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CPT®
49041

CPT® Code 49041
Deleted

Official Description

Drainage of subdiaphragmatic or subphrenic abscess; percutaneous

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 49041 refers to the procedure for the percutaneous drainage of a subdiaphragmatic or subphrenic abscess. A subdiaphragmatic abscess is defined as a collection of pus that forms in the abdominal cavity beneath the diaphragm, while a subphrenic abscess occurs above the diaphragm in the space that separates the chest from the abdominal cavity. This procedure is essential for managing these types of abscesses, which can arise due to various underlying conditions, including infections or complications from surgery. The percutaneous approach involves using imaging guidance, such as fluoroscopy, ultrasound, or computed tomography (CT), to accurately locate the abscess. Once the abscess is identified, a needle is inserted into the cavity to aspirate fluid, confirming the presence of pus. Following this, a drainage catheter is placed to facilitate the removal of the abscess contents. The procedure is designed to effectively drain the abscess, flush the cavity with sterile saline or antibiotic solution, and ensure continuous drainage, thereby promoting healing and preventing further complications.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The percutaneous drainage of a subdiaphragmatic or subphrenic abscess, as described by CPT® Code 49041, is indicated for the following conditions:

  • Subdiaphragmatic Abscess - A collection of pus located in the abdominal cavity beneath the diaphragm, often resulting from infections or complications from abdominal surgery.
  • Subphrenic Abscess - An accumulation of pus situated above the diaphragm, typically in the space separating the chest and abdominal cavities, which may occur due to various infectious processes.

2. Procedure

The procedure for CPT® Code 49041 involves several critical steps to ensure effective drainage of the abscess:

  • Step 1: Imaging Guidance - The procedure begins with the use of imaging techniques such as fluoroscopy, ultrasound, or CT to accurately locate the suspected abscess cavity. This guidance is essential for ensuring precise needle placement.
  • Step 2: Needle Insertion - A needle is carefully inserted into the identified abscess cavity. This step is crucial for aspirating fluid from the cavity, which helps confirm the presence of pus.
  • Step 3: Fluid Aspiration - Once the needle is in place, fluid is aspirated from the abscess cavity. The aspirated fluid is analyzed to verify the diagnosis and assess the nature of the contents.
  • Step 4: Placement of Drainage Catheter - After confirming the presence of pus, a drainage catheter is inserted into the abscess cavity. This catheter is vital for facilitating the continuous drainage of the abscess contents.
  • Step 5: Flushing the Cavity - The abscess cavity is then flushed with sterile saline or an antibiotic solution. This step is performed to clear the cavity of any remaining pus, blood, and necrotic tissue, promoting a cleaner environment for healing.
  • Step 6: Continuous Drainage - Finally, the drainage catheter is left in place to provide ongoing drainage of the abscess cavity, which is essential for preventing re-accumulation of fluid and ensuring proper recovery.

3. Post-Procedure

Post-procedure care for patients undergoing CPT® Code 49041 includes monitoring the drainage output and assessing the site for any signs of infection or complications. The drainage catheter may remain in place for a specified duration, depending on the volume of fluid being drained and the clinical judgment of the healthcare provider. Patients are typically advised to follow up for evaluation and possible removal of the catheter once the abscess has adequately drained and healing is underway. Additionally, any prescribed antibiotics should be taken as directed to prevent infection.
Short Descr DRAIN PERCUT ABDOM ABSCESS
Medium Descr DRG SUBDIAPHRAGMATIC/SUBPHRENIC ABSCESS PRQ
Long Descr Drainage of subdiaphragmatic or subphrenic abscess; 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 Procedure or Service, Multiple Reduction Applies
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) none
MUE Not applicable/unspecified.
CCS Clinical Classification 99 - Other OR gastrointestinal therapeutic procedures
Date
Action
Notes
2014-01-01 Deleted Deleted
2011-01-01 Changed Short description changed.
1998-01-01 Added Code added.
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