ICD-10 Code G83.33 – Monoplegia, unspecified affecting right nondominant side (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G83.33 – Monoplegia, unspecified affecting right nondominant side
What it is
G83.33 identifies monoplegia, meaning paralysis or severe weakness affecting one limb only. This code specifies the right nondominant side, but the underlying cause is not further defined.
Clinical signs
Expect marked loss of motor function in one right-sided limb, with reduced voluntary movement and possible abnormal tone. Clinical features vary; refer to documentation.
When to use this code
Use G83.33 when the record clearly documents monoplegia of the right nondominant limb and does not name a more specific cause. It fits cases where laterality and dominance are stated, but the etiology remains unspecified. Check documentation if the chart describes weakness without true paralysis.
Do not use for
Do not use this code for generalized weakness, hemiplegia, or monoplegia affecting a different limb or side. Also avoid it when the provider identifies a specific underlying neurologic diagnosis that should be coded instead.
Coding tip
Confirm both laterality and nondominant-side documentation before assigning G83.33.