What is the description for CPT code 25310?

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Last updated: November 3, 2026 • View editorial policy

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CPT Code 25310 Description

CPT code 25310 describes "Tendon transplantation or transfer, flexor or extensor, forearm and/or wrist, single; each tendon."

This is a surgical procedure code used for billing and documentation when a surgeon performs a tendon transplantation or transfer involving either flexor or extensor tendons in the forearm and/or wrist region, with the code applying to each individual tendon that is transplanted or transferred.

Key Components of CPT 25310

Anatomic Location:

  • Forearm and/or wrist region
  • Does not include hand procedures (which have separate codes)

Procedure Type:

  • Tendon transplantation (moving a tendon from one location to another)
  • Tendon transfer (redirecting a tendon's insertion point)

Tendon Classification:

  • Applies to both flexor tendons (responsible for bending/flexion movements)
  • Applies to extensor tendons (responsible for straightening/extension movements)

Billing Unit:

  • Code is reported per individual tendon
  • Multiple tendon transfers require reporting the code multiple times or using appropriate modifiers

Clinical Context

This procedure is commonly performed for:

  • Restoration of function after nerve injuries (such as radial, median, or ulnar nerve palsies)
  • Correction of tendon ruptures that cannot be primarily repaired
  • Reconstruction following traumatic injuries
  • Treatment of congenital deformities affecting tendon function

Important Coding Considerations

Common Pitfall: The code specifies "single; each tendon" - if multiple tendons are transferred during the same operative session, proper modifier usage (such as -51 for multiple procedures) may be required depending on payer guidelines.

Documentation Requirements: Operative reports must clearly specify which tendon(s) were transferred, the origin and insertion points, and whether the procedure involved flexor or extensor tendons to support accurate coding.

The code has been part of the CPT system for standardizing orthopedic surgical procedures, though like many orthopedic codes, it may benefit from periodic review to ensure work relative value units accurately reflect current surgical complexity and time requirements 1.

References

1
Research

CPT Codes for Pediatric Orthopaedics.

Journal of the Pediatric Orthopaedic Society of North America, 2026

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This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.