S04.20
BillableInjury of trochlear nerve, unspecified side
S04.20 is the ICD-10-CM code for Injury of trochlear nerve, unspecified side. It is a billable, specific code valid for reimbursement.
S00-T88 Injury, poisoning and certain other consequences of external causes
What this means — in plain language
MedlinePlus · NIHWhen you look at an object, you're using several muscles to move both eyes to focus on it. If you have a problem with the muscles, the eyes don't work properly. There are many kinds of eye movement disorders. Two common ones are: Strabismus - a disorder in which the two eyes don't line up in the same direction. This results in "crossed eyes" or "walleye." Nystagmus - fast, uncontrollable movements of the eyes,…
Read more about Eye Movement Disorders at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Frequently asked questions
- What is ICD-10 code S04.20?
- S04.20 is the ICD-10-CM code for "Injury of trochlear nerve, unspecified side". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
- Is S04.20 a billable code?
- Yes — S04.20 is a billable, specific ICD-10-CM code valid for reimbursement.
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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