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Official Description

Enterectomy, resection of small intestine; single resection and anastomosis

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 44120 involves an enterectomy, which is a surgical operation that entails the resection of a segment of the small intestine. This procedure is performed when a portion of the small intestine is diseased or damaged and requires removal. The term "anastomosis" refers to the surgical connection made between the two ends of the intestine after the diseased section has been excised. The operation typically begins with the physician making a midline incision in the abdominal cavity to gain access to the internal organs. During the procedure, any adhesions—abnormal fibrous bands that may have formed between organs—are carefully lysed, or cut, using both blunt and sharp dissection techniques. Once the abdominal contents, including vital organs such as the liver and gallbladder, are exposed, the surgeon inspects them for any additional issues. The specific segment of the small intestine that is affected is then identified and meticulously dissected from the surrounding tissues. Blood vessels supplying the affected area are clamped and ligated with sutures to prevent excessive bleeding. The actual division of the small intestine is performed using either staples or noncrushing clamps to ensure minimal trauma to the remaining intestinal tissue. After the diseased segment is removed, the remaining proximal and distal segments of the small intestine are joined together through anastomosis, which can be configured in various ways, such as end-to-end, end-to-side, or side-to-side, depending on the surgical requirements. Finally, the abdominal cavity is closed in layers to ensure proper healing and recovery. This code is specifically used to report a single resection and anastomosis, while additional resections and anastomoses are reported using CPT® Code 44121.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure is indicated for various conditions affecting the small intestine, including but not limited to:

  • Intestinal Obstruction - A blockage in the small intestine that prevents the normal passage of contents.
  • Malignancy - The presence of cancerous tumors within the small intestine that necessitate removal.
  • Ischemia - Insufficient blood supply to a portion of the intestine, leading to tissue death.
  • Diverticulitis - Inflammation or infection of diverticula in the small intestine, which may require surgical intervention.
  • Trauma - Injury to the small intestine that may require resection to repair damage.

2. Procedure

The procedure consists of several critical steps that ensure the successful resection and anastomosis of the small intestine:

  • Step 1: Incision - The surgeon begins by making a midline incision in the abdominal wall to access the abdominal cavity. This incision allows for adequate exposure of the internal organs and the small intestine.
  • Step 2: Lysis of Adhesions - Once the abdominal cavity is open, the surgeon identifies and lyses any adhesions that may be present. This is done using both blunt and sharp dissection techniques to free the small intestine from surrounding tissues and organs.
  • Step 3: Inspection of Abdominal Contents - The surgeon inspects the abdominal contents, including the liver and gallbladder, to assess for any additional abnormalities or complications that may need to be addressed during the procedure.
  • Step 4: Identification and Dissection of Diseased Segment - The specific segment of the small intestine that is diseased is identified. The surgeon carefully dissects this segment free from surrounding tissues, ensuring that blood vessels are clamped and ligated as necessary to control bleeding.
  • Step 5: Division of the Small Intestine - The diseased section of the small intestine is then divided using staples or noncrushing clamps. This step is crucial to ensure that the remaining segments can be properly reconnected.
  • Step 6: Anastomosis - After the diseased segment is removed, the proximal and distal ends of the small intestine are sutured together in an anastomosis. The configuration of the anastomosis may vary, including options such as end-to-end, end-to-side, or side-to-side, depending on the surgical requirements and anatomy.
  • Step 7: Closure of the Abdomen - Finally, the abdominal cavity is closed in layers to promote healing. This involves suturing the abdominal wall and ensuring that all layers are properly aligned and secured.

3. Post-Procedure

Post-procedure care involves monitoring the patient for any complications, such as infection or leakage at the anastomosis site. Patients are typically advised to follow a specific diet and may require pain management. Recovery time can vary based on the individual and the extent of the surgery, but patients are generally encouraged to gradually resume normal activities as tolerated. Follow-up appointments are essential to assess healing and ensure that the anastomosis is functioning properly.

Short Descr REMOVAL OF SMALL INTESTINE
Medium Descr ENTRC RESCJ SMALL INTESTINE 1 RESCJ & ANAST
Long Descr Enterectomy, resection of small intestine; single resection and anastomosis
Status Code Active Code
Global Days 090 - Major Surgery
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 2 - Standard payment adjustment rules for multiple 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) 2 - Payment restriction for assistants at surgery does not apply to this procedure...
Co-Surgeons (62) 1 - Co-surgeons could be paid, though supporting documentation is required...
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Inpatient Procedures, not paid under OPPS
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P1G - Major procedure - Other
MUE 1
CCS Clinical Classification 75 - Small bowel resection

This is a primary code that can be used with these additional add-on codes.

