Certified Orthopaedic Surgery Coder (COSC)

Advance your orthopedic coding career with the COSC certification.
Exam

Want to schedule exam?

  • Choose to take the exam online at home with a live remote proctor or at a testing center

  • Purchase an exam voucher to view available dates and times

Starting $325

Training

Need exam prep training?

  • Take our online self-paced instruction course

  • Everything you need to prepare for the COSC exam

Starting at $660

What is a Certified Orthopaedic Surgery Coder?

The COSC credential validates a medical coder’s advanced expertise in orthopaedic surgery coding. Earning the COSC demonstrates proficiency in ICD-10-CM, CPT®, and HCPCS Level II coding specific to musculoskeletal conditions and surgical procedures, in compliance with current guidelines and payer requirements.

This certification is ideal for professional coders working in orthopaedic practices, surgical centers, multispecialty groups, and hospitals where musculoskeletal surgery is performed. COSC-certified coders are equipped to ensure accurate reimbursement, minimize compliance risks, and address the complexities of orthopaedic surgical coding.

Why earn the COSC certification?

  • Stand out with a specialty credential recognized by orthopaedic practices, hospitals, and healthcare organizations

  • Validate your expertise in musculoskeletal anatomy, surgical terminology, and coding for complex orthopaedic procedures

  • Gain a deeper understanding of bundling rules, modifier use, and payer-specific policies for orthopaedic services

  • Position yourself for advanced career opportunities in orthopaedic coding, auditing, and compliance

What does the COSC cover?

The COSC credential proves a coder is skilled in:

Core knowledge areas

  • ICD-10-CM diagnosis coding for musculoskeletal injuries, deformities, degenerative diseases, and traumatic conditions

  • E/M coding for orthopaedic consultations, fracture care, and post-operative management

  • Application of modifiers and payer-specific rules related to orthopaedic surgery

Surgical coding of upper and lower extremities

  • Procedures involving the shoulder, elbow, wrist, hand, hip, knee, ankle, and foot

  • Coding for fracture repairs, dislocations, and reconstructive surgeries

  • Arthroscopic and open surgical procedures of the extremities

Spine and joint procedures

  • Coding for spinal surgeries, including decompressions, fusions, and disc procedures

  • Total joint replacements, revisions, and partial replacements

  • Arthroscopy, injections, and surgical interventions for chronic joint conditions

Casting, splinting, and other orthopaedic services

  • Application and removal of casts, splints, and strapping

  • Injections and aspirations for joints, tendons, and bursae

  • Coding for orthopaedic imaging, diagnostic testing, and ancillary services

Who should earn the COSC?

  • Professional coders working in orthopaedic practices, ambulatory surgical centers, or hospitals specializing in musculoskeletal care

  • Medical billers and reimbursement specialists handling orthopaedic surgery claims

  • Auditors and compliance professionals ensuring accuracy in musculoskeletal coding and documentation

  • Experienced CPC®-certified coders seeking to specialize and advance their careers in orthopaedic surgery coding

Experience Requirements

A high-level knowledge of orthopaedic surgery-related medical terminology, anatomy, and pathophysiology, along with understanding of the proper application of CPT® procedure codes, HCPCS Level II procedure and supply codes, and ICD-10-CM diagnosis codes. 

Not ready yet? We recommend taking our COSC exam preparation course.

Maintaining your certification

To maintain your COSC credential, you must maintain your AAPC annual membership. You must also earn 36 continuing education units (CEUs) every two years, 8 of which must be orthopaedic surgery specific.

Elevate your career with the COSC.

Becoming a COSC-certified medical coder demonstrates your commitment to accuracy, compliance, and excellence in one of the most in-demand specialties. Whether you’re looking to advance your career, specialize in musculoskeletal surgical coding, or improve your organization’s reimbursement accuracy, the COSC is your pathway to professional growth and recognition in orthopaedic surgery coding.

Team training

Looking to certify your team?

AAPC helps employers build stronger revenue cycle teams through industry-recognized training and certifications.

Explore solutions designed for organizations of all sizes, whether you're training new hires, supporting professional development, or upskilling existing staff across your organization.

Healthcare business professionals

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