CPT® Code 0058T

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1. Indications

The procedure of cryopreservation of ovarian reproductive tissue is indicated for various clinical scenarios where preservation of fertility is desired. This includes:

• Fertility Preservation Patients undergoing medical treatments such as chemotherapy or radiation therapy that may adversely affect ovarian function may opt for this procedure to preserve their reproductive options.
• Ovarian Dysfunction Individuals with conditions leading to diminished ovarian reserve or function may seek cryopreservation to maintain the possibility of future conception.
• Age-Related Fertility Decline Women who wish to delay childbearing for personal or professional reasons may choose to preserve ovarian tissue to enhance their chances of conception later in life.

2. Procedure

The cryopreservation of ovarian reproductive tissue involves several critical procedural steps, which are as follows:

• Step 1: Harvesting Ovarian Tissue The procedure begins with the surgical harvesting of ovarian reproductive tissue, which is performed during a separate, reportable surgical intervention. This step is crucial as it collects the tissue that will be preserved for future use.
• Step 2: Assessment of Tissue Once the ovarian tissue is harvested, it undergoes a thorough assessment to evaluate its viability and suitability for cryopreservation. This assessment ensures that only healthy tissue is preserved.
• Step 3: Preparation of Cryoprotectant Solutions A series of cryoprotectant solutions specifically formulated for ovarian reproductive tissue are prepared. These solutions are essential for protecting the cells during the freezing process.
• Step 4: Mince and Immerse Tissue The harvested ovarian tissue is minced into smaller pieces to facilitate better penetration of the cryoprotectants. The minced tissue is then immersed in the prepared cryoprotectant solutions, starting with lower concentrations and gradually increasing the concentration to protect the cells effectively.
• Step 5: Freezing the Tissue The ovarian tissue can be frozen either by direct contact with the cryogenic medium or by placing it in straws or vials before freezing. This step is critical to ensure the tissue is preserved in a controlled manner.
• Step 6: Labeling Each straw or vial containing the ovarian tissue is labeled with identifying information, including the patient's name, identification number, and the contents of the container. This labeling is vital for tracking and ensuring the correct tissue is used in future procedures.
• Step 7: Controlled Rate Freezing The reproductive tissue is gradually cooled to -270 degrees centigrade using a controlled rate freezing chamber. This controlled cooling process is essential to prevent ice crystal formation, which can damage the cells.
• Step 8: Storage Finally, the cryopreserved ovarian tissue is stored either in the vapor phase or submerged under liquid nitrogen until it is needed for future assisted reproduction procedures.

3. Post-Procedure

After the cryopreservation procedure, the patient may require follow-up care to monitor their recovery from the surgical harvesting of the ovarian tissue. It is important to ensure that the patient is informed about the storage and future use of the preserved tissue. The tissue can remain viable for extended periods when stored correctly, allowing for future assisted reproductive options. Patients should also be counseled on the potential implications of using cryopreserved tissue in future fertility treatments, including the success rates and any associated risks.