CPT 01620: Anesthesia for Closed Shoulder and Related Joint Procedures
CPT code 01620 denotes anesthesia services for closed procedures on the humeral head and neck, sternoclavicular, acromioclavicular, and shoulder joints. This code is used when an anesthesia professional provides perioperative anesthetic care for patients undergoing non-open interventions in the shoulder region. Nationally, accurate use of this code affects anesthesia billing, resource allocation in surgical settings, and procedural cost accounting for shoulder-related orthopaedic care.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication summarizes payer coverage patterns, relevant billing considerations, and clinical context for cases where closed shoulder and related joint procedures are performed under anesthesia.
Readers will learn the clinical scope of CPT code 01620, typical sites of service, common associated procedure contexts, and how this code relates to other anesthesia and orthopaedic procedure codes. The report also highlights common documentation and coding themes that affect claims processing and payer adjudication. Data not available in the input is noted where applicable; the focus remains on national applicability rather than state-specific policy.
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Billing Code Overview
CPT code 01620 describes anesthesia services provided for closed procedures involving the humeral head and neck, sternoclavicular, acromioclavicular, and shoulder joints. The service includes administration and management of anesthesia care for patients undergoing closed (non-open) procedures on these shoulder-related joints.
Service Type: Anesthesia for closed shoulder and related joint procedures
Typical Site of Service: Operating room or procedure suite for outpatient or inpatient surgical procedures involving the shoulder, clavicular, or sternoclavicular joints
Clinical & Coding Specifications
Clinical Context
A 62-year-old patient with chronic right shoulder pain and limited range of motion due to degenerative changes is scheduled for a closed (nonopen) procedure on the shoulder joint, such as closed reduction of a shoulder dislocation or closed manipulation of the humeral head/neck under anesthesia. The patient has a history of knee osteoarthritis but presents for an acute shoulder event requiring procedural anesthesia. The perioperative workflow includes pre-anesthesia evaluation in the preoperative area, confirmation of fasting status and medications, airway assessment, and informed consent for monitored anesthesia care or general anesthesia. In the operating room or procedure suite the anesthesia team (anesthesiologist, CRNA, or anesthesiology assistant) provides induction, maintenance, monitoring of vital signs, and peri-procedural analgesia. After the closed shoulder procedure, the patient is transferred to the post-anesthesia care unit for recovery and discharge planning or admission based on comorbidities and anesthetic recovery.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
23 | Unusual anesthesia | Use when emergency or medically necessary anesthesia is provided for a procedure normally not requiring anesthesia. |
50 | Bilateral procedure | Use when identical closed procedures are performed on both shoulder joints during the same anesthetic. |
52 | Reduced services | Use when the planned anesthetic is partially reduced or not completed as expected. |
53 | Discontinued procedure | Use when the anesthesia is provided but the procedure is terminated for medical reasons. |
54 | Surgical care only | Rare for anesthesia billing; indicates surgeon retains postoperative care (included here for team coding contexts). |
55 | Postoperative management only | Use if anesthesia provider only provides postoperative management (rare for this code). |
62 | Two surgeons | Use when two qualified anesthesia providers share care legitimately (applies analogously when two surgical teams require distinct anesthesia documentation). |
78 | Return to OR for related procedure following initial anesthesia | Use if patient returned to the OR during the same global period for a related shoulder procedure requiring additional anesthesia. |
AA | Anesthesia by anesthesiologist | Use to indicate services personally performed by a physician anesthesiologist. |
QK | Medical direction of two or more CRNAs/Anesthesiologist assistant by physician | Use when the physician medically directs multiple CRNAs/AAs for this case. |
QS | Monitored anesthesia care (MAC) service | Use when the service provided is MAC for the closed shoulder procedure. |
AD | Medical supervision by a physician: more than four concurrent anesthesia procedures | Use when physician is supervising >4 concurrent anesthesia procedures. |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
207L00000X | Anesthesiology | Physician specialty billing anesthesia services for perioperative care. |
367500000X | Certified Registered Nurse Anesthetist | CRNAs commonly provide anesthesia for closed shoulder procedures, often under supervision or medical direction. |
207RA0401X | Anesthesiology Assistant | Anesthesiology assistants support delivery of anesthesia under physician supervision. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
M17.11 | Unilateral primary osteoarthritis, right knee | Patient comorbidity; may appear on the problem list but is not the indication for the shoulder closed procedure. |
M17.12 | Unilateral primary osteoarthritis, left knee | As above for the contralateral knee; documents degenerative joint disease elsewhere. |
S83.241A | Sprain of medial collateral ligament of right knee, initial encounter | Knee ligament sprain diagnosis on the chart; relevant to overall surgical history and perioperative risk assessment. |
S83.242A | Sprain of medial collateral ligament of left knee, initial encounter | Contralateral knee ligament sprain; documents recent musculoskeletal injury. |
M23.50 | Chronic instability of knee, unspecified knee | Chronic knee instability as a comorbidity; may affect mobility and perioperative planning (e.g., DVT risk, positioning). |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
01400 | Anesthesia for open or surgical arthroscopic procedures on knee joint | Related anesthesia code for knee arthroscopy; included for cross-specialty billing comparisons when multiple joint procedures occur. |
29881 | Arthroscopy, knee, surgical; with meniscectomy (medial OR lateral, including any meniscal shaving) | Example operative code for knee arthroscopy that may appear in the same patient record (patient has knee OA) but not directly for shoulder procedure. |
29888 | Arthroscopically aided anterior cruciate ligament repair/augmentation or reconstruction | Another knee arthroscopy surgical code referenced for related procedural scheduling or concurrent care considerations. |
20610 | Arthrocentesis, aspiration and/or injection into a major joint or bursa | May be performed in the clinic or procedure suite with local anesthesia or sedation; represents a less-invasive joint procedure alternative to closed manipulation. |