In simple words: This surgery relieves pressure on the ulnar nerve in your wrist. The surgeon makes a cut, finds the nerve, and removes any scar tissue or other material causing pressure.Sometimes, the nerve is moved to a better position. This helps restore feeling and movement to your hand and fingers.

This procedure involves surgical decompression or freeing of the ulnar nerve at the wrist from scar tissue or other compressive sources.The surgeon makes an incision, identifies the compressed nerve, and performs external neurolysis, releasing the nerve by removing surrounding scar tissue and soft tissues without entering the nerve itself.Bone spurs or damaged muscle may also be removed if contributing to the compression.If the ulnar nerve is compressed at the ulnar canal (Guyon's canal), nerve transposition may be performed, moving the nerve to a less irritated position. The incision is then closed in layers.

Example 1: A 45-year-old construction worker presents with ulnar nerve entrapment at the wrist due to repetitive strain.The surgeon performs 64719 to release the nerve from compressive scar tissue., A 60-year-old female experiences ulnar nerve compression at Guyon's canal secondary to a ganglion cyst.64719 is performed along with excision of the cyst to decompress the nerve and improve function., A 28-year-old motorcyclist suffers a wrist injury resulting in ulnar nerve damage and compression. 64719 is used to address the nerve compression and restore ulnar nerve function after fracture repair.

Pre-operative diagnosis and imaging (e.g., ultrasound, MRI) demonstrating nerve compression. Detailed operative report including description of procedure, findings, and any complications. Post-operative assessment including sensory and motor function evaluation.

** The specific surgical approach and techniques (e.g., open vs. endoscopic) may influence coding and documentation. Accurate documentation of the procedure performed is critical for appropriate reimbursement.