CPT 01966: Anesthesia for Induced Abortion Procedure
CPT code 01966 designates anesthesia services rendered during an induced abortion procedure. Nationally, accurate coding for this service affects billing consistency, care coordination, and coverage determinations for reproductive health services provided in outpatient surgical settings. The code captures anesthesiologist or nurse anesthetist involvement in procedural abortion care and is distinct from codes for incomplete or missed abortion (see related codes).
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, United Healthcare, and Medicare. Readers will find a concise overview of clinical context and service setting, typical payer coverage considerations, and related billing concepts. The publication outlines commonly-relevant benchmarks and policy points for payers and providers, clarifies code relationships, and highlights operational factors affecting claims processing and authorization for anesthesia during induced abortion procedures.
This summary targets a national audience and provides practical reference material for coding, billing, and policy teams seeking to align clinical documentation and reimbursement workflows for anesthesia services in reproductive care.
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Billing Code Overview
CPT code 01966 describes anesthesia services provided for an induced abortion procedure. This service typically involves administration and management of anesthesia care during a procedural termination of pregnancy. The service type is anesthesia for a surgical reproductive health procedure, and the typical site of service is an outpatient surgical or ambulatory care setting where induced abortions are performed.
Clinical & Coding Specifications
Clinical Context
A 28-year-old gravida 2 para 1 woman presents to an ambulatory surgical center for a planned induced abortion at 14 weeks gestation. Preoperative evaluation documents prior low transverse cesarean delivery scar, baseline vital signs, and ASA physical status II due to controlled asthma. The anesthesia team (anesthesiology physician or CRNA supervised by an anesthesiology physician) reviews the history, obtains consent for anesthesia, and determines that either monitored anesthesia care with intravenous sedation or general anesthesia may be required depending on patient anxiety, airway assessment, and intra-procedural pain control needs. In the procedure room, standard ASA monitors are applied, intravenous access is secured, and medications are administered for conscious sedation or general endotracheal anesthesia as clinically indicated. The anesthesia provider documents pre-anesthesia evaluation, intraoperative anesthetic management (airway technique, agents used, hemodynamic status), any complications, and post-anesthesia recovery instructions. Typical recovery occurs in the facility recovery area with discharge when criteria are met. This workflow applies to induced abortion procedures where the anesthesia service is reported separately using 01966.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
23 | Unusual anesthesia | Use when medically necessary general anesthesia is required for a procedure that normally uses local or regional anesthesia (e.g., severe anxiety or anatomical issues requiring GA for an induced abortion). |
52 | Reduced services | Use when a planned anesthesia service is partially reduced or not completed as planned. |
53 | Discontinued procedure | Use when the anesthesia service is terminated due to patient condition or intraoperative circumstances before completion of planned procedure. |
56 | Pre-operative assessment only | Use when anesthesiologist provides only pre-op evaluation and not intraoperative services. |
62 | Two surgeons | Use when two surgeons are required; may affect anesthesia billing context in complex obstetric cases. |
78 | Unplanned return to OR | Use when patient returns to the OR for a related procedure during the global period and additional anesthesia is provided. |
AA | Anesthesia by anesthesiologist | Use to indicate anesthesia services personally performed by a physician anesthesiologist when payer requires. |
AD | Medical supervision by anesthesiologist (more than four concurrent anesthesia procedures) | Use when an anesthesiologist supervises multiple concurrent anesthesia procedures per payer rules. |
QK | Medical direction of two, three, or four CRNAs or anesthetists | Use when the physician medically directs multiple CRNAs for concurrent cases. |
QX | CRNA service with qualified anesthesiologist present | Use when CRNA provides service and a qualified anesthesiologist is present and performs qualifying management. |
QS | Monitored anesthesia care (MAC) service | Use to indicate MAC when payer requires specific reporting for sedation/anesthesia management. |
59 | Distinct procedural service | Use when services are distinct/separate from other services billed on the same day (e.g., separate anesthesia for a concurrent unrelated procedure). |
22 | Increased procedural services | Use when anesthesia requires substantially greater work or resources than usual (document justification required). |
50 | Bilateral procedure | Rarely applicable; use only if two separate anesthesia services are required for bilateral procedures in same session. |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
207L00000X | Anesthesiology Physician | Physician specialists who provide anesthesia care and medical direction or supervision for 01966. |
367500000X | Certified Registered Nurse Anesthetist | CRNAs who deliver anesthesia services; may be medically directed or supervised by an anesthesiologist depending on payer rules. |
207V00000X | Obstetrics & Gynecology Physician | Proceduralist specialty performing the induced abortion; coordination with anesthesia for periprocedural management. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
O82 | Encounter for cesarean delivery without indication | May be present in the history (prior cesarean) or represent alternate obstetric encounter; relevant when prior cesarean scar influences anesthesia or surgical planning. |
O75.82 | Maternal exhaustion complicating labor and delivery | Reflects intrapartum complications; relevant if anesthesia is required for management of maternal exhaustion or concurrent obstetric interventions. |
O62.0 | Primary inadequate contractions | Relevant in labor management scenarios where inadequate contractions lead to operative interventions requiring anesthesia input. |
O66.9 | Obstructed labor, unspecified | Obstetric complication potentially requiring surgical intervention and anesthesia services. |
O34.211 | Maternal care for low transverse scar from previous cesarean delivery | Indicates prior cesarean scar that may affect anesthetic planning and obstetric management during procedures. |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
01965 | Anesthesia for incomplete or missed abortion procedure | Related anesthesia code used when the procedure addresses an incomplete or missed abortion rather than an induced abortion; used in similar clinical contexts and may be billed when that specific indication applies. |