ICD-10 Code G83.23 – Monoplegia of upper limb affecting right nondominant side (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G83.23 – Monoplegia of upper limb affecting right nondominant side
What it is
G83.23 identifies paralysis limited to the right upper limb when that side is the nondominant side. Use it when documentation specifies monoplegia rather than weakness or generalized paralysis.
Clinical signs
Typical findings include marked loss of voluntary movement in one upper limb, with the rest of the body relatively spared. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly states monoplegia of the right upper extremity and identifies the affected side as nondominant. It fits neurologic deficits documented as paralysis of one arm only. If dominance is not stated, check documentation before coding.
Do not use for
Do not use it for generalized hemiplegia, paraplegia, or simple limb weakness without paralysis. Do not assume dominance; if the chart does not specify right nondominant side, check documentation.
Coding tip
Confirm both laterality and dominance in the provider note before assigning G83.23.