Code is covered without prior authorization (high confidence)
Documentation Required
For thoraco-amniotic shunt (TAS) and pleuro-amniotic shunt: ultrasound documentation of fetal pleural effusion/macro-cystic lung lesion and hydrops, gestational age, pre-procedure counseling, and post-procedure imaging showing reduction in effusion/lesion size and hydrops resolution where applicable.
For fetal cardiac interventions (e.g., FAV): detailed fetal echocardiography demonstrating critical aortic stenosis with echocardiographic predictors of evolving HLHS (e.g., valve z-scores, ventricular dimensions, pressure gradients), gestational age (mid-gestation candidates), multidisciplinary counseling documentation, and plan for postnatal management and follow-up; documentation that center has required expertise and registry/quality reporting where applicable.
For LUTO and vesico-amniotic shunting: ultrasound documentation of LUTO (megacystis, oligohydramnios), fetal urine studies results if performed (to assess renal prognosis), counseling about perinatal and long-term renal outcomes, technical plan for shunt placement, and follow-up imaging; note need to document risk of shunt displacement/obstruction and plan for neonatal follow-up.
Key Coverage Criteria
CPT codes covered if selection criteria are met: 59001 (Amniocentesis; therapeutic amniotic fluid reduction (includes ultrasound guidance))
In utero fetal surgery for ablation of anastomotic vessels in acardiac twins
In utero fetal surgery for insertion of pleuro-amniotic shunt for fetal pleural effusion
In utero fetal surgery for laser ablation or occlusion of anastomotic vessels in early, severe (stages II to IV) twin-twin transfusion syndrome (see Appendix for staging classification)
In utero fetal surgery for removal of sacrococcygeal teratoma
In utero fetal surgery for repair of myelomeningocele
For fetoscopic laser ablation of type II vasa previa: ultrasound diagnosis confirming type II vasa previa (traversing vessels, velamentous cord), documentation of indications (e.g., progressive cervical shortening, contractions, high risk of membrane rupture), informed consent detailing investigational nature and risks (including PPROM), and post-procedure surveillance plan.
For investigational/experimental therapies (in utero stem cell transplantation, in utero gene therapy, in utero ventriculomegaly shunting, fetoscopic amniotic band release outside of small series): documentation of enrollment in research protocol or special consent arrangements, detailed counseling regarding unknown long-term outcomes, and institutional expertise/IRB oversight as applicable.
General: documentation of multidisciplinary counseling (maternal-fetal medicine, pediatric surgery/neonatology, pediatric subspecialists), center experience/volume and availability of specialized teams for procedure and balloon/device retrieval if applicable, and detailed informed consent specifying maternal and fetal risks, alternatives, and expected neonatal care needs.