Summary & Overview
CPT 59001: Therapeutic Amniocentesis for Polyhydramnios
CPT code 59001 represents a therapeutic amniocentesis performed to remove excess amniotic fluid for the treatment of polyhydramnios, using real-time ultrasound guidance. This obstetric procedure is clinically significant because it can relieve maternal symptoms, reduce risk of preterm labor from uterine overdistension, and improve fetal and maternal hemodynamics in severe cases. Nationally, correct coding for this procedure affects claims adjudication, appropriate site-of-service classification, and quality reporting for high-risk obstetric care.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of clinical context for therapeutic amniocentesis, typical sites of service where CPT code 59001 is billed, and the landscape of payer coverage practices. The publication also outlines common billing considerations, frequently used modifiers (listed separately), and where to find applicable documentation standards.
The content is intended to help coders, billing professionals, and policy analysts understand the clinical procedure denoted by CPT code 59001, its relevance to maternal-fetal medicine, and the payer environment that influences reimbursement and utilization management. Data not available in the input are noted where applicable.
Billing Code Overview
CPT code 59001 describes a therapeutic amniocentesis procedure in which a provider inserts a needle through the patient’s abdominal wall into the fetal amniotic sac to withdraw excess amniotic fluid for treatment of polyhydramnios. The service is performed using real-time ultrasound guidance to locate the amniotic sac and monitor needle placement.
Service type: Therapeutic obstetric procedure (amniotic fluid drainage)
Typical site of service: Hospital inpatient or outpatient setting, labor and delivery unit, or specialized obstetric procedure suite
Data not available in the input for associated taxonomies, ICD-10 diagnoses, and related codes.
Clinical & Coding Specifications
Clinical Context
A 32-year-old gravida 2 para 1 at 30 weeks gestation presents with progressive maternal dyspnea and an ultrasound demonstrating marked polyhydramnios with an amniotic fluid index (AFI) >25 cm. Fetal anatomy scan is otherwise reassuring but the mother reports increasing abdominal distention and discomfort. After multidisciplinary discussion between maternal-fetal medicine and obstetrics, the decision is made to perform therapeutic amniocentesis (amnioreduction) to remove excess fluid and relieve symptoms.
The clinical workflow: the patient is consented, reviewed for coagulation status, and placed supine or semirecumbent. Under continuous fetal monitoring, the provider performs a sterile transabdominal amniocentesis using real-time ultrasound guidance to insert a spinal needle into the amniotic sac and withdraw excess fluid. Vital signs and fetal heart rate are monitored throughout. A sample may be sent for laboratory testing if indicated. Postprocedure observation includes fetal monitoring and maternal assessment for complications (e.g., contraction, leakage, bleeding). Documentation includes indication (polyhydramnios), estimated volume removed, ultrasound guidance, fetal heart monitoring, and any complications.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when work or time substantially exceeds typical for due to technical difficulty or extensive effort. |