Sydra is an AI-powered platform for the No Surprises Act (NSA) Independent Dispute Resolution (IDR) process. It automates eligibility screening, evidence packaging, offer preparation, submission, and deadline tracking so providers, contingency firms, and RCM companies recover fair out-of-network payments.

Healthcare providers and provider groups, contingency firms pursuing out-of-network disputes, and revenue cycle management (RCM) companies that add NSA IDR to their services.

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Both. Sydra offers full-service filing (we file for you), self-service (your team files with the software), or staff training. You can switch models at any time.

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Federal IDR by specialty

Orthopedic surgery: out-of-network denials and recovery

Joint replacement, arthroscopy, and fracture repair codes with high out-of-network exposure for orthopedic groups.

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56 disputed orthopedic surgery codes

Total hip replacement

CPT 27130 · hip

Partial hip replacement (hemiarthroplasty)

CPT 27125 · hip

Conversion to total hip replacement

CPT 27132 · hip

Total knee replacement

CPT 27447 · knee

Partial knee replacement

CPT 27446 · knee

Knee replacement revision, one component

CPT 27486 · knee

Knee replacement revision, femoral and tibial

CPT 27487 · knee

Total shoulder replacement

CPT 23472 · shoulder

Shoulder replacement revision

CPT 23474 · shoulder

Total elbow replacement

CPT 24363 · elbow

Knee arthroscopy with meniscectomy

CPT 29881 · knee

Knee arthroscopy with meniscectomy, both compartments

CPT 29880 · knee

Shoulder arthroscopy with rotator cuff repair

CPT 29827 · shoulder

Shoulder arthroscopy with subacromial decompression

CPT 29826 · add-on · shoulder

Shoulder arthroscopy with capsulorrhaphy

CPT 29806 · shoulder

Arthroscopic ACL reconstruction

CPT 29888 · knee

Knee arthroscopy with chondroplasty

CPT 29877 · knee

Hip fracture repair with replacement or fixation

CPT 27236 · hip

Femur fracture repair with plate or screws

CPT 27244 · hip/femur

Femur fracture repair with intramedullary nail

CPT 27245 · hip/femur

Wrist fracture repair, extra-articular

CPT 25607 · wrist

Wrist fracture repair, intra-articular, two fragments

CPT 25608 · wrist

Wrist fracture repair, intra-articular, three or more fragments

CPT 25609 · wrist

Shoulder fracture repair (proximal humerus)

CPT 23615 · shoulder

Tibia fracture repair with intramedullary nail

CPT 27759 · tibia

Open rotator cuff repair

CPT 23410 · shoulder

Chronic rotator cuff repair, open

CPT 23412 · shoulder

Biceps tendon repair (tenodesis)

CPT 23430 · shoulder

Shoulder arthroscopy with SLAP repair

CPT 29807 · shoulder

Shoulder arthroscopy with distal clavicle excision

CPT 29824 · shoulder

Shoulder arthroscopy with biceps tenodesis

CPT 29828 · shoulder

Knee arthroscopy with meniscus repair, single

CPT 29882 · knee

Knee arthroscopy with meniscus repair, both compartments

CPT 29883 · knee

Knee arthroscopy with microfracture or abrasion

CPT 29879 · knee

Arthroscopic PCL reconstruction

CPT 29889 · knee

Hip arthroscopy with labral repair

CPT 29916 · hip

Hip arthroscopy with femoroplasty

CPT 29914 · hip

Open cruciate ligament repair, knee

CPT 27407 · knee

Removal of knee replacement components

CPT 27488 · knee

Total ankle replacement

CPT 27702 · ankle

Ankle fusion

CPT 27870 · ankle

Ankle fracture repair, bimalleolar

CPT 27814 · ankle

Ankle fracture repair, trimalleolar

CPT 27822 · ankle

Bunion correction with osteotomy

CPT 28296 · foot

Bunion correction with fusion (Lapidus)

CPT 28297 · foot

Humerus shaft fracture repair with plate

CPT 24515 · humerus

Repair of complete shoulder cuff avulsion, chronic

CPT 23420 · shoulder

Lateral retinacular release, open

CPT 27425 · knee

Knee ligament reconstruction, extra-articular

CPT 27427 · knee

Knee ligament reconstruction, intra-articular

CPT 27428 · knee

Tibia shaft fracture repair with plate

CPT 27758 · tibia

Medial malleolus fracture repair

CPT 27766 · ankle

Fibula fracture repair

CPT 27784 · fibula

Metacarpal fracture repair

CPT 26615 · hand

Finger fracture repair, intra-articular

CPT 26746 · hand

Elbow joint resurfacing arthroplasty

CPT 24360 · elbow

Medically & clinically reviewed by Dr. John M. Abrahams, MD

Board-certified neurosurgeon and founder of Sydra · Last reviewed September 2026 · About the author

Sources

Figures reflect the published federal record across all disputes, not a prediction about any individual claim. This is general information, not legal or financial advice.

Orthopedic surgery: out-of-network denials and recovery

56 disputed orthopedic surgery codes

Orthopedic surgery denials by state

Sources