Summary & Overview

CPT 23616: Open Treatment of Proximal Humerus Neck Fracture

CPT code 23616 identifies an open surgical procedure for treatment of fractures of the surgical or anatomical neck of the proximal humerus. The code covers a spectrum of operative care from fracture reduction and internal fixation with pins or screws to repair of the tubercles and, when necessary, prosthetic replacement of the humeral head. This procedure is central to management of displaced proximal humerus fractures that cannot be reliably treated with closed methods and has implications for orthopedic surgical throughput, resource use, and post-operative rehabilitation nationally.

Key payers addressed in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a clinical and billing-focused overview that situates CPT code 23616 within surgical service lines, typical sites of service, and payer coverage considerations. The publication outlines benchmark payment and utilization themes, common coding and billing considerations, and relevant policy updates affecting coverage and site-of-service determinations. Clinicians, billers, and policy analysts will gain a concise understanding of when CPT code 23616 applies, how it differs from less invasive fracture treatments, and which operational and reimbursement factors commonly influence its use across major national payers.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 23616proximal humerus fractureopen fracture treatmentorthopedic surgeryshoulder fracture repairoperative fixationhumeral head replacementsurgical codingtrauma surgery

Billing Code Overview

CPT code 23616 describes the open treatment of a surgical or anatomical neck fracture of the proximal humerus. The procedure includes exposure and reduction of the fracture, and may involve fixation with implants such as pins or screws, repair of the greater or lesser tubercles, or prosthetic replacement of the humeral head when indicated.

Service Type: Surgical — Orthopedic trauma repair

Typical Site of Service: Inpatient or outpatient hospital operating room, ambulatory surgical center, depending on clinical stability and the need for fixation or prosthetic replacement.

Clinical & Coding Specifications

Clinical Context

A 68-year-old right-hand–dominant female presents to the emergency department after a ground-level fall onto her outstretched left arm. She reports immediate shoulder pain, swelling, and inability to raise the arm. Plain radiographs and CT confirm a displaced surgical-neck fracture of the proximal humerus with comminution and involvement of the humeral head. The orthopedic trauma surgeon evaluates the patient, obtains medical clearance, and schedules an open reduction and internal fixation with possible prosthetic replacement of the humeral head.

Preoperative workflow includes history and physical, review of imaging, informed consent documenting risks (infection, neurovascular injury, nonunion, stiffness), and anesthesia evaluation for general or regional block. Intraoperative steps involve open exposure of the fracture site, debridement, reduction of the surgical neck fragments, optional fixation with plates, screws, or pins, repair of tuberosities as indicated, and possible hemiarthroplasty if the humeral head is non-reconstructable. Postoperative care includes pain control, neurovascular checks, immobilization in a sling, initiation of early passive and then active-assisted range-of-motion under physical therapy guidance, and follow-up radiographs to monitor healing.

Coding Specifications

Modifier	Description	When to Use
`00`	Service not specified in this context (placeholder)	Not typically reported; included in source list but not commonly used for this procedure.
`11`	Office or other outpatient visit for the evaluation and management service	Use when an unrelated E/M visit is billed by the same provider on the same date (rare for operative code billing).
`22`	Increased procedural services	Use when services are substantially greater than typically required (unusual complexity, extensive dissection).
`23`	Unusual anesthesia	Use when medically necessary anesthesia is required for the procedure beyond standard expectations.
`26`	Professional component	Use when reporting only the professional component of a global service (rare for operative codes billed separately from facility).
`50`	Bilateral procedure	Use when identical procedures are performed on both humeri during the same operative session.
`51`	Multiple procedures	Use when other distinct procedures are performed during the same operative session in addition to the open treatment of the surgical neck.
`52`	Reduced services	Use when the service is partially reduced or not completed as originally planned.
`53`	Discontinued procedure	Use when the procedure is started but terminated due to extenuating circumstances or patient instability.
`62`	Two surgeons	Use when two surgeons work together as primary surgeons performing distinct portions of the procedure.
`63`	Procedure performed on infants less than 4 kg	Not typical for this adult fracture repair but included for completeness.
`66`	Surgical team approach	Use when a surgical team approach is reported (complex orthopedic reconstruction requiring multiple team members).
`78`	Return to operating room for a related procedure during the postoperative period	Use when the patient requires a revision operative procedure related to the healing of the initial fracture.
`79`	Unrelated procedure or service by the same physician during the postoperative period	Use when an unrelated procedure is performed during the global period.

Taxonomy Code	Specialty	Notes
207X00000X	Orthopaedic Surgery	Primary specialty performing open treatment of proximal humerus fractures.
2084P0800X	Orthopedic Trauma Surgery	Subspecialty focused on complex fracture care and trauma reconstruction.
208600000X	Hand Surgery	May be involved when complex distal tuberosity or proximal humerus-tuberosity relationships affect shoulder function.
207L00000X	Sports Medicine (Orthopaedic)	Performs proximal humerus fracture care in active patients; manages postoperative rehabilitation.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`S42.231A`	Displaced fracture of surgical neck of left humerus, initial encounter for closed fracture	Direct diagnosis indicating a displaced surgical-neck proximal humerus fracture on the left; classic indication for open reduction/internal fixation or possible arthroplasty.
`S42.232A`	Displaced fracture of surgical neck of right humerus, initial encounter for closed fracture	Same as above for the right side.
`S42.201A`	Unspecified fracture of surgical neck of humerus, initial encounter for closed fracture	Used when fracture details are not yet fully characterized; may be refined after imaging.
`S42.241A`	Fracture of greater tuberosity of humerus, initial encounter for closed fracture	Tuberosity involvement commonly coexists and requires repair during open treatment to restore rotator cuff function.
`S42.251A`	Fracture of lesser tuberosity of humerus, initial encounter for closed fracture	Lesser tuberosity fractures may be addressed during the same operation to restore subscapularis attachment.
`M84.351A`	Pathological fracture, humerus, initial encounter for fracture	Indicates fracture through weakened bone; alters surgical planning and consideration of prosthetic replacement.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`23600`	Closed treatment of proximal humeral (surgical or anatomical neck) fracture; without manipulation	May be performed prior to deciding on open treatment or attempted as initial closed management for less displaced fractures.
`23605`	Closed treatment of proximal humeral (surgical or anatomical neck) fracture; with manipulation	Alternative to open treatment when closed reduction is feasible.
`23630`	Open treatment of proximal humeral fracture, includes internal fixation, with or without prosthetic replacement; more extensive proximal humerus procedures	Related open proximal humerus fixation procedures; used for other proximal humerus fracture patterns.
`23472`	Arthroplasty, glenohumeral joint; hemiarthroplasty (e.g., replacement of humeral head)	Used when the humeral head is replaced rather than internally fixed; may be billed when prosthetic replacement is performed.
`29826`	Arthroscopy, shoulder, surgical; decompression of subacromial space with partial acromioplasty	May be performed concurrently for associated impingement or to address concomitant intra-articular pathology via arthroscopic assistance.