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Official Description

Image-guided fluid collection drainage by catheter (eg, abscess, hematoma, seroma, lymphocele, cyst); peritoneal or retroperitoneal, percutaneous

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 49406 refers to the procedure of image-guided fluid collection drainage by catheter, specifically targeting fluid accumulations such as abscesses, hematomas, seromas, lymphoceles, or cysts. This procedure is performed in the peritoneal or retroperitoneal cavities and is executed using a percutaneous approach. The physician utilizes imaging techniques, including fluoroscopy, ultrasound, or computed tomography, to accurately locate the fluid collection within various anatomical structures, including the digestive, respiratory, urogenital, or endocrine systems, as well as in the spleen, heart, or great vessels. During the procedure, a catheter with a sheath is carefully introduced into the cavity containing the fluid. This involves passing the catheter through the organ that houses the fluid collection and into the fluid-filled space. Once access is achieved, the fluid is drained, and the cavity may be flushed with sterile saline or an antibiotic solution to ensure the removal of all pus, blood, and other fluids. Depending on the clinical situation, the catheter may either be removed after the drainage is complete or left in place for continuous drainage. This procedure is essential for managing fluid collections that may cause discomfort or complications if left untreated.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 49406 is indicated for the drainage of various types of fluid collections that may arise in different anatomical locations. The following conditions are explicitly mentioned as indications for this procedure:

  • Abscess A localized collection of pus that can cause pain and swelling, requiring drainage to alleviate symptoms and prevent further complications.
  • Hematoma A collection of blood outside of blood vessels, often resulting from trauma, which may require drainage if it causes significant pressure or discomfort.
  • Seroma A pocket of clear serous fluid that can develop after surgery or injury, necessitating drainage to promote healing and reduce swelling.
  • Lymphocele A collection of lymphatic fluid that can occur post-surgery or due to lymphatic obstruction, requiring drainage to relieve symptoms.
  • Cyst A fluid-filled sac that can form in various tissues, which may need to be drained if it becomes symptomatic or infected.

2. Procedure

The procedure for CPT® Code 49406 involves several critical steps to ensure effective drainage of the fluid collection. The following procedural steps are outlined:

  • Step 1: Imaging Guidance The physician begins by utilizing imaging techniques such as fluoroscopy, ultrasound, or computed tomography to accurately identify the location of the fluid collection within the peritoneal or retroperitoneal cavity. This imaging is crucial for ensuring precise access to the fluid-filled space.
  • Step 2: Catheter Introduction Once the fluid collection is located, a catheter with a sheath is introduced into the cavity. This step involves carefully passing the catheter through the organ that contains the fluid collection, ensuring that it is positioned correctly within the fluid-filled cavity.
  • Step 3: Fluid Drainage After the catheter is in place, the physician proceeds to drain the fluid collection. This may involve flushing the cavity with sterile saline or an antibiotic solution to clear any pus, blood, or other fluids, ensuring that the site is thoroughly cleaned.
  • Step 4: Catheter Management Following the drainage, the physician decides whether to remove the catheter or leave it in place for continuous drainage. If left in place, the catheter is typically connected to a drainage bag or wall suction to facilitate ongoing fluid removal.

3. Post-Procedure

After the completion of the procedure, the patient may require monitoring to assess for any complications or signs of infection. If the catheter is left in place, care instructions will be provided for managing the drainage system, including how to maintain cleanliness and monitor for any changes in the drainage output. The physician may schedule follow-up appointments to evaluate the site and ensure that the fluid collection has resolved adequately. Patients should be advised to report any unusual symptoms, such as increased pain, fever, or changes in the drainage characteristics, to their healthcare provider promptly.

Short Descr IMAGE CATH FLUID PERI/RETRO
Medium Descr IMG-GUIDE FLUID COLLXN DRAINAG CATH PERITON PERQ
Long Descr Image-guided fluid collection drainage by catheter (eg, abscess, hematoma, seroma, lymphocele, cyst); peritoneal or retroperitoneal, percutaneous
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 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) P1G - Major procedure - Other
MUE 2
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
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
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).
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
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.
MG The order for this service does not have applicable appropriate use criteria in the qualified clinical decision support mechanism consulted by the ordering professional
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
CR Catastrophe/disaster related
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.)
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
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.
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.)
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
AG Primary physician
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
KX Requirements specified in the medical policy have been met
LT Left side (used to identify procedures performed on the left side of the body)
MH Unknown if ordering professional consulted a clinical decision support mechanism for this service, related information was not provided to the furnishing professional or provider
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
Q3 Live kidney donor surgery and related services
QQ Ordering professional consulted a qualified clinical decision support mechanism for this service and the related data was provided to the furnishing professional
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
XP Separate practitioner, a service that is distinct because it was performed by a different practitioner
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.
2014-07-01 Changed Editorial revision of the parenthetical notes following codes 49323 and 49406, to refer the user to code 49062 rather than 49060 for open drainage to the peritoneal cavity. Effective 2014-01-01.
2014-01-01 Added Added
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