44121 Addon Code MPFS Status: Active Code APC C CPT Assistant Article Illustration for Code Enterectomy, resection of small intestine; each additional resection and anastomosis (List separately in addition to code for primary procedure)
96547 Add On Code MPFS Status: Active Code APC N Intraoperative hyperthermic intraperitoneal chemotherapy (HIPEC) procedure, including separate incision(s) and closure, when performed; first 60 minutes (List separately in addition to code for primary procedure)
96548 Add On Code MPFS Status: Active Code APC N Intraoperative hyperthermic intraperitoneal chemotherapy (HIPEC) procedure, including separate incision(s) and closure, when performed; each additional 30 minutes (List separately in addition to code for primary procedure)
GC This service has been performed in part by a resident under the direction of a teaching physician
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).
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.
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
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).
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
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.)
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.
82 Assistant surgeon (when qualified resident surgeon not available): the unavailability of a qualified resident surgeon is a prerequisite for use of modifier 82 appended to the usual procedure code number(s).
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.)
55 Postoperative management only: when 1 physician or other qualified health care professional performed the postoperative management and another performed the surgical procedure, the postoperative component may be identified by adding modifier 55 to the usual procedure number.
47 Anesthesia by surgeon: regional or general anesthesia provided by the surgeon may be reported by adding modifier 47 to the basic service. (this does not include local anesthesia.) note: modifier 47 would not be used as a modifier for the anesthesia procedures.
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).
54 Surgical care only: when 1 physician or other qualified health care professional performs a surgical procedure and another provides preoperative and/or postoperative management, surgical services may be identified by adding modifier 54 to the usual procedure number.
62 Two surgeons: when 2 surgeons work together as primary surgeons performing distinct part(s) of a procedure, each surgeon should report his/her distinct operative work by adding modifier 62 to the procedure code and any associated add-on code(s) for that procedure as long as both surgeons continue to work together as primary surgeons. each surgeon should report the co-surgery once using the same procedure code. if additional procedure(s) (including add-on procedure(s) are performed during the same surgical session, separate code(s) may also be reported with modifier 62 added. note: if a co-surgeon acts as an assistant in the performance of additional procedure(s), other than those reported with the modifier 62, during the same surgical session, those services may be reported using separate procedure code(s) with modifier 80 or modifier 82 added, as appropriate.
76 Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
77 Repeat procedure by another physician or other qualified health care professional: it may be necessary to indicate that a basic procedure or service was repeated by another physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 77 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
81 Minimum assistant surgeon: minimum surgical assistant services are identified by adding modifier 81 to the usual procedure number.
95 Synchronous telemedicine service rendered via a real-time interactive audio and video telecommunications system: synchronous telemedicine service is defined as a real-time interaction between a physician or other qualified health care professional and a patient who is located at a distant site from the physician or other qualified health care professional. the totality of the communication of information exchanged between the physician or other qualified health care professional and the patient during the course of the synchronous telemedicine service must be of an amount and nature that would be sufficient to meet the key components and/or requirements of the same service when rendered via a face-to-face interaction. modifier 95 may only be appended to the services listed in appendix p. appendix p is the list of cpt codes for services that are typically performed face-to-face, but may be rendered via a real-time (synchronous) interactive audio and video telecommunications system.
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
ET Emergency services
FS Split (or shared) evaluation and management visit
GJ "opt out" physician or practitioner emergency or urgent service
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
LT Left side (used to identify procedures performed on the left side of the body)
PD Diagnostic or related non diagnostic item or service provided in a wholly owned or operated entity to a patient who is admitted as an inpatient within 3 days
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
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
RT Right side (used to identify procedures performed on the right side of the body)
U7 Medicaid level of care 7, as defined by each state
X4 Episodic/focused services: for reporting services by clinicians who provide focused care on particular types of treatment limited to a defined period and circumstance; the patient has a problem, acute or chronic, that will be treated with surgery, radiation, or some other type of generally time-limited intervention; reporting clinician service examples include but are not limited to, the orthopedic surgeon performing a knee replacement and seeing the patient through the postoperative period
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
XP Separate practitioner, a service that is distinct because it was performed by a different practitioner
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
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Action
Notes
2018-01-01 Note AMA Guidelines removed.
2013-01-01 Changed Medium Descriptor changed.
Pre-1990 Added Code added.
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