Coding Ahead
CasePilot
Medical Coding Assistant
Case2Code
Search and Code Lookup Tool
RedactPHI
HIPAA-Compliant PHI Redaction
DetectICD10CM
ICD-10-CM Code Detection
Log in Register free account
1 code page views remaining. Guest accounts are limited to 1 page view. Register free account to get 5 more views.
Log in Register free account

Official Description

Injection procedure (eg, contrast media) for evaluation of previously placed peritoneal-venous shunt

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 49427 refers to an injection procedure specifically designed for the evaluation of a previously placed peritoneal-venous shunt. A peritoneal-venous shunt is a medical device utilized primarily in the management of ascites, which is characterized by the abnormal accumulation of fluid within the peritoneal cavity. This procedure involves the administration of a local anesthetic to the peritoneal cavity, ensuring patient comfort during the injection process. Following this, a contrast media or a radiotracer, such as technetium-99m sulfur colloid (TC99m-SC) or technetium-99m macroaggregated albumin (TC99m-MAA), is injected into the left lower quadrant of the abdomen. The choice of radiotracer is crucial for visualizing the flow and function of the shunt. In cases where a LeVeen shunt is present, the abdomen is gently massaged to facilitate the distribution of the radiotracer throughout the peritoneal cavity. Conversely, for patients with a Denver shunt, they are instructed to actively pump the system to ensure proper flow. After the injection procedure, it is essential to obtain radiographs, which are separately reportable, to assess the patency of the peritoneal-venous shunt, thereby confirming its functionality and effectiveness in managing the patient's condition.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The injection procedure described by CPT® Code 49427 is indicated for the evaluation of previously placed peritoneal-venous shunts in patients experiencing ascites. The following conditions may warrant this procedure:

  • Ascites A condition characterized by the accumulation of fluid in the peritoneal cavity, often requiring the placement of a shunt for management.
  • Evaluation of Shunt Functionality To assess the patency and effectiveness of a previously placed peritoneal-venous shunt.
  • Monitoring for Complications To identify any potential complications associated with the shunt, such as blockage or malfunction.

2. Procedure

The procedure for CPT® Code 49427 involves several critical steps to ensure accurate evaluation of the peritoneal-venous shunt:

  • Step 1: Administration of Local Anesthetic The first step involves the injection of a local anesthetic into the peritoneal cavity. This is performed to minimize discomfort for the patient during the subsequent injection of contrast media or radiotracer.
  • Step 2: Injection of Contrast Media or Radiotracer Following the administration of the local anesthetic, a contrast media or a radiotracer, such as TC99m-SC or TC99m-MAA, is injected into the left lower quadrant of the abdomen. This step is crucial for visualizing the flow through the shunt.
  • Step 3: Shunt Manipulation Depending on the type of shunt present, specific actions are taken to ensure proper distribution of the radiotracer. For patients with a LeVeen shunt, the abdomen is gently massaged to facilitate the spread of the radiotracer. In contrast, patients with a Denver shunt are instructed to pump the system actively to promote flow.
  • Step 4: Radiographic Evaluation After the injection procedure, radiographs are obtained to evaluate the patency of the peritoneal-venous shunt. This imaging is essential for determining whether the shunt is functioning correctly and to identify any potential issues that may require further intervention.

3. Post-Procedure

Post-procedure care following the injection procedure for CPT® Code 49427 typically includes monitoring the patient for any immediate adverse reactions to the injected materials. Patients may be advised to rest and avoid strenuous activities for a short period following the procedure. Additionally, the results of the radiographs should be reviewed promptly to assess the functionality of the shunt. Any findings that indicate complications or the need for further intervention should be communicated to the patient and documented in their medical record. Follow-up appointments may be scheduled to discuss the results and any necessary next steps in the management of the patient's condition.

Short Descr INJECTION ABDOMINAL SHUNT
Medium Descr INJECT EVALUATE PREVIOUS PERITONEAL-VENOUS SHUNT
Long Descr Injection procedure (eg, contrast media) for evaluation of previously placed peritoneal-venous shunt
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) P1G - Major procedure - Other
MUE 1
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).
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.)
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
Date
Action
Notes
2011-01-01 Changed Medium description changed. Short description changed.
1993-01-01 Added First appearance in code book in 1993.
Code
Description
Code
Description
Code
Description
Code
Description
Code
Description
CasePilot

Get instant expert-level medical coding assistance.

Ask about:
CPT Codes Guidelines Modifiers Crosswalks NCCI Edits Compliance Medicare Coverage
Example: "What is CPT code 99213?" or "Guidelines for E/M services"