ICD-10 Code G81.12 – Spastic Hemiplegia Affecting Left Dominant Side (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G81.12 – Spastic hemiplegia affecting left dominant side
What it is
G81.12 identifies spastic weakness or paralysis affecting the left dominant side of the body. Use it when the hemiplegia is documented as spastic and the left side is the dominant side.
Clinical signs
Typical findings include increased muscle tone, stiffness, and impaired voluntary movement on the left dominant side. Clinical features vary; refer to documentation for laterality, dominance, and whether the hemiplegia is spastic.
When to use this code
Use this code when the provider documents spastic hemiplegia with left-side involvement and notes that the affected side is dominant. It is appropriate for current diagnoses and for follow-up visits when the condition remains active. Check documentation if dominance is not specified.
Do not use for
Do not use this code for nonspastic hemiplegia, generalized weakness, or hemiparesis without documented spasticity. Do not assign it if the left side is not the dominant side or if the record is unclear.
Coding tip
Verify both laterality and dominance in the note before assigning G81.12.