Summary & Overview
CPT 83662: Foam Stability Test for Fetal Lung Maturity
CPT code 83662 represents a laboratory foam stability test used to assess fetal lung maturity by evaluating pulmonary lipoproteins important for surfactant function. This test is clinically relevant for anticipating neonatal respiratory distress syndrome and informing perinatal planning. Nationally, the code is used in obstetric and neonatal care pathways where gestational age and lung maturity influence delivery and neonatal management.
Key payers considered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Coverage and coding guidance for 83662 can affect laboratory billing, maternal-fetal care coordination, and hospital lab workflows.
Readers will find a concise overview of the clinical purpose of the test, typical sites of service, and payer coverage context. The publication also summarizes common modifiers associated with laboratory services, highlights clinical indications and implications for neonatal care, and notes where input data was unavailable. This resource is intended for coding professionals, laboratory managers, and clinical leaders seeking a national-level briefing on the use and billing context of CPT code 83662.
Billing Code Overview
CPT code 83662 describes a laboratory foam stability test performed to assess fetal lung maturity. The test evaluates surfactant-related pulmonary lipoproteins to help determine whether the fetal lungs are mature enough to support life outside the uterus and to estimate risk for respiratory distress syndrome (RDS).
Service Type: Laboratory diagnostic test
Typical Site of Service: Clinical laboratory or hospital laboratory
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A pregnant patient at risk for preterm delivery presents to the hospital or prenatal clinic for fetal lung maturity assessment. Typical indications include threatened preterm labor, preeclampsia requiring early delivery, rupture of membranes remote from term, or maternal conditions necessitating delivery before 39 weeks. A sample scenario: a 32-year-old G2P1 at 33 weeks gestation with severe preeclampsia and nonreassuring fetal testing is evaluated by Obstetrics. The clinician orders evaluation of fetal lung maturity before proceeding with planned iatrogenic preterm delivery. A specimen of amniotic fluid is obtained via amniocentesis (often performed by an obstetrician in a hospital labor and delivery unit) and sent to the clinical laboratory. The laboratory analyst performs a foam stability test to assess pulmonary surfactant presence and maturity, documented as 83662. Results are reported to the ordering provider; if results indicate pulmonary maturity, delivery planning proceeds with standard neonatal support; if immature, neonatal intensive care unit (NICU) resources are arranged. Typical site of service: hospital labor and delivery, outpatient obstetric clinic with procedural capability, or hospital-based ambulatory surgery unit. Service type: clinical laboratory diagnostic test (biochemical/physiologic assay) for fetal lung maturity.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component |