CPT 25447 Interposition Arthroplasty Reimbursement | OpenPayer

Summary & Overview

CPT 25447: Interposition Arthroplasty of Intercarpal or Carpometacarpal Joint

CPT code 25447 reports interposition arthroplasty of intercarpal or carpometacarpal joints, a hand and wrist reconstructive surgery that uses a cushion (often a tendon graft) to restore joint function and reduce pain. This code is relevant nationally for orthopedic and hand surgeons, surgical facilities, and payers managing coverage for complex wrist procedures. It has implications for procedural coding accuracy, utilization review, and postoperative care pathways.

Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise review of the clinical context for interposition arthroplasty, expected sites of service, and typical service classification. The publication also summarizes common payer coverage considerations, coding and billing practice implications, and benchmarks for utilization where available.

This resource helps clinicians, coders, and administrators understand the clinical intent of CPT code 25447, recognize where the procedure is typically performed, and locate relevant policy and billing considerations. Data not available in the input is noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 25447interposition arthroplastyhand surgerywrist arthroplastyorthopedicsambulatory surgeryprocedural codingsurgical coding

Billing Code Overview

CPT code 25447 describes an interposition arthroplasty of an intercarpal or carpometacarpal joint in the wrist. The procedure involves reconstructing the joint and restoring mobility by inserting a cushioning graft, such as a tendon, between the small carpal bones or between carpal and metacarpal bones.

Service type: Surgical — hand/wrist arthroplasty with interposition graft

Typical site of service: Hospital outpatient surgery center or ambulatory surgery center; hospital inpatient when clinically indicated

Clinical & Coding Specifications

Clinical Context

A 62-year-old right-hand–dominant patient presents with chronic, progressive pain and functional limitation localized to the basal joint of the thumb and adjacent intercarpal articulations after years of degenerative osteoarthritis and failed conservative care (splinting, NSAIDs, corticosteroid injection, activity modification). Imaging demonstrates advanced joint space narrowing and subchondral sclerosis of the trapeziometacarpal joint with pain reproducible on examination and unstable carpometacarpal mechanics. The surgeon schedules an operative interposition arthroplasty to restore pain-free range of motion and preserve thumb function by excising the arthritic joint surface and reconstructing an intercarpal or carpometacarpal articulation using a tendon graft or soft-tissue cushion.

Typical clinical workflow:

Preoperative evaluation in clinic with history, focused hand and wrist exam, and plain radiographs confirming arthritic changes.
Pre-op clearance and documentation of informed consent specifying 25447 interposition arthroplasty of intercarpal/carpometacarpal joint using tendon graft.
Operative procedure performed in an ambulatory surgery center or hospital outpatient department under regional block or general anesthesia; intraoperative use of local hemostatic measures and fluoroscopy as needed.
Postoperative hand dressing, brief immobilization in a thumb spica splint, and early hand therapy referral for progressive range of motion and strengthening.
Typical sites of service: Ambulatory surgery center (ASC) or hospital outpatient department for elective hand surgery.

