ICD-10 Code H04.0 – Dacryoadenitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H04.0 – Dacryoadenitis
What it is
Dacryoadenitis is inflammation of the lacrimal gland, which helps produce tears. It may be acute or chronic and can affect one or both eyes.
Clinical signs
Common findings include swelling and tenderness in the outer upper eyelid area, sometimes with redness or pain. Clinical features vary; refer to documentation.
When to use this code
Use H04.0 when the provider documents inflammation of the lacrimal gland or dacryoadenitis. Code it for confirmed cases in outpatient, inpatient, or emergency records. If the note only says eye swelling without a gland diagnosis, check documentation.
Do not use for
Do not use this code for nonspecific conjunctivitis, eyelid infection, or general orbital swelling without lacrimal gland involvement. Check documentation if the site of inflammation is unclear.
Coding tip
Confirm the provider names the lacrimal gland, since eye-area swelling alone is not enough for H04.0.