ICD-10 Code H01.001 – Unspecified blepharitis right upper eyelid (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H01.001 – Unspecified blepharitis right upper eyelid
What it is
This code identifies blepharitis affecting the right upper eyelid when the record does not specify the type. It indicates eyelid margin inflammation on the right upper lid only.
Clinical signs
Common findings include eyelid redness, irritation, crusting, itching, burning, or a foreign-body sensation. Clinical features vary; refer to documentation for laterality and whether the blepharitis is anterior, posterior, or unspecified.
When to use this code
Use H01.001 when the provider documents blepharitis limited to the right upper eyelid and does not name a more specific type. Choose it for office visits, follow-up care, or problem lists when the diagnosis is clearly recorded.
Confirm that the documentation supports right upper eyelid involvement and does not describe both eyelids or a different eyelid condition. If the note is vague, check documentation before assigning the code.
Do not use for
Do not use this code for blepharitis of another eyelid, both eyelids, or a more specific blepharitis type when documented. Check documentation if the record describes conjunctivitis, chalazion, or another eye disorder instead.
Coding tip
Always verify laterality and eyelid location in the provider note before coding H01.001.