CPT 23420 Shoulder Reconstruction Reimbursement | OpenPayer

Summary & Overview

CPT 23420: Shoulder Reconstruction with Acromioplasty

CPT code 23420 represents a comprehensive surgical shoulder reconstruction for chronic rotator cuff tear or rupture performed with acromioplasty. This code captures an operative approach that addresses both tendon pathology and external impingement by restoring shoulder structures and removing part of the acromion. Nationally, shoulder reconstruction procedures are significant for orthopedic practice patterns, surgical utilization, and payer coverage determinations because they involve major operative care, facility resources, and post-operative rehabilitation.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for when 23420 is reported, the typical surgical setting and service type, and an overview of common billing considerations tied to this category of shoulder surgery. The publication outlines benchmarks and policy-relevant details commonly reviewed by payers and providers, highlights coding relationships that affect reimbursement and claims processing, and summarizes clinical indications that underpin use of the code. Data not available in the input is indicated where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 23420shoulder reconstructionacromioplastyorthopedic surgeryrotator cuffsurgical billingambulatory surgeryhospital outpatient

Billing Code Overview

CPT code 23420 describes reconstruction of the complete shoulder in patients with a chronic rotator cuff tear or rupture, combined with an acromioplasty in which bone is shaved from the underside of the acromion to relieve abnormal pressure on underlying muscles or tendons. The procedure is a surgical shoulder reconstruction with acromioplasty intended to restore shoulder anatomy and reduce impingement associated with chronic rotator cuff pathology.

Service type: Surgical — Orthopedic/Shoulder Reconstruction

Typical site of service: Hospital operating room or ambulatory surgery center (outpatient surgical setting)

Clinical & Coding Specifications

Clinical Context

A 62-year-old right-hand-dominant patient presents with progressive anterosuperior shoulder pain, weakness with overhead activities, and loss of function for >6 months despite conservative care (physical therapy, corticosteroid injection, activity modification). Imaging (MRI) demonstrates a chronic full-thickness rotator cuff tear with tendon retraction and significant subacromial impingement from acromial spurring. The orthopedic surgeon recommends open or arthroscopic-assisted rotator cuff reconstruction with concurrent acromioplasty to decompress the subacromial space and improve tendon healing. The workflow includes preoperative evaluation and medical clearance, operative repair/reconstruction of the rotator cuff (tendon mobilization, suture anchors or graft as indicated), acromioplasty (shaving the undersurface of the acromion), hemostasis, and layered closure. Postoperative plan includes immobilization in a sling, pain control, early passive range of motion per protocol, and scheduled physical therapy. Typical site of service is an outpatient ambulatory surgery center or hospital operating room under general anesthesia with regional block optional. Service type is surgical/operative shoulder reconstruction with subacromial decompression (acromioplasty).

Coding Specifications

Modifier	Description	When to Use
`50`	Bilateral procedure	When procedures are performed on both shoulders during the same operative session.

