H04.333 Acute lacrimal canaliculitis of bilateral lacrimal passages

ICD-10-CM Code H04.333: Acute lacrimal canaliculitis of bilateral lacrimal passages

ICD-10-CM code H04.333 represents acute lacrimal canaliculitis of bilateral lacrimal passages. Public source excerpts from terminology databases, clinical references, and Medicare billing guidance confirm this specific diagnosis label. The available evidence establishes the code description and its placement among other lacrimal passage conditions, but does not provide clinical treatment guidelines or coverage rules. 1 2 3 4

Plain-language overview

Code H04.333 identifies a diagnosis of acute lacrimal canaliculitis affecting bilateral lacrimal passages. This code is listed within ICD-10-CM 2025, providing a specific label for this particular health condition. 1

What this code represents

The official description for ICD-10-CM code H04.333 is acute lacrimal canaliculitis of bilateral lacrimal passages. This exact code and description pairing is confirmed across multiple source excerpts. 1 3

Coding details

Source excerpts list H04.333 alongside distinct codes for acute lacrimal canaliculitis of the right lacrimal passage, the left lacrimal passage, and unspecified lacrimal passages. This establishes separate codes based on laterality. 4

The provided sources list acute lacrimal canaliculitis codes separately from acute dacryocystitis codes. This listing indicates distinct codes exist for these different lacrimal passage conditions. 4

Documentation considerations

A Medicare billing and coding article includes guidance that references acute lacrimal canaliculitis of the right lacrimal passage, code H04.332. This inclusion demonstrates that such specific lacrimal canaliculitis codes appear in operational billing guidance. 2

What the sources add

The EVS Explore terminology source and the American Academy of Ophthalmology clinical reference both explicitly list H04.333 with its full bilateral description. In contrast, the Medicare billing article references the related right-side code H04.332. 1 2 3

A CodeMap DRG listing includes the H04.333 description among a broader array of lacrimal condition labels. This listing features both acute lacrimal canaliculitis and acute dacryoadenitis diagnoses. 4

Sources

1. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-25.
2. Article - Billing and Coding: Ocular Photography - External (A57068) — cms.gov; accessed 2026-07-25.
3. How to Code for Infant Nasal Lacrimal Duct Obstruction — aao.org; accessed 2026-07-25.
4. CodeMap® DRG — codemap.com; accessed 2026-07-25.