ICD-10 Code H04.142 – Primary lacrimal gland atrophy, left lacrimal gland (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H04.142 – Primary lacrimal gland atrophy, left lacrimal gland
What it is
This code identifies primary atrophy of the left lacrimal gland, meaning the gland has shrunk or lost function without a documented secondary cause. It is used for the left side only.
Clinical signs
Documentation may note decreased tear production, dry eye symptoms, or visible gland atrophy on exam or imaging. Clinical features vary; refer to documentation.
When to use this code
Use H04.142 when the provider documents primary lacrimal gland atrophy affecting the left lacrimal gland. Code it when the record clearly specifies the left side and does not identify another cause such as trauma, surgery, or systemic disease.
If the note only says lacrimal gland atrophy without laterality, check documentation before assigning a unilateral code. Confirm that the diagnosis is primary, not secondary to another disorder.
Do not use for
Do not use this code for right-sided or bilateral lacrimal gland atrophy, or when the cause is secondary. Check documentation if the record describes nonspecific dry eye without confirmed gland atrophy.
Coding tip
Always verify laterality and whether the atrophy is primary before coding H04.142.