including polyps and early-stage cancers.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The flexible sigmoidoscopy with endoscopic mucosal resection (EMR) is indicated for several specific conditions and symptoms that warrant further investigation or intervention. These indications include:

  • Detection of Polyps The procedure is often performed to identify and remove polyps, which are abnormal growths on the mucosal surface of the colon that may lead to colorectal cancer if left untreated.
  • Diagnosis of Colorectal Cancer It is utilized in the evaluation of suspected colorectal cancer, allowing for direct visualization and potential removal of malignant lesions.
  • Management of Mucosal Lesions The procedure is indicated for the management of various mucosal lesions, including adenomas and other neoplastic changes that require excision for histological examination.
  • Investigation of Gastrointestinal Symptoms It is indicated for patients presenting with gastrointestinal symptoms such as rectal bleeding, unexplained changes in bowel habits, or abdominal pain, where a localized examination of the sigmoid colon is necessary.

2. Procedure

The procedure of flexible sigmoidoscopy with endoscopic mucosal resection involves several critical steps to ensure effective examination and treatment of the colon. The following outlines the procedural steps:

  • Step 1: Preparation and Anesthesia The patient is positioned appropriately, and local anesthesia may be administered to minimize discomfort during the procedure. The physician explains the procedure to the patient and obtains informed consent.
  • Step 2: Introduction of the Sigmoidoscope A standard flexible sigmoidoscope is gently introduced into the anus and advanced through the rectum into the sigmoid colon. Care is taken to navigate the scope smoothly to avoid trauma to the rectal and colonic walls.
  • Step 3: Air Insufflation Air is insufflated into the colon to expand it, which helps to separate the mucosal folds and enhance visibility of the colon's interior. This step is crucial for a thorough examination.
  • Step 4: Examination of the Colon As the sigmoidoscope is withdrawn, the physician examines the entire circumference of the colon for any abnormalities, including lesions, polyps, or signs of inflammation.
  • Step 5: Identification and Marking of Lesion If a mucosal lesion is identified, the borders of the lesion are marked with electrocautery. This technique uses electrical current to delineate the area for excision.
  • Step 6: Injection of Diluted Adrenaline Diluted adrenaline is injected into the submucosal layer surrounding the lesion. This injection serves to separate the mucosal layer containing the lesion from the underlying muscle, facilitating easier removal.
  • Step 7: Excision of the Lesion A snare with a suction cup is utilized to further separate the mucosal lesion from the underlying tissue. The lesion is then excised and captured using the snare, ensuring complete removal.
  • Step 8: Withdrawal of the Sigmoidoscope After the lesion has been excised, the sigmoidoscope is carefully withdrawn from the colon, and the procedure is concluded.

3. Post-Procedure

Post-procedure care following a flexible sigmoidoscopy with endoscopic mucosal resection includes monitoring the patient for any immediate complications, such as bleeding or perforation. Patients are typically advised to rest for a short period before being discharged. They may experience mild cramping or discomfort, which usually resolves quickly. Instructions regarding dietary modifications and activity restrictions may be provided, along with information on when to seek medical attention if symptoms such as severe pain, persistent bleeding, or fever occur. Follow-up appointments may be scheduled to discuss pathology results and any further treatment if necessary.

Short Descr SIGMOIDOSCOPY W/RESECTION
Medium Descr SGMDSC FLX WITH ENDOSCOPIC MUCOSAL RESECTION
Long Descr Sigmoidoscopy, flexible; with endoscopic mucosal resection
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 45330  Sigmoidoscopy, flexible; 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 Hospital Part B services paid through a comprehensive APC
ASC Payment Indicator Non office-based surgical procedure added in CY 2008 or later; payment based on OPPS relative payment weight.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P8C - Endoscopy - sigmoidoscopy
MUE 1
22 Increased procedural services: when the work required to provide a service is substantially greater than typically required, it may be identified by adding modifier 22 to the usual procedure code. documentation must support the substantial additional work and the reason for the additional work (ie, increased intensity, time, technical difficulty of procedure, severity of patient's condition, physical and mental effort required). note: this modifier should not be appended to an e/m service.
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).
52 Reduced services: under certain circumstances a service or procedure is partially reduced or eliminated at the discretion of the physician or other qualified health care professional. under these circumstances the service provided can be identified by its usual procedure number and the addition of modifier 52, signifying that the service is reduced. this provides a means of reporting reduced services without disturbing the identification of the basic service. note: for hospital outpatient reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well-being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use).
53 Discontinued procedure: under certain circumstances, the physician or other qualified health care professional may elect to terminate a surgical or diagnostic procedure. due to extenuating circumstances or those that threaten the well being of the patient, it may be necessary to indicate that a surgical or diagnostic procedure was started but discontinued. this circumstance may be reported by adding modifier 53 to the code reported by the individual for the discontinued procedure. note: this modifier is not used to report the elective cancellation of a procedure prior to the patient's anesthesia induction and/or surgical preparation in the operating suite. for outpatient hospital/ambulatory surgery center (asc) reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use).
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.
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.
74 Discontinued out-patient hospital/ambulatory surgery center (asc) procedure after administration of anesthesia: due to extenuating circumstances or those that threaten the well being of the patient, the physician may terminate a surgical or diagnostic procedure after the administration of anesthesia (local, regional block(s), general) or after the procedure was started (incision made, intubation started, scope inserted, etc). under these circumstances, the procedure started but terminated can be reported by its usual procedure number and the addition of modifier 74. note: the elective cancellation of a service prior to the administration of anesthesia and/or surgical preparation of the patient should not be reported. for physician reporting of a discontinued procedure, see modifier 53.
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.)
AG Primary physician
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
CR Catastrophe/disaster related
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
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
SG Ambulatory surgical center (asc) facility service
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
Date
Action
Notes
2017-01-01 Changed Moderate (Conscious) Sedation flag removed. See new Moderate Sedation category.
2015-01-01 Added 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"