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CPT®
46938

CPT® Code 46938
Deleted

Official Description

Cryosurgery of rectal tumor; malignant

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

CPT® Code 46938 refers to the procedure of cryosurgery specifically targeting malignant rectal tumors. Cryosurgery is a minimally invasive technique that utilizes extremely cold temperatures to destroy or diminish the size of tumors located in the rectal area. The process involves the application of liquid nitrogen, which is known for its ability to freeze tissue effectively. This freezing action not only targets malignant tumors but can also be used to treat benign tumors, although the specific code for benign tumors is CPT® Code 46937. During the procedure, a cryoprobe is either placed directly on the surface of the tumor or inserted into the tumor itself. The cryoprobe circulates liquid nitrogen through its tip, achieving supercooling of the tissue. Once the tissue reaches the necessary low temperature, or when the ice ball formed around the probe reaches the desired size, the probe is turned off, allowing the tissue to thaw. It is important to note that multiple freeze-thaw cycles may be necessary to ensure complete destruction or significant reduction of the malignant lesion. This technique is advantageous as it minimizes damage to the surrounding healthy tissue, making it a preferred option for treating rectal tumors.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 46938 is indicated for the treatment of malignant rectal tumors. These tumors may present with various symptoms, including rectal bleeding, changes in bowel habits, or unexplained weight loss. The use of cryosurgery is particularly beneficial for patients who may not be suitable candidates for more invasive surgical options due to their overall health or the specific characteristics of the tumor.

  • Malignant Rectal Tumors The primary indication for this procedure is the presence of malignant tumors in the rectal area, which require intervention to reduce their size or eliminate them.

2. Procedure

The cryosurgery procedure for malignant rectal tumors, as outlined by CPT® Code 46938, involves several key steps to ensure effective treatment.

  • Step 1: Preparation The patient is positioned appropriately, and the area around the rectum is prepared for the procedure. This may involve cleansing the area and administering anesthesia to ensure patient comfort during the cryosurgery.
  • Step 2: Application of Cryoprobe A cryoprobe is either placed on the surface of the malignant tumor or inserted directly into the tumor. This probe is designed to deliver liquid nitrogen to the targeted tissue.
  • Step 3: Freezing the Tumor Liquid nitrogen circulates through the cryoprobe, supercooling the probe tip. The physician monitors the temperature of the tissue to ensure it reaches the desired freezing point. The formation of an ice ball around the probe indicates effective freezing of the tumor.
  • Step 4: Thawing Once the desired temperature is achieved, the cryoprobe is deactivated, allowing the frozen tissue to thaw. This thawing process is crucial as it helps to destroy the malignant cells.
  • Step 5: Repeat Cycles Depending on the size and nature of the tumor, multiple freeze-thaw cycles may be performed to ensure complete destruction or significant reduction of the malignant lesion.

3. Post-Procedure

After the cryosurgery procedure, patients may experience some discomfort or swelling in the rectal area, which is typically manageable with standard pain relief methods. Monitoring for any signs of complications, such as infection or excessive bleeding, is essential. Follow-up appointments are necessary to assess the effectiveness of the treatment and to determine if additional cryosurgery sessions are required. Patients are advised to adhere to any specific post-procedure care instructions provided by their healthcare provider to ensure optimal recovery.
Short Descr CRYOTHERAPY OF RECTAL LESION
Medium Descr CRYOTHERAPY OF RECTAL LESION
Long Descr CRYOSURG RCT TUM MAL
APC Status Indicator Significant Procedure, Multiple Reduction Applies
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) none
MUE Not applicable/unspecified.
CCS Clinical Classification 95 - Other non-OR lower GI therapeutic procedures
Date
Action
Notes
2010-01-01 Deleted -
Pre-1990 Added Code added.
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Description
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