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Official Description

Repair of omphalocele (Gross type operation); first stage

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

An omphalocele is a congenital defect characterized by a significant abnormality in the ventral abdominal wall, where there is a notable absence of essential structures such as abdominal muscles, fascia, and skin. This defect results in the protrusion of intra-abdominal organs, which are covered by a membrane composed of peritoneum and amnion. The most common form of omphalocele occurs at the umbilical ring, where the umbilical cord is directly attached to the omphalocele sac. The procedure coded as CPT® 49610 refers to the first stage of the surgical repair of an omphalocele, known as a Gross type operation. During this initial stage, critical steps are taken to manage the defect, including the ligation of umbilical vessels and the amputation of the umbilical cord. The surgical approach involves making an incision at the edge of the defect, followed by careful dissection of the skin from the underlying fascia, while ensuring that the amnion remains intact. The procedure culminates in the development of skin flaps that are then closed over the omphalocele, which results in the formation of a large ventral hernia. It is important to note that this is only the first stage of the repair; a subsequent stage, typically performed 6 months to 2 years later, involves the repair of the ventral hernia and the reopening of the skin flaps. For the second stage of the operation, the appropriate code is CPT® 49611.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure coded as CPT® 49610 is indicated for the surgical repair of an omphalocele, a congenital defect that presents with the following conditions:

  • Congenital Abdominal Wall Defect The presence of an omphalocele, where intra-abdominal structures protrude through a defect in the abdominal wall.
  • Absence of Abdominal Muscles A significant lack of abdominal musculature, fascia, and skin in the affected area, necessitating surgical intervention.
  • Protrusion of Intra-Abdominal Organs The need to address the protrusion of organs that are covered by a membrane, which can lead to complications if not repaired.

2. Procedure

The first stage of the repair of an omphalocele, as described by CPT® 49610, involves several critical procedural steps:

  • Ligation of Umbilical Vessels The procedure begins with the careful ligation of the umbilical vessels, which is essential to prevent excessive bleeding and to prepare the area for further surgical intervention.
  • Amputation of the Umbilical Cord Following the ligation, the umbilical cord is amputated, which is a necessary step in the management of the omphalocele and helps to facilitate the closure of the defect.
  • Incision at the Edge of the Defect A surgical incision is made at the edge of the omphalocele defect, allowing access to the underlying structures and facilitating the repair process.
  • Dissection of Skin from Fascia The skin is meticulously dissected from the fascia, ensuring that the amnion remains intact. This step is crucial for preserving the integrity of the surrounding tissues.
  • Development of Skin Flaps Skin flaps are then developed and elevated over the omphalocele. This technique is employed to cover the defect while leaving a large ventral hernia, which will be addressed in the subsequent stage of the repair.

3. Post-Procedure

After the completion of the first stage of the omphalocele repair, patients typically require careful monitoring and post-operative care. The expected recovery involves managing the large ventral hernia that remains after the skin flaps are closed. It is essential to provide appropriate wound care to prevent infection and ensure proper healing. Follow-up appointments will be necessary to assess the healing process and to plan for the second stage of the repair, which is usually performed 6 months to 2 years later. During this subsequent stage, the previously developed skin flaps will be reopened, and the ventral hernia will be repaired to restore normal abdominal wall integrity.

Short Descr REPAIR UMBILICAL LESION
Medium Descr RPR OMPHALOCELE GROSS TYP OPRATION 1ST STG
Long Descr Repair of omphalocele (Gross type operation); first stage
Status Code Active Code
Global Days 090 - Major Surgery
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) 2 - Payment restriction for assistants at surgery does not apply to this procedure...
Co-Surgeons (62) 1 - Co-surgeons could be paid, though supporting documentation is required...
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Inpatient Procedures, not paid under OPPS
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P1G - Major procedure - Other
MUE 1
CCS Clinical Classification 86 - Other hernia repair

This is a primary code that can be used with these additional add-on codes.

49623 Add-on Code Resequenced Code MPFS Status: Active Code APC N Removal of total or near total non-infected mesh or other prosthesis at the time of initial or recurrent anterior abdominal hernia repair or parastomal hernia repair, any approach (ie, open, laparoscopic, robotic) (List separately in addition to code for primary procedure)
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Pre-1990 Added Code added.
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