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Official Description

Contrast injection for assessment of abscess or cyst via previously placed drainage catheter or tube (separate procedure)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

A contrast injection for assessment of an abscess or cyst via a previously placed drainage catheter or tube is a medical procedure coded as CPT® 49424. This procedure involves the use of contrast media, which is injected through an existing drainage catheter that has already been placed to manage an abscess or cyst. The primary purpose of this injection is to evaluate the characteristics of the abscess or cyst, specifically focusing on its size and location. By utilizing radiographic imaging techniques, healthcare professionals can observe the distribution of the contrast material within the abscess pocket or cyst, allowing for a detailed assessment of the condition. It is important to note that this procedure is classified as a separate procedure, meaning it is distinct from other related procedures, such as the exchange of the drainage catheter, which is coded under CPT® 49423. During the contrast injection, radiographic supervision and interpretation are also performed, ensuring that the procedure is conducted safely and effectively while providing critical information for further management of the patient's condition.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The contrast injection for assessment of an abscess or cyst via a previously placed drainage catheter is indicated in specific clinical scenarios where detailed evaluation of the abscess or cyst is necessary. The following conditions may warrant this procedure:

  • Assessment of Abscess Size This procedure is performed to determine the size of an abscess, which is crucial for deciding on further management or intervention.
  • Evaluation of Cyst Characteristics The injection helps in assessing the characteristics of a cyst, including its location and potential complications.
  • Monitoring Treatment Progress It is indicated for monitoring the effectiveness of ongoing treatment for an abscess or cyst, ensuring that the drainage is adequate and that there are no complications.

2. Procedure

The procedure for performing a contrast injection for assessment of an abscess or cyst involves several key steps, which are detailed below:

  • Preparation for Injection Prior to the injection, the healthcare provider ensures that the previously placed drainage catheter is patent and properly positioned. The area around the catheter insertion site is cleaned and prepared to maintain a sterile environment.
  • Contrast Media Injection Once prepared, contrast media is injected through the existing drainage catheter. This step is critical as it allows for the visualization of the abscess or cyst during radiographic imaging. The amount and type of contrast media used may vary based on the specific clinical scenario.
  • Radiographic Observation During the injection, radiographic imaging is conducted to observe the distribution of the contrast material within the abscess pocket or cyst. This imaging provides valuable information regarding the anatomy and any potential complications associated with the abscess or cyst.
  • Documentation of Findings After the injection and imaging, the findings are documented thoroughly. This documentation includes details about the size, location, and characteristics of the abscess or cyst, which are essential for guiding further treatment decisions.

3. Post-Procedure

Post-procedure care following a contrast injection for assessment of an abscess or cyst typically involves monitoring the patient for any immediate adverse reactions to the contrast media. Patients may be observed for a short period to ensure there are no complications, such as allergic reactions or infection at the catheter site. Additionally, the healthcare provider may provide instructions regarding any follow-up imaging or assessments that may be necessary based on the findings from the contrast injection. It is also important to ensure that the drainage catheter remains patent and functional for ongoing management of the abscess or cyst.

Short Descr ASSESS CYST CONTRAST INJECT
Medium Descr CNTRST NJX ASSMT ABSC/CST VIA DRG CATH/TUBE SPX
Long Descr Contrast injection for assessment of abscess or cyst via previously placed drainage catheter or tube (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) 0 - 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) I1F - Standard imaging - other
MUE 3
CCS Clinical Classification 97 - Other gastrointestinal diagnostic procedures
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).
GC This service has been performed in part by a resident under the direction of a teaching physician
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
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.
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
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
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.
CR Catastrophe/disaster related
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.
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.
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.
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.)
AG Primary physician
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
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)
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)
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
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
2011-01-01 Changed Short description changed.
2002-01-01 Changed Code description changed.
1998-01-01 Added First appearance in code book in 1998.
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