Summary & Overview
CPT 01650: Anesthesia for Knee Arthroscopy Procedures
CPT code 01650 covers anesthesia for arthroscopic procedures on the knee joint, a common intervention in orthopedic surgery. This code is nationally significant due to the prevalence of knee arthroscopy for conditions such as osteoarthritis, meniscal tears, and chronic instability. The code is recognized by major payers including Aetna, Blue Cross Blue Shield, Cigna Health, and UnitedHealthcare, reflecting its widespread use and importance in outpatient hospital settings.
This publication provides a comprehensive overview of CPT code 01650, including payer coverage, clinical context, and relevant billing benchmarks. Readers will gain insight into the typical site of service, associated clinical diagnoses, and related procedural codes. The analysis also highlights key modifiers used in billing, such as QS for monitored anesthesia care and QX for CRNA services with physician direction. Policy updates and coding trends are discussed to inform stakeholders about current practices and compliance requirements. The content is designed to support healthcare professionals, administrators, and policy analysts in understanding the nuances of anesthesia billing for knee arthroscopy procedures.
CPT Code Overview
CPT code 01650 is used to report anesthesia services for procedures performed on the knee joint, specifically arthroscopic interventions. This code falls under the Anesthesiology service type and is most commonly utilized in the Outpatient Hospital setting (Place of Service 22). The code is essential for accurately documenting and billing anesthesia care provided during minimally invasive knee surgeries, ensuring proper reimbursement and compliance with national standards.
Clinical & Coding Specifications
Clinical Context
A typical patient scenario involves an adult presenting to the outpatient hospital with knee pain, instability, or mechanical symptoms such as locking or catching. The patient may have a history of chronic instability, osteoarthritis, or a recent meniscal injury. After clinical evaluation and imaging, the orthopedic surgeon recommends an arthroscopic procedure on the knee joint to address the underlying pathology. An anesthesia provider, such as an anesthesiologist, certified registered nurse anesthetist (CRNA), or anesthesiology assistant, administers anesthesia for the procedure. The workflow includes preoperative assessment, administration of anesthesia, intraoperative monitoring, and postoperative recovery in the outpatient setting.
Coding Specifications
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Modifiers:
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QS: Monitored anesthesia care service. Used when the anesthesia provider delivers monitored anesthesia care during the procedure. -
QX: CRNA service with medical direction by a physician. Used when a CRNA provides anesthesia services under the medical direction of a physician.
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Provider Taxonomies:
Taxonomy Code Specialty Name 207L00000XAnesthesiology 367500000XCertified Registered Nurse Anesthetist (CRNA) 207RA0401XAnesthesiology Assistant
These taxonomies represent the specialties eligible to provide anesthesia services for knee arthroscopy procedures.
Related Diagnoses
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M23.50: Chronic instability of knee, unspecified knee- Indicates ongoing instability of the knee joint, which may necessitate arthroscopic evaluation and treatment.
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M17.11: Unilateral primary osteoarthritis, right knee- Represents degenerative changes in the right knee, often leading to pain and functional impairment requiring arthroscopic intervention.
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M17.12: Unilateral primary osteoarthritis, left knee- Represents degenerative changes in the left knee, which may be managed with arthroscopic procedures.
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S83.241A: Other tear of lateral meniscus, current injury, right knee, initial encounter- Describes an acute meniscal tear in the right knee, commonly treated with arthroscopic surgery.
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S83.242A: Other tear of lateral meniscus, current injury, left knee, initial encounter- Describes an acute meniscal tear in the left knee, often managed with arthroscopic intervention.
Each diagnosis is clinically relevant as it represents conditions frequently addressed by knee arthroscopy, for which anesthesia services are provided and coded with 01650.
Related CPT Codes
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29881: Arthroscopy, knee, surgical; with meniscectomy (medial OR lateral, including any meniscal shaving)- Used when the surgeon performs a meniscectomy on either the medial or lateral meniscus during knee arthroscopy. Commonly paired with anesthesia code
01650.
- Used when the surgeon performs a meniscectomy on either the medial or lateral meniscus during knee arthroscopy. Commonly paired with anesthesia code
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29880: Arthroscopy, knee, surgical; with meniscectomy (medial AND lateral, including any meniscal shaving)- Used when both medial and lateral meniscectomies are performed. Anesthesia code
01650is used for these procedures.
- Used when both medial and lateral meniscectomies are performed. Anesthesia code
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29876: Arthroscopy, knee, surgical; synovectomy, major, 2 or more compartments- Used for major synovectomy involving two or more compartments of the knee. Anesthesia code
01650applies to these procedures.
- Used for major synovectomy involving two or more compartments of the knee. Anesthesia code
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29877: Arthroscopy, knee, surgical; debridement/shaving of articular cartilage (chondroplasty)- Used for debridement or shaving of articular cartilage. Often performed in conjunction with other arthroscopic procedures, with anesthesia code
01650used for the anesthesia service.
- Used for debridement or shaving of articular cartilage. Often performed in conjunction with other arthroscopic procedures, with anesthesia code
These codes represent surgical procedures commonly performed on the knee joint, for which anesthesia services are reported with 01650. They may be used together or as alternatives depending on the clinical findings and surgical plan.
National Reimbursement Benchmarks
National mean rates for CPT code 01650 show that Blue Cross Blue Shield and Cigna have the highest average reimbursement, at $337.04 and $351.90 respectively, while UnitedHealth Group is notably lower at $65.64. The BUCA (average commercial) mean rate stands at $157.38, which is substantially higher than UnitedHealth Group but well below Blue Cross Blue Shield and Cigna. Medicare rates are not available in the input for comparison.
Rate dispersion varies significantly across payers. UnitedHealth Group has the tightest range between the 25th and 75th percentiles ($25.17), indicating less variability in payment rates. In contrast, Cigna and Aetna exhibit the widest dispersions, with Cigna's range at $430.54 and Aetna's at $324.00, reflecting greater variability in their reimbursement levels. The table and chart below present the full breakdown of national benchmarks for each payer.
State Benchmarks
State: AK1 / 50
Alaska Benchmarks
Alaska demonstrates a wide rate spread for CPT code 01650, particularly with Blue Cross Blue Shield, where the difference between the 75th and 25th percentiles is $212.80. Other payers, such as Aetna and UnitedHealth Group, show minimal spread, with all percentile values clustered closely together. This suggests that Blue Cross Blue Shield has more variability in reimbursement, while other payers maintain consistent rates.
Compared to national averages, Alaska's mean rates for Blue Cross Blue Shield and Aetna are substantially higher, while Cigna and UnitedHealth Group are closer to or slightly above national benchmarks. The table and chart below present the full breakdown of payer-specific rates in Alaska.
Key Insights for Alaska
- Blue Cross Blue Shield is the highest paying payer in Alaska for CPT 01650, with a mean rate of $416.19.
- UnitedHealth Group offers the lowest mean rate at $74.78, significantly below both the state and national averages.
- Alaska's mean rates for most payers, especially Blue Cross Blue Shield, are notably higher than national benchmarks, indicating a substantial regional premium.
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