Summary & Overview
CPT 00670: Anesthesia for Extensive Spine and Spinal Cord Procedures
CPT code 00670 covers anesthesia for extensive spine and spinal cord procedures, including cases involving spinal instrumentation or vascular interventions performed in the prone position. This code is significant for hospitals and surgical teams managing complex spinal surgeries, where specialized anesthesia is critical for patient safety and surgical success. The code is most frequently used in inpatient hospital settings, reflecting the complexity and intensity of these procedures.
Major national payers such as Aetna, Blue Cross Blue Shield, Cigna Health, and UnitedHealthcare recognize and reimburse for services billed under CPT code 00670. The publication provides an overview of payer coverage, clinical context, and relevant benchmarks for this anesthesia service. Readers will gain insight into the procedural scope, typical clinical scenarios, and associated billing practices, including common modifiers and related codes. Policy updates and coding trends are also discussed to help stakeholders understand the evolving landscape of anesthesia billing for spine procedures.
This summary offers a comprehensive look at CPT code 00670, equipping healthcare professionals, administrators, and policy analysts with the information needed to navigate payer requirements and clinical documentation for extensive spine anesthesia services.
CPT Code Overview
CPT code 00670 is used to report anesthesia services for extensive spine and spinal cord procedures, such as spinal instrumentation or vascular interventions, performed in the prone position. This code is specific to the field of anesthesiology and is most commonly utilized in the inpatient hospital setting (Place of Service 21). The procedure typically involves complex surgical interventions requiring specialized anesthesia care to ensure patient safety and optimal outcomes during operations on the spine and spinal cord.
Clinical & Coding Specifications
Clinical Context
A typical patient scenario involves an adult patient admitted to an inpatient hospital for extensive spinal surgery. The patient may present with severe lumbar spinal stenosis, intervertebral disc displacement, or a spinal cord disease, resulting in significant neurological symptoms or pain. The surgical procedure requires the patient to be placed in a prone position for spinal instrumentation or vascular intervention. Anesthesia services are provided throughout the operation, ensuring patient safety and comfort during complex spine and spinal cord procedures.
Coding Specifications
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Modifiers:
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QS: Monitored anesthesia care service. Used when anesthesia is provided in a manner that allows the patient to remain responsive but comfortable, typically for procedures where full general anesthesia is not required. -
QX: CRNA service with medical direction by a physician. Used when a Certified Registered Nurse Anesthetist (CRNA) provides anesthesia care under the medical direction of an anesthesiologist.
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Provider Taxonomies:
| Taxonomy Code | Specialty Name |
|---|---|
207L00000X | Anesthesiology |
207LA0401X | Pain Medicine (Anesthesiology) |
367500000X | Certified Registered Nurse Anesthetist |
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Specialties Represented:
- Anesthesiology: Physicians specializing in anesthesia care.
- Pain Medicine (Anesthesiology): Physicians with additional expertise in pain management.
- Certified Registered Nurse Anesthetist: Advanced practice nurses trained in anesthesia delivery.
Related Diagnoses
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M48.06: Spinal stenosis, lumbar region- Indicates narrowing of the spinal canal in the lumbar area, often necessitating extensive spinal surgery and anesthesia.
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M51.26: Other intervertebral disc displacement, lumbar region- Refers to abnormal displacement of lumbar intervertebral discs, which may require surgical intervention with anesthesia.
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M54.5: Low back pain- Common symptom leading to spine surgery; anesthesia is required for pain management during the procedure.
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G95.9: Disease of spinal cord, unspecified- Represents unspecified spinal cord disease, potentially requiring surgical correction under anesthesia.
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S32.9XXA: Fracture of unspecified lumbar vertebra, initial encounter for closed fracture- Acute lumbar vertebral fracture may necessitate surgical stabilization and anesthesia services.
Related CPT Codes
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22840: Posterior non-segmental instrumentation (e.g., Harrington rod technique)- Used for stabilizing the spine during extensive spinal procedures. Often performed in conjunction with anesthesia for spinal instrumentation.
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22842: Posterior segmental instrumentation- Involves segmental stabilization of the spine, commonly paired with anesthesia services for complex spinal surgeries.
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63047: Laminectomy, facetectomy and foraminotomy (unilateral or bilateral)- Surgical decompression of the spinal cord or nerve roots. Frequently performed alongside anesthesia for spine procedures.
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22558: Arthrodesis, anterior interbody technique, including minimal discectomy- Fusion of vertebrae using an anterior approach. May require anesthesia services as described by
00670.
- Fusion of vertebrae using an anterior approach. May require anesthesia services as described by
Clinical Workflow:
- These codes are commonly used together during multi-level spinal surgeries requiring extensive instrumentation and decompression. The anesthesia code
00670is billed for the anesthesia services provided during these procedures.
National Reimbursement Benchmarks
National mean rates for CPT code 00670 show that commercial payers such as Aetna, Blue Cross Blue Shield, and Cigna have significantly higher average reimbursement compared to UnitedHealth Group and the BUCA composite. The mean rate for BUCA, representing the average commercial rate, is $390.02, while UnitedHealth Group is notably lower at $65.62. Medicare data is not available in the input for comparison.
Rate dispersion varies widely across payers. Aetna and Cigna exhibit the greatest spread between the 75th and 25th percentiles, with ranges of $1,106.00 and $1,029.67 respectively, indicating substantial variability in contracted rates. In contrast, UnitedHealth Group has the tightest range at $25.44, suggesting more consistent reimbursement levels. Blue Cross Blue Shield also shows a relatively narrow range of $293.75.
The table and chart below present the full breakdown of national mean rates and percentile distributions for each payer.
State Benchmarks
State: AK1 / 50
Alaska Benchmarks
Alaska shows a wide spread in reimbursement rates for CPT code 00670, with Blue Cross Blue Shield offering the highest mean rate at $819.17 and UnitedHealth Group the lowest at $75.12. The rate spread is most pronounced for Blue Cross Blue Shield, where the difference between the 75th and 25th percentiles is $288.06, indicating significant variability in payments. In contrast, Aetna, Cigna, and UnitedHealth Group have minimal rate spreads, with all percentiles clustered closely together.
Compared to national averages, Alaska's mean rates for Blue Cross Blue Shield and BUCA are notably higher, while Cigna and UnitedHealth Group are substantially lower than their respective national means. The table and chart below present the full breakdown of payer-specific rates in Alaska, highlighting these disparities and the overall landscape for CPT code 00670.
Key Insights for Alaska
- Blue Cross Blue Shield is the highest paying payer for CPT 00670 in Alaska, with a mean rate of $819.17.
- UnitedHealth Group offers the lowest mean rate at $75.12, significantly below both the state and national averages.
- Cigna's mean rate in Alaska ($89.33) is much lower than its national mean ($702.06), indicating a substantial deviation.
Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.