94610

Surfactant Administration Through an Endotracheal Tube

Surfactant administration, designated by CPT code 94610, is a specialized therapeutic procedure primarily performed in neonatal intensive care units (NICUs) for infants suffering from Respiratory Distress Syndrome (RDS), also known as hyaline membrane disease. Lung surfactant is a complex mixture of phospholipids and proteins that reduces surface tension at the air-liquid interface of the alveoli, preventing lung collapse during expiration. Premature infants often lack sufficient endogenous surfactant production, leading to stiff lungs, poor gas exchange, and eventual respiratory failure. The procedure involves the direct instillation of exogenous surfactant (such as poractant alfa, beractant, or calfactant) into the lungs through an endotracheal tube (ETT). This process is highly sensitive and requires meticulous preparation and monitoring. The surfactant is typically warmed to room temperature and gently swirled rather than shaken before use. During administration, the infant is monitored for changes in heart rate, oxygen saturation, and blood pressure. The medication is often divided into multiple aliquots, with the infant's position changed between doses to ensure uniform distribution throughout the lung lobes. Following administration, the clinician must carefully manage ventilator settings, as lung compliance can improve rapidly, posing a risk of over-distension or pneumothorax if pressures are not adjusted promptly. CPT 94610 covers the technical aspect of the administration by a physician or other qualified health care professional, ensuring the life-saving medication reaches the distal airways effectively.

Clinical Indications

  • Neonatal Respiratory Distress Syndrome (RDS)
  • Prophylactic treatment in very low birth weight infants (<1250g)
  • Meconium aspiration syndrome (off-label)
  • Persistent pulmonary hypertension of the newborn (PPHN)
  • Inadequate endogenous surfactant production due to prematurity
  • Congenital surfactant deficiency

Procedure Steps

  1. Confirm patient identification and obtain informed consent from guardians.
  2. Ensure the patient is properly intubated with a secure, patent endotracheal tube (ETT).
  3. Warm the surfactant vial to room temperature naturally (do not use artificial heat).
  4. Suction the ETT prior to administration to ensure clear passage.
  5. Position the infant in a supine or slightly tilted position as per protocol.
  6. Draw the surfactant into a sterile syringe using an appropriately sized needle.
  7. Disconnect the ventilator circuit briefly or utilize a closed-suction valve adapter for insertion.
  8. Insert a small-diameter catheter through the ETT until the tip is just above the carina.
  9. Instill the surfactant in specified aliquots (portions).
  10. Rotate the infant's position between aliquots (e.g., right side, left side) to facilitate even distribution.
  11. Provide manual ventilation or resume mechanical ventilation between doses to clear the ETT and spread the liquid.
  12. Monitor oxygen saturation and heart rate continuously throughout the process.
  13. Auscultate lungs and adjust ventilator settings (e.g., PIP and FiO2) based on improved compliance.
  14. Document the total volume administered, patient tolerance, and post-procedure stability.

Coding Guidelines

  • CPT 94610 is specifically for the administration of the surfactant through an endotracheal tube.
  • Do not report 94610 in conjunction with neonatal intensive care codes 99468-99476, as surfactant administration is considered an inclusive component of those global daily services.
  • The surfactant medication itself should be reported separately using HCPCS Level II codes (e.g., J2470 for poractant alfa).
  • If endotracheal intubation (CPT 31500) is performed as a distinct procedure to facilitate the administration, it may be reported separately depending on payer-specific rules and the clinical scenario.
  • For infants not receiving global neonatal intensive care services, 94610 may be billed for each session of administration.
  • Ensure documentation clearly reflects the medical necessity and the specific delivery method via ETT.

Associated ICD-10 Codes