CPT 26645 Closed Thumb Manipulation Reimbursement | OpenPayer

Summary & Overview

CPT 26645: Closed Manipulation of Thumb-Base Fracture

CPT code 26645 represents a closed manipulation of a displaced fracture at the base of the thumb near the wrist, a non‑operative procedure to restore joint alignment without incision. This procedure matters nationally because thumb base fractures can impact hand function and workforce participation; timely, effective closed reduction can reduce the need for open surgery and influence downstream costs and recovery trajectories. Key payers considered in national analyses include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will learn the clinical context of CPT code 26645, typical sites of service (emergency department, outpatient clinic, ambulatory surgical center), and the role of closed manipulation in the care pathway for thumb base fractures. The publication provides benchmarking context, common billing considerations, and policy-relevant highlights that affect coverage and utilization. Practical insights include expected service settings, how this code fits into fracture management workflows, and areas where coding clarity and policy updates may affect claims processing. Data not available in the input will be explicitly noted in relevant sections.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 26645thumb fractureclosed reductionorthopedicshand surgeryemergency careambulatory surgical centerfracture managementprocedure coding

Billing Code Overview

CPT code 26645 describes a closed manipulation of a displaced fracture at the base of the thumb near the wrist (the carpometacarpal or adjacent joint) performed to restore alignment without making an incision. The procedure is a non‑operative fracture reduction using manual techniques to realign bone fragments.

Service type: Closed fracture manipulation (non‑surgical fracture reduction)
Typical site of service: Emergency department, ambulatory surgical center, or outpatient clinic where urgent musculoskeletal reductions and splinting are performed.

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A 44-year-old manual laborer presents to the emergency department after a fall onto an outstretched hand. He reports immediate thumb base pain, swelling, and decreased range of motion at the carpometacarpal (CMC) joint of the thumb. Imaging (plain radiographs and/or CT) demonstrates a displaced intra-articular fracture at the base of the first metacarpal involving the CMC joint. The on-call orthopedic or hand surgery provider performs a closed manipulation and reduction of the displaced fracture without incision, under regional block or monitored anesthesia care, to restore anatomic alignment. Fluoroscopic guidance is used to confirm reduction. Post-reduction immobilization with a thumb spica cast or splint is applied. The patient is observed for neurovascular status, given discharge instructions, and scheduled for follow-up radiographs and hand surgery clinic visit to determine need for operative fixation if reduction is unstable.

Coding Specifications

Modifier	Description	When to Use
`25`	Data not provided in the input.	Data not available in the input.
`52`	Reduced services.	Use when the manipulation is attempted but incomplete or discontinued, resulting in a reduced scope of service compared with full closed reduction.

CPT 26735: Open Treatment of Phalangeal Shaft Fracture

CPT-26706-MCP-DISLOCATION-MANIPULATION-INTERNAL-FIXATION

CPT 26706: Metacarpophalangeal Dislocation Manipulation with Internal Fixation

CPT-26675-CLOSED-REDUCTION-WRIST-HAND-JOINT

CPT 26675: Closed Reduction of Displaced Wrist-Hand Joint

CPT-26785-OPEN-TREATMENT-INTERPHALANGEAL-JOINT-DISLOCATION

CPT 26785: Open Treatment of Single Interphalangeal Joint Dislocation

CPT-26720-CLOSED-TREATMENT-PHALANGEAL-SHAFT-FRACTURE

CPT 26720: Closed Treatment of Phalangeal Shaft Fracture

CPT-26765-OPEN-TREATMENT-DISTAL-PHALANGEAL-FRACTURE

CPT 26765: Open Treatment of Distal Phalangeal Fracture

CPT-26725-PHALANGEAL-SHAFT-FRACTURE-CLOSED-TREATMENT-REDUCTION

CPT 26725: Closed Treatment of Phalangeal Shaft Fracture

CPT-26756-DISTAL-PHALANGEAL-FRACTURE-PERCUTANEOUS-FIXATION

CPT 26756: Distal Phalangeal Fracture Fixation, Percutaneous

CPT-26770-CLOSED-REDUCTION-INTERPHALANGEAL-DISLOCATION-NO-ANESTHESIA

CPT 26770: Closed Reduction of Single Interphalangeal Joint Dislocation

CPT-26742-CLOSED-TREATMENT-ARTICULAR-FRACTURE-MCP-IP-JOINT

CPT 26742: Closed Treatment of Articular Finger Fracture (MCP/IP Joint)

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Taxonomy Code	Specialty	Notes
207K00000X	Orthopedic Surgery	Primary specialty performing closed manipulations of hand fractures.
207MS0101X	Hand Surgery	Subspecialty focusing on hand and upper extremity fracture management.
2080P0206X	Emergency Medicine	Often performs initial closed reduction in the ED setting under procedural sedation or local/regional anesthesia.
261QM0800X	Physical Medicine & Rehabilitation	Provides post-reduction rehabilitation and splinting guidance.
363A00000X	Anesthesiology	Provides regional blocks or sedation for manipulation procedures.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`S62.231A`	Displaced fracture of base of first metacarpal bone, right hand, initial encounter for closed fracture	Directly describes the displaced thumb-base fracture typically treated with closed manipulation (`26645`).
`S62.232A`	Displaced fracture of base of first metacarpal bone, left hand, initial encounter for closed fracture	Left-sided equivalent for coding laterality when procedure performed on the left thumb.
`S62.239A`	Unspecified fracture of base of first metacarpal bone, initial encounter for closed fracture	Use when documentation does not clearly state displacement or specific classification but closed management performed.
`S62.291A`	Other fracture of first metacarpal bone, right hand, initial encounter for closed fracture	Captures less common fracture patterns at the thumb base where closed manipulation is indicated.
`S62.292A`	Other fracture of first metacarpal bone, left hand, initial encounter for closed fracture	Left-hand counterpart for varied first metacarpal fracture patterns.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`25605`	Closed treatment of radial styloid fracture (e.g., Colles type) with manipulation, without anesthesia by the surgeon.	Similar closed manipulation technique for distal radius fractures; may be used when additional upper-extremity fractures are present or when coordinating reductions.
`24505`	Closed treatment of humeral shaft fracture; without manipulation.	Example of closed fracture management codes for upper extremity; not specific to thumb but represents nonoperative fracture care in the workflow.
`20690`	Application, on sustained basis, of external fixation system.	May follow closed reduction if temporary external stabilization is required for complex thumb base injuries.
`29075`	Application of short arm cast (forearm to hand); static.	Often performed immediately after closed reduction to immobilize the thumb and wrist in a thumb spica configuration.
`26010`	Fasciotomy, hand or finger.	Rarely related; included as a potential next-step if compartment syndrome or soft-tissue complications occur after injury.

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