ICD-10 Code H20.059 – Hypopyon, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H20.059 – Hypopyon, unspecified eye
What it is
Hypopyon means a visible layering of white blood cells or pus in the front chamber of the eye. Use this code when the record identifies hypopyon but does not specify the eye.
Clinical signs
Typical findings include a whitish or yellow fluid level in the anterior chamber, often with eye pain, redness, and blurred vision. Clinical features vary; refer to documentation.
When to use this code
Use H20.059 when the provider documents hypopyon and does not identify whether it is right or left eye. You may also use it when the note confirms hypopyon but laterality is unavailable or unclear. Check documentation for any underlying cause or associated eye disorder.
Do not use for
Do not use this code if the record specifies the right or left eye. Do not use it for other anterior chamber inflammation without documented hypopyon.
Coding tip
Always verify laterality first; if the eye is named, choose the more specific hypopyon code.