R51.9 – Headache, unspecified

Yes, this ICD-10 code is billable.

You use it when you have confirmed that a patient has a headache, but you have not identified the specific type, its severity, or if it has certain characteristics.

That will depend on the specific headache, the severity, the cause, and its characteristics. But a common treatment for headaches involves resting, sleeping, eating enough food, drinking fluids, and taking pain relievers.