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Official Description

Small intestinal endoscopy, enteroscopy beyond second portion of duodenum, not including ileum; with control of bleeding (eg, injection, bipolar cautery, unipolar cautery, laser, heater probe, stapler, plasma coagulator)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 44366 refers to a specific medical procedure known as small intestinal endoscopy, specifically an enteroscopy that extends beyond the second portion of the duodenum, excluding the ileum. This procedure is primarily performed to examine the small intestine for abnormalities and to control any bleeding that may be present. The duodenum, which is the first section of the small intestine, is divided into four distinct portions: the duodenal bulb or cap, the descending portion, the transverse portion, and the ascending portion. During the procedure, the patient is typically administered a local anesthetic spray to numb the mouth and throat, facilitating the insertion of a flexible fiberoptic endoscope. This endoscope is a thin, flexible tube equipped with a light and camera, allowing for direct visualization of the intestinal mucosa. The endoscope is carefully advanced through the esophagus and into the duodenum, where the physician inspects the mucosal surfaces for any signs of abnormalities, such as lesions or bleeding. The examination may extend into the jejunum, the second part of the small intestine, but does not include the ileum, which is the final section. If any bleeding is detected during the procedure, various techniques can be employed to control it, including the use of thermal modalities like bipolar or unipolar cautery, heater probes, or laser coagulation. Additionally, injections of epinephrine may be utilized to constrict blood vessels and help manage bleeding. Overall, this procedure is crucial for diagnosing and treating conditions affecting the small intestine, particularly those involving bleeding.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 44366 is indicated for various clinical scenarios where examination and intervention in the small intestine are necessary. The following conditions may warrant the performance of this procedure:

  • Gastrointestinal Bleeding: The primary indication for this procedure is the presence of gastrointestinal bleeding that requires direct visualization and control beyond the second portion of the duodenum.
  • Suspicion of Small Intestinal Pathology: This includes conditions such as tumors, polyps, or other abnormalities that may be present in the small intestine, necessitating further investigation.
  • Evaluation of Inflammatory Bowel Disease: Patients with suspected or known inflammatory bowel disease may require this procedure to assess the extent of disease involvement in the small intestine.
  • Assessment of Obstruction: In cases where there is a suspected obstruction in the small intestine, this procedure can help identify the cause and location of the blockage.

2. Procedure

The procedure for CPT® Code 44366 involves several critical steps to ensure a thorough examination and effective management of any identified bleeding. The following outlines the procedural steps:

  • Preparation: The patient is prepared for the procedure, which includes fasting and possibly receiving a sedative to ensure comfort during the endoscopy. A local anesthetic spray is applied to numb the throat and mouth, facilitating the insertion of the endoscope.
  • Insertion of the Endoscope: A hollow mouthpiece is placed in the patient's mouth to keep it open. The flexible fiberoptic endoscope is then carefully inserted and advanced as the patient swallows. The endoscope is guided through the esophagus and into the duodenum, utilizing direct visualization to navigate the anatomy.
  • Inspection of the Mucosal Surfaces: Once the endoscope reaches beyond the second portion of the duodenum, the physician inspects the mucosal surfaces for any abnormalities, such as lesions, ulcers, or signs of bleeding. The examination may extend into the jejunum, allowing for a comprehensive assessment of the small intestine.
  • Identification of Bleeding Sites: If any bleeding is observed during the inspection, the physician identifies the specific site of bleeding for further intervention.
  • Control of Bleeding: Various techniques are employed to control the bleeding. This may include the application of a contact thermal modality, such as bipolar or unipolar cautery, or a heater probe directly to the bleeding site. Pressure and heat are applied to achieve hemostasis. Additionally, an injection of epinephrine may be administered to constrict blood vessels and assist in controlling the bleeding.
  • Use of Noncontact Devices: In cases where contact methods are not suitable, noncontact devices such as YAG laser coagulation or argon plasma coagulation may be utilized to coagulate the bleeding site effectively.
  • Closure of Lacerations: If there are any tears or lacerations, staples or hemoclips may be used to approximate the margins and promote healing.
  • Withdrawal of the Endoscope: After the examination and any necessary interventions are completed, the endoscope is carefully withdrawn, and the physician may perform a final inspection of the duodenum and jejunum to ensure no further issues are present.

3. Post-Procedure

After the completion of the procedure, the patient is monitored for any immediate complications, particularly related to sedation and the intervention performed. Recovery typically involves observation in a post-anesthesia care unit until the effects of sedation wear off. Patients may experience some throat discomfort due to the endoscope's passage, which usually resolves quickly. Instructions regarding diet and activity levels post-procedure are provided, and follow-up appointments may be scheduled to discuss findings and any further treatment options if necessary. It is essential to monitor for any signs of complications, such as persistent bleeding or infection, and to seek medical attention if these occur.

Short Descr SMALL BOWEL ENDOSCOPY
Medium Descr ENTEROSCOPY > 2ND PRTN W/CONTROL BLEEDING
Long Descr Small intestinal endoscopy, enteroscopy beyond second portion of duodenum, not including ileum; with control of bleeding (eg, injection, bipolar cautery, unipolar cautery, laser, heater probe, stapler, plasma coagulator)
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 44360  Small intestinal endoscopy, enteroscopy beyond second portion of duodenum, not including ileum; 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 Surgical procedure on ASC list in CY 2007; payment based on OPPS relative payment weight.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P8I - Endoscopy - other
MUE 1
CCS Clinical Classification 99 - Other OR gastrointestinal therapeutic procedures
GC This service has been performed in part by a resident under the direction of a teaching physician
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.
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
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.
25 Significant, separately identifiable evaluation and management service by the same physician or other qualified health care professional on the same day of the procedure or other service: it may be necessary to indicate that on the day a procedure or service identified by a cpt code was performed, the patient's condition required a significant, separately identifiable e/m service above and beyond the other service provided or beyond the usual preoperative and postoperative care associated with the procedure that was performed. a significant, separately identifiable e/m service is defined or substantiated by documentation that satisfies the relevant criteria for the respective e/m service to be reported (see evaluation and management services guidelines for instructions on determining level of e/m service). the e/m service may be prompted by the symptom or condition for which the procedure and/or service was provided. as such, different diagnoses are not required for reporting of the e/m services on the same date. this circumstance may be reported by adding modifier 25 to the appropriate level of e/m service. note: this modifier is not used to report an e/m service that resulted in a decision to perform surgery. see modifier 57 for significant, separately identifiable non-e/m services, see modifier 59.
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.
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
ET Emergency services
GA Waiver of liability statement issued as required by payer policy, individual case
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
GW Service not related to the hospice patient's terminal condition
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
Q5 Service furnished under a reciprocal billing arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
Q6 Service furnished under a fee-for-time compensation arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
SG Ambulatory surgical center (asc) facility service
X2 Continuous/focused services: for reporting services by clinicians whose expertise is needed for the ongoing management of a chronic disease or a condition that needs to be managed and followed with no planned endpoint to the relationship; reporting clinician service examples include but are not limited to: a rheumatologist taking care of the patient's rheumatoid arthritis longitudinally but not providing general primary care services
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
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Notes
2017-01-01 Changed Moderate (Conscious) Sedation flag removed. See new Moderate Sedation category.
2002-01-01 Changed Code description changed.
Pre-1990 Added Code added.
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