ICD-10 Code G81.10 – Spastic hemiplegia affecting unspecified side (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G81.10 – Spastic hemiplegia affecting unspecified side
What it is
G81.10 identifies spastic hemiplegia affecting one side of the body when the side is not documented. It describes a persistent upper motor neuron pattern with increased muscle tone and weakness.
Clinical signs
Typical findings include unilateral weakness, stiffness, and reduced voluntary movement on one side. Clinical features vary; refer to documentation for the affected side and any associated gait or limb spasticity.
When to use this code
Use this code when the record clearly documents spastic hemiplegia but does not specify whether the left or right side is affected. It may appear in neurologic follow-up, rehabilitation, or chronic problem lists. If the side is documented, code the more specific hemiplegia code instead.
Do not use for
Do not use it for hemiplegia with a documented left or right side, or when the condition is described as flaccid rather than spastic. Check documentation if the note only states weakness without confirming hemiplegia.
Coding tip
Verify the side in the assessment, exam, or problem list before assigning the unspecified code.