CPT 64859 Peripheral Nerve Repair Reimbursement | OpenPayer

Summary & Overview

CPT 64859: Repair of Additional Peripheral Nerves (Add-on)

CPT code 64859 designates an add-on surgical procedure for repair of additional peripheral nerves when multiple nerves require repair due to trauma, lesions, infection, or other causes. As an add-on code, 64859 is reported in conjunction with a primary nerve repair procedure to capture work performed on extra nerves during the same operative session. This coding is important nationally for accurate capture of surgical complexity, resource use, and proper payment when multiple nerve repairs occur.

Key payers covered in this overview include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise description of clinical context and service sites, guidance on how this code functions as an add-on to primary nerve repair procedures, and what to expect in payer coverage patterns. The publication outlines benchmarks and coding practice implications, highlights common modifier usage where relevant, and summarizes any policy or billing considerations that typically affect payment for add-on nerve repair services.

This resource is designed for revenue cycle staff, surgical coders, and clinical administrators seeking a national-level briefing on clinical meaning, billing context, and payer coverage landscape for CPT code 64859.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare64859CPTperipheral-nerve-repairsurgeryadd-on-codenerve-injuryoperative-coding

Billing Code Overview

CPT code 64859 is an add-on procedure code used when a provider repairs damage to additional peripheral nerves beyond the primary nerve repair. The procedure addresses peripheral nerve injury caused by trauma, lesions, infection, or other conditions.

Service type: Surgical repair of peripheral nerves (add-on to primary nerve repair procedure)
Typical site of service: Hospital operating room or ambulatory surgical center, and may also be performed in specialized outpatient surgical clinics

Clinical & Coding Specifications

Clinical Context

A typical patient is a 28-year-old construction worker presenting after a forearm laceration from machinery trauma with progressive numbness, motor weakness, and a Tinel sign over an injured peripheral nerve. Preoperative evaluation includes focused history, neurovascular exam, EMG/NCS when indicated, and imaging to assess soft-tissue injury. The surgeon plans operative exploration and repair of the injured peripheral nerve(s). Intraoperative workflow includes exposure of the wound, identification of the injured nerve segment(s), debridement of nonviable tissue, mobilization to achieve tension-free repair, and primary neurorrhaphy or interposition nerve grafting. When multiple additional peripheral nerves beyond the primary nerve are repaired in the same operative session, the add-on code 64859 is reported for each additional nerve repaired. Typical site of service is an operating room in an acute care hospital or an ambulatory surgery center. Postoperative care includes wound checks, immobilization as indicated, referral for hand therapy or physical therapy, and serial neurologic assessments to document recovery.

Coding Specifications

Modifier	Description	When to Use
`51`	Multiple procedures (note: not in provided list)	Data not available in the input.

