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Official Description

Injection of air or contrast into peritoneal cavity (separate procedure)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 49400 refers to the procedure involving the injection of air or contrast material into the peritoneal cavity, which is classified as a separate procedure. This technique is typically performed using radiographic guidance, which allows for precise needle placement. The procedure begins with the insertion of a needle through the abdominal wall into the peritoneal cavity, the space within the abdomen that houses various organs. Once the needle is correctly positioned, air may be injected to create a pneumoperitoneum, a condition where air is introduced into the peritoneal cavity, often utilized for diagnostic purposes or to facilitate other procedures. Alternatively, a contrast agent may be injected, which is a substance that enhances the visibility of structures within the peritoneal cavity during imaging studies. Following the injection, separate reportable radiographs, or X-ray images, are obtained to visualize the distribution of the air or contrast within the cavity, aiding in the assessment of abdominal conditions or guiding further interventions. This procedure is essential in various diagnostic and therapeutic contexts, providing valuable information for healthcare professionals in managing patient care.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 49400 is indicated for specific clinical scenarios where visualization of the peritoneal cavity is necessary. The following conditions may warrant the use of this procedure:

  • Diagnostic Evaluation The injection of air or contrast may be performed to assess for the presence of free fluid, abscesses, or other abnormalities within the peritoneal cavity.
  • Guidance for Further Procedures This procedure can provide critical imaging guidance for subsequent interventions, such as drainage of fluid collections or biopsies of abdominal masses.
  • Assessment of Abdominal Pain In cases of unexplained abdominal pain, this procedure can help identify potential causes by visualizing the peritoneal cavity.

2. Procedure

The procedure associated with CPT® Code 49400 involves several key steps that ensure accurate delivery of air or contrast into the peritoneal cavity. The following outlines the procedural steps:

  • Step 1: Preparation The patient is positioned appropriately, and the abdominal area is cleaned and sterilized to minimize the risk of infection. Local anesthesia may be administered to ensure patient comfort during the procedure.
  • Step 2: Needle Insertion Using imaging guidance, typically fluoroscopy or ultrasound, a needle is carefully inserted through the abdominal wall into the peritoneal cavity. The use of radiographic guidance is crucial for accurate placement and to avoid injury to surrounding structures.
  • Step 3: Injection of Air or Contrast Once the needle is correctly positioned within the peritoneal cavity, either air or a contrast agent is injected. If air is used, it creates a pneumoperitoneum, which can help in visualizing the cavity. If contrast is injected, it enhances the visibility of the peritoneal structures during imaging.
  • Step 4: Imaging Acquisition After the injection, separate reportable radiographs are obtained to visualize the distribution of the injected substance within the peritoneal cavity. This imaging is essential for evaluating the condition being investigated.

3. Post-Procedure

Following the completion of the procedure, the patient is monitored for any immediate complications, such as discomfort or signs of infection. Depending on the clinical context, further imaging studies may be scheduled to assess the findings from the procedure. Patients are typically advised to report any unusual symptoms, such as severe abdominal pain or fever, which may indicate complications. Recovery time may vary based on the individual patient's condition and the reason for the procedure, but most patients can resume normal activities shortly after the procedure, barring any complications.

Short Descr AIR INJECTION INTO ABDOMEN
Medium Descr INJECTION AIR/CONTRAST PERITONEAL CAVITY SPX
Long Descr Injection of air or contrast into peritoneal cavity (separate procedure)
Status Code Active Code
Global Days 000 - Endoscopic or Minor Procedure
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) 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.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Items and Services Packaged into APC Rates
ASC Payment Indicator Packaged service/item; no separate payment made.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P5E - Ambulatory procedures - other
MUE 1
CCS Clinical Classification 97 - Other gastrointestinal diagnostic procedures
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main 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.
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
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
GY Item or service statutorily excluded, does not meet the definition of any medicare benefit or, for non-medicare insurers, is not a contract benefit
LT Left side (used to identify procedures performed on the left side of the body)
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)
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
X5 Diagnostic services requested by another clinician: for reporting services by a clinician who furnishes care to the patient only as requested by another clinician or subsequent and related services requested by another clinician; this modifier is reported for patient relationships that may not be adequately captured by the above alternative categories; reporting clinician service examples include but are not limited to, the radiologist's interpretation of an imaging study requested by another clinician
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
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