ICD-10 Code G56.02 – Carpal Tunnel Syndrome, Left Upper Limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G56.02 – Carpal tunnel syndrome, left upper limb
What it is
G56.02 identifies compression of the median nerve at the left wrist. Use it when the record specifically documents carpal tunnel syndrome affecting the left upper limb.
Clinical signs
Typical findings include numbness, tingling, pain, or weakness in the median nerve distribution of the left hand. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider clearly states left-sided carpal tunnel syndrome or median nerve compression at the left wrist. It may also fit follow-up visits when the diagnosis remains active and is still being managed. Check documentation if laterality is not explicit.
Do not use for
Do not use it for right-sided or bilateral carpal tunnel syndrome, or for nonspecific hand numbness without a confirmed diagnosis. Check documentation for the correct laterality and condition.
Coding tip
Always confirm left laterality in the assessment or impression before assigning G56.02.