CPT 64840: Posterior Tibial Nerve Repair, Suturing

CPT-64865-FACIAL-NERVE-REPAIR-TEMPLE

CPT 64865: Facial Nerve Repair with Possible Graft, Temple Region

CPT-64832-ADDITIONAL-DIGITAL-NERVE-REPAIR-FINGER-TOE

CPT 64832: Repair of Additional Digital Nerve in Finger or Toe

CPT-64858-SCIATIC-NERVE-REPAIR

CPT 64858: Repair of Sciatic Nerve

CPT-64862-LUMBAR-PLEXUS-REPAIR

CPT 64862: Lumbar Plexus Repair

CPT-64872-DELAYED-NERVE-REPAIR-SECONDARY-NERVE-RECONSTRUCTION

CPT 64872: Delayed (Secondary) Peripheral Nerve Repair

CPT-64831-FINGER-TOE-NERVE-REPAIR

CPT 64831: Repair of Nerve in Finger or Toe

CPT-64868-FACIAL-HYPOGLOSSAL-NERVE-ANASTOMOSIS-FACIAL-REANIMATION

CPT 64868: Facial-to-Hypoglossal Nerve Anastomosis for Facial Reanimation

CPT-64856-PERIPHERAL-NERVE-REPAIR-WITH-TRANSPOSITION

CPT 64856: Major Peripheral Nerve Repair with Transposition

CPT-64861-BRACHIAL-PLEXUS-REPAIR-SURGERY

CPT 64861: Brachial Plexus Repair Surgery

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Modifier	Description	When to Use
`22`	Increased procedural services	Use when work or complexity substantially exceeds typical for the procedure and is documented.
`23`	Unusual anesthesia — patient not medically able to tolerate standard anesthesia	Use when the procedure is performed under local or minimal sedation because general anesthesia is contraindicated.
`26`	Professional component	Use when reporting only the professional component of a service (rare for surgical repair codes).
`50`	Bilateral procedure	Use when identical peripheral nerve repairs are performed bilaterally in the same session.
`52`	Reduced services	Use when the procedure is partially reduced or not completed as originally planned.
`53`	Discontinued procedure	Use when the procedure is terminated due to extenuating circumstances or patient safety.
`58`	Staged or related procedure or service by the same physician during the postoperative period	Use when the repair is part of a staged plan and done during the global period as a planned subsequent procedure.
`59`	Distinct procedural service	Use when another procedure is performed at a separate anatomic site or distinct session and must be indicated as distinct from related services.
`62`	Two surgeons	Use when two surgeons work together as primary surgeons performing distinct portions of the repair.
`66`	Surgical team (more than two surgeons)	Use when a surgical team approach is required for extensive or multisite nerve repairs.
`78`	Unplanned return to the operating room for a related procedure during the global period	Use when the patient returns emergently to the OR for a complication related to the nerve repair.
`79`	Unrelated procedure or service during the global period (note: not in provided list)	Data not available in the input.
`LT`	Left side	Use to identify laterality when the left peripheral nerve is repaired.
`RT`	Right side	Use to identify laterality when the right peripheral nerve is repaired.

Taxonomy Code	Specialty	Notes
`207P00000X`	Orthopedic Surgery	Orthopedic hand surgeons commonly perform peripheral nerve repairs in the upper extremity.
`2080P0208X`	Plastic Surgery	Peripheral nerve repairs, especially with grafting or complex soft-tissue reconstruction, are performed by plastic surgeons.
`2084P0800X`	General Surgery	General surgeons may perform peripheral nerve repairs in trauma cases involving extremities or trunk.
`208200000X`	Neurological Surgery	Neurosurgeons perform complex peripheral nerve reconstructions, especially plexus or brachial plexus injuries.
`362.0`	Physical Medicine and Rehabilitation	Rehabilitation specialists manage postoperative therapy and functional recovery (taxonomy code example).

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`S54.12XA`	Laceration of radial nerve at forearm level, initial encounter	Direct traumatic laceration is a common indication for surgical repair of a peripheral nerve.
`S54.11XA`	Laceration of musculocutaneous nerve at forearm level, initial encounter	Injury to another peripheral nerve of the forearm that may require repair; `64859` can be used for additional nerve repairs.
`S64.011A`	Injury of ulnar nerve at forearm level, initial encounter	Ulnar nerve lacerations commonly require primary repair or grafting in traumatic injuries.
`G56.01`	Carpal tunnel syndrome, right upper limb	Although primarily a decompression diagnosis, concurrent or subsequent nerve repair may be needed when trauma or lesions coexist.
`T79.8XXA`	Other complications of trauma, initial encounter	Complications such as neuroma formation or infection can necessitate secondary nerve repair procedures.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`64859`	Repair of additional peripheral nerve; add-on code (each additional nerve)	This is the add-on code used to report each additional peripheral nerve repaired in the same operative session beyond the primary nerve repair.
`64831`	Neuroplasty and/or transposition; median nerve at carpal tunnel	Often performed when nerve decompression is required in conjunction with repair or when carpal tunnel contributes to symptoms in the hand.
`64872`	Repair, peroneal nerve, neuroplasty	Example of primary peripheral nerve repair codes to which an add-on `64859` might be appended when additional nerves are repaired.
`64910`	Repair of peripheral nerve, direct repair with suture (single or multiple)	Primary repair code for a single peripheral nerve; `64859` is appended for each additional nerve repaired.
`69990`	Microsurgical techniques, requiring use of an operating microscope (list separately in addition to code for primary procedure)	Used when operative microscope is required for fine peripheral nerve repair; reported in addition to primary repair and `64859` as applicable.

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