Coding Specifications

CPT 25393: Forearm Osteotomy with Bone Graft Lengthening

CPT-25270-EXTENSOR-TENDON-REPAIR-FOREARM-WRIST-ACUTE

CPT 25270: Repair of Extensor Tendon or Muscle, Forearm or Wrist

CPT-25400-FOREARM-OSTEOTOMY-FOR-NONUNION-MALUNION-RADIUS-ULNA

CPT 25400: Osteotomy and Fixation for Radius or Ulna Nonunion/Malunion

CPT-25448-INTERCARPAL-CARPOMETACARPAL-SUSPENSION-ARTHROPLASTY

CPT 25448: Intercarpal/Carpometacarpal Suspension Arthroplasty

CPT-25446-WRIST-DISTAL-FOREARM-PROSTHETIC-RECONSTRUCTION

CPT 25446: Wrist and Distal Forearm Prosthetic Reconstruction

CPT-25443-SCAPHOID-PROSTHESIS-IMPLANTATION-WRIST

CPT 25443: Scaphoid Prosthesis Implantation, Wrist

CPT-25274-DELAYED-EXTENSOR-TENDON-REPAIR-WITH-AUTOLOGOUS-GRAFT

CPT 25274: Delayed Extensor Tendon/Muscle Repair with Autologous Graft

CPT-25442-DISTAL-ULNA-RESECTION-WITH-IMPLANT-REPLACEMENT

CPT 25442: Distal Ulna Resection with Implant Replacement

CPT-25315-FLEXOR-TENDON-ORIGIN-RELEASE-HAND-WRIST

CPT 25315: Flexor Tendon Origin Release for Hand/Wrist Deformity

CPT-25440-SCAPHOID-NONUNION-REPAIR-WITH-POSSIBLE-STYLOIDECTOMY-BONE-GRAFT

CPT 25440: Scaphoid Nonunion Repair with Possible Styloidectomy and Graft

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Modifier	Description	When to Use
`59`	Distinct Procedural Service	When another unrelated procedure is performed on the same day and documentation supports distinct anatomic site or separate session
`62`	Two Surgeons	When two surgeons work together as primary surgeons performing distinct portions of the procedure
`63`	Procedure Performed on Infants Less Than 4 kg	When procedure is performed on an infant meeting weight criteria (rare for this code)
`66`	Surgical Team (Multiple Surgeons)	When a multidisciplinary surgical team approach is required and documented
`76`	Repeat Procedure by Same Physician	When the same procedure is repeated during the postoperative period (use if applicable)
`77`	Repeat Procedure by Another Physician	When the procedure is repeated by a different physician during the postoperative period
`78`	Return to Operating Room for a Related Procedure During the Postoperative Period	When the patient requires an unplanned return to the OR for a complication related to the original `25447` procedure
`79`	Unrelated Procedure or Service by the Same Physician During the Postoperative Period	When an unrelated procedure is performed during the global period
`52`	Reduced Services	When the service was partially reduced or not completed as planned (e.g., aborted due to intraoperative findings)
`53`	Discontinued Procedure	When the procedure is started but discontinued due to extenuating circumstances or safety concerns
`22`	Increased Procedural Services	When work required is substantially greater than typically required for `25447` and well documented
`51`	Multiple Procedures	When `25447` is reported with additional distinct procedures on the same operative session and payer requires modifier reporting
`RT`	Right Side	To indicate the right-sided procedure when laterality is necessary
`LT`	Left Side	To indicate the left-sided procedure when laterality is necessary

Taxonomy Code	Specialty	Notes
207RH0000X	Orthopedic Hand Surgery	Specialty focusing on surgical care of the hand and wrist; commonly performs interposition arthroplasty
207XS0102X	Orthopedic Surgery	General orthopedic surgeons who perform upper extremity procedures including wrist and thumb arthroplasty
2084P0816X	Plastic and Reconstructive Surgery	Hand surgeons in plastic surgery practice performing tendon graft reconstructions and interposition arthroplasty
363L00000X	Occupational Therapy	Postoperative hand therapists providing rehabilitation (listed as provider type involved in care planning)
2086S0105X	General Surgery (Hand Surgery focus)	Surgeons with a focus on hand procedures in some practice settings

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`M19.04`	Primary osteoarthritis, hand	Degenerative arthritis of the carpometacarpal and intercarpal joints is a primary indication for interposition arthroplasty
`M18.1`	Thumb carpometacarpal (CMC) osteoarthritis, right hand	Specific laterality code commonly linked to `25447` when the right thumb CMC joint is treated
`M18.2`	Thumb carpometacarpal (CMC) osteoarthritis, left hand	Specific laterality code commonly linked to `25447` when the left thumb CMC joint is treated
`M19.06`	Secondary osteoarthritis, hand	Post-traumatic or inflammatory secondary arthritis may necessitate interposition arthroplasty
`M24.2`	Disorder of ligament, hand	Chronic ligamentous instability contributing to joint degeneration and pain that may be addressed during reconstruction
`M65.831`	Trigger finger, right middle finger	Coexisting hand disorders sometimes addressed in the perioperative period when clinically indicated
`M25.519`	Pain in joint, hand	Symptom code that documents pain severity and supports medical necessity for surgical intervention

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`26010`	Tenolysis, flexor tendon; forearm and/or wrist	May be performed if concurrent tendon adhesions are addressed during reconstruction and tendon graft harvest or release is required
`25320`	Excision, tumor or mass, subcutaneous; wrist or hand	Performed when an excision of a mass or synovectomy is necessary in the same surgical field prior to interposition arthroplasty
`25110`	Incision and drainage, deep abscess, or foreign body removal, wrist/hand	Relevant when preexisting infection requires surgical management before or at time of arthroplasty (rare and may alter coding)
`64721`	Neuroplasty and/or transposition; median nerve at carpal tunnel	Performed concurrently when carpal tunnel release or nerve decompression is clinically indicated in the same operative session
`26160`	Arthroplasty, interphalangeal joint; with implant	Separate small-joint arthroplasty codes may be performed on adjacent digits in multijoint reconstructive cases
`26055`	Tenodesis, tendon, with tendon transfer, wrist and/or hand	Performed when tendon transfers are used as part of reconstructive strategy in conjunction with interposition arthroplasty

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