Related Codes

CPT-23406-SHOULDER-MULTIPLE-TENOTOMY

CPT 23406: Multiple Tenotomy of Shoulder

CPT-23485-CLAVICLE-OSTEOTOMY-BONE-GRAFT-FIXATION

CPT 23485: Clavicle Osteotomy with Bone Graft and Fixation

CPT-23491-PROXIMAL-HUMERUS-FIXATION-IMPLANT-REPAIR

CPT 23491: Proximal Humerus Fixation with Internal Implants

CPT-23397-MULTIPLE-MUSCLE-TRANSFER-SHOULDER-UPPER-ARM-RECONSTRUCTION

CPT 23397: Multiple Muscle Transfer to Shoulder/Upper Arm

CPT-23470-SHOULDER-HEMIARTHROPLASTY-HUMERAL-HEAD-REPLACEMENT

CPT 23470: Shoulder Hemiarthroplasty, Humeral Head Replacement

CPT-23440-BICEPS-TENDON-TENODESIS-SHOULDER-STABILIZATION

CPT 23440: Biceps Tenodesis for Shoulder Stabilization

CPT-23474-SHOULDER-REVISION-ARTHROPLASTY-GLENOID-HUMERAL-REVISION

CPT 23474: Revision Arthroplasty of Shoulder, Glenoid and Humeral Components

CPT-23473-REVISION-SHOULDER-ARTHROPLASTY-PROSTHESIS-EXCHANGE

CPT 23473: Revision Shoulder Arthroplasty with Prosthesis Exchange

CPT-23472-TOTAL-SHOULDER-ARTHROPLASTY

CPT 23472: Total Shoulder Arthroplasty, Humeral Head and Glenoid Replacement

CPT-23480-CLAVICLE-OSTEOTOMY-OPEN-CLAVICULAR-RECONSTRUCTION

CPT 23480: Clavicle Osteotomy or Open Clavicular Reconstruction

Showing 1–10 of 24

Taxonomy Code	Specialty	Notes
`207L00000X`	Orthopaedic Surgery	Primary specialty performing rotator cuff reconstruction and acromioplasty.
`207X00000X`	Sports Medicine (Orthopaedic)	Subspecialists who commonly treat chronic cuff tears and perform surgical reconstruction.
`208000000X`	Physical Medicine & Rehabilitation	May be involved in preoperative optimization and postoperative rehabilitation planning.
`2086S0124X`	Anesthesiology	Provides general anesthesia and regional nerve block services for the operative case.
`206E00000X`	Hand Surgery	Occasionally involved when complex shoulder tendon transfers or extensive reconstructive planning overlap (less common).

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`M75.121`	Complete rotator cuff tear or rupture of right shoulder, not specified as traumatic	Represents chronic full-thickness rotator cuff tear on the right, primary indication for reconstruction.
`M75.122`	Complete rotator cuff tear or rupture of left shoulder, not specified as traumatic	Represents chronic full-thickness rotator cuff tear on the left, primary indication for reconstruction.
`M75.11`	Incomplete rotator cuff tear or rupture of shoulder	Partial-thickness tears that may progress or be treated surgically if conservative care fails.
`M75.41`	Impingement syndrome of shoulder	Subacromial impingement commonly coexists and is addressed with acromioplasty.
`M75.81`	Other shoulder lesions	Used for other shoulder pathologies that may require reconstruction in select cases.
`M75.9`	Shoulder lesion, unspecified	When the exact shoulder pathology is not specified but surgery is performed for shoulder lesion.
`G89.11`	Acute pain due to trauma	May be coded for acute pain management around the time of surgery when relevant.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`29827`	Arthroscopy, shoulder, surgical; rotator cuff repair	Arthroscopic rotator cuff repair is an alternative technique; may be performed instead of or in combination with open reconstruction depending on tear chronicity and surgeon approach.
`23130`	Tenotomy, shoulder; subacromial decompression (acromioplasty), open	Codes related to open acromioplasty; may be reported when acromioplasty is performed in an open approach distinct from arthroscopic methods.
`29826`	Arthroscopy, shoulder, surgical; decompression of subacromial space with coracoacromial ligament (eg, partial acromioplasty) with coracoacromial ligament release	Arthroscopic subacromial decompression is commonly performed with arthroscopic cuff repair as an alternative to open acromioplasty.
`27130`	Arthroplasty, acetabular and proximal femoral prosthetic replacement (total hip arthroplasty)`	Data not available in the input.
`20670`	Arthrocentesis, aspiration and/or injection; major joint or bursa (eg, shoulder)	May be performed preoperatively for diagnostic aspiration or therapeutic steroid injection in the shoulder but typically performed prior to deciding on reconstruction.
`99024`	Postoperative follow-up visit, global period	Represents routine postoperative follow-up during the global surgical period for documentation and billing of postoperative care when not separately billable.