Summary & Overview
CPT 59320: Vaginal Cervical Cerclage for Incompetent Cervix
CPT code 59320 represents a vaginal cervical cerclage: suturing an incompetent cervix to prevent premature dilation before term. This surgical obstetric procedure is clinically important because it can reduce the risk of mid-trimester pregnancy loss and preterm birth for selected patients. It is commonly performed in hospital outpatient departments, ambulatory surgical centers, and appropriately equipped obstetric clinics.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication provides national-level context on clinical indications, common sites of service, and payer coverage patterns. Readers will find concise benchmarks for utilization and reimbursement where available, summaries of relevant policy guidance from major payers, and practical notes on coding and billing considerations tied to the procedure description. The report also outlines clinical context for when a vaginal cerclage is typically used and highlights areas where coverage rules and prior authorization practices may influence access.
This overview is intended for billing managers, revenue cycle staff, clinicians involved in obstetric care, and policy analysts seeking a clear, national snapshot of CPT code 59320 and its operational and coverage implications.
Billing Code Overview
CPT code 59320 describes a procedure in which a provider places sutures to close an incompetent cervix that is prematurely dilating prior to term delivery. The procedure is performed via a vaginal approach.
Service type: Surgical — obstetric/gynecologic procedure (cervical cerclage)
Typical site of service: Hospital outpatient department or ambulatory surgical center; may also be performed in a labor and delivery or outpatient gynecology clinic with appropriate surgical capabilities.
Clinical & Coding Specifications
Clinical Context
A 28-year-old gravida 2 para 0 patient at 18 weeks' gestation presents with painless cervical dilation and a history of prior mid‑trimester pregnancy loss attributed to cervical insufficiency. After evaluation including transvaginal ultrasound confirming a shortened, funneling cervix and counseling regarding risks and benefits, the obstetrician schedules a transvaginal cervical cerclage. The procedure is performed in an outpatient same‑day surgery unit or labor and delivery operating room under regional or general anesthesia. The provider places a nonabsorbable suture around the cervix (McDonald or Shirodkar technique) and secures it to prevent further dilation. Postoperative monitoring includes maternal vital signs, fetal heart rate assessment when viable, and short observation prior to discharge with instructions for pelvic rest and follow‑up. Removal of the cerclage is typically planned at 36–37 weeks or earlier if labor, membrane rupture, or other obstetric indications occur.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier specified (neutral) | Rarely used; not applied as a billed modifier — included in payer lists only. |
11 | Professional component |