ICD-10 Code H21.01 – Hyphema, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H21.01 – Hyphema, right eye
What it is
H21.01 identifies blood in the anterior chamber of the right eye. It usually follows eye trauma, but you should code it only when documentation clearly states hyphema in the right eye.
Clinical signs
Typical findings include visible blood layering in the front of the eye, blurred vision, eye pain, and light sensitivity. Clinical features vary; refer to documentation.
When to use this code
Use H21.01 when the provider documents hyphema limited to the right eye, whether traumatic or otherwise specified in the record. Choose this code for confirmed right-eye anterior chamber bleeding, not for vague redness or unspecified ocular hemorrhage. If the note does not identify laterality, check documentation.
Do not use for
Do not use this code for hyphema of the left eye, bilateral involvement, or unspecified eye. It is also wrong for conjunctival hemorrhage or other eye bleeding without anterior chamber blood.
Coding tip
Always verify laterality and the exact eye structure involved before assigning H21.01.