ICD-10 Code G52.3 – Disorders of hypoglossal nerve (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G52.3 – Disorders of hypoglossal nerve
What it is
G52.3 identifies disorders affecting the hypoglossal nerve, the twelfth cranial nerve. This code is used when documentation shows dysfunction, injury, or other disorder of that nerve.
Clinical signs
Clinical features may include tongue weakness, deviation on protrusion, atrophy, or difficulty speaking and swallowing. Clinical features vary; refer to documentation.
When to use this code
Use G52.3 when the provider documents a hypoglossal nerve disorder without a more specific diagnosis. It may apply to unilateral or bilateral nerve involvement, if clearly stated. Code the documented nerve disorder rather than the underlying cause when that is the recorded reason for the encounter.
Do not use for
Do not use this code for general dysphagia, speech problems, or tongue symptoms without documented hypoglossal nerve involvement. Check documentation if the condition is better explained by another cranial nerve disorder or a broader neurologic diagnosis.
Coding tip
Look for explicit mention of the hypoglossal nerve in the assessment, impression, or problem list before assigning G52.3.