CPT® Code 89342

1. Indications

The storage of embryos is indicated for various scenarios in assisted reproductive technology, particularly when there is a need to preserve embryos for future use. The following conditions may warrant the use of this procedure:

• Fertility Preservation: Individuals or couples undergoing medical treatments that may affect fertility, such as chemotherapy or radiation, may choose to store embryos to preserve their reproductive options.
• In Vitro Fertilization (IVF): During IVF procedures, multiple embryos may be created, and not all may be used immediately. Storing surplus embryos allows for future attempts at conception without the need for repeated egg retrievals.
• Genetic Screening: Embryos may be stored while awaiting genetic testing results to ensure that only viable and genetically healthy embryos are used in subsequent procedures.
• Timing of Transfer: Patients may wish to delay embryo transfer for personal, medical, or logistical reasons, making storage a necessary option.

2. Procedure

The procedure for the storage of embryos involves several critical steps to ensure the safe and effective preservation of the embryos. The following outlines the procedural steps:

• Step 1: Embryo Creation - Initially, embryos are created through the fertilization of oocytes with sperm, typically during an in vitro fertilization (IVF) cycle. This step is crucial as it generates the embryos that will be stored.
• Step 2: Assessment of Embryos - After fertilization, the embryos are monitored for development. Embryologists assess the quality and viability of the embryos, determining which ones are suitable for storage based on their developmental stage and morphology.
• Step 3: Cryopreservation - Selected embryos are then subjected to a cryopreservation process, where they are gradually cooled to prevent ice crystal formation, which can damage cellular structures. This is typically done using a controlled-rate freezer or a vitrification method.
• Step 4: Storage in Liquid Nitrogen - Once cryopreserved, the embryos are placed in storage containers and submerged in liquid nitrogen, maintaining a constant temperature of -270 degrees Celsius. This environment is essential for long-term preservation.
• Step 5: Monitoring Storage Conditions - Regular checks are conducted to ensure that the liquid nitrogen levels and storage conditions remain optimal. This monitoring is vital to prevent any fluctuations that could compromise the integrity of the stored embryos.

3. Post-Procedure

After the storage procedure, there are several important considerations for both the healthcare provider and the patient. The embryos can be stored for an extended period, depending on the storage protocol established by the facility. Patients are typically provided with information regarding the duration of storage and any associated fees. It is essential for patients to maintain communication with their healthcare provider regarding their future plans for embryo use, as well as to ensure that they are aware of any necessary follow-up procedures or documentation required for future embryo transfer. Additionally, the facility must continue to monitor the storage conditions regularly to ensure the ongoing viability of the embryos throughout the storage period.