Disorders of eyelid, lacrimal system and orbit (H00-H05) ICD-10-CM
The H00–H05 section covers disorders of eyelid, lacrimal system and orbit with 704 ICD-10-CM diagnosis codes, of which 574 are billable in fiscal year 2026. The section is organized into the 5 code ranges listed below.
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Code Ranges in This Section 5 ranges · 704 codes
| Code Range | Title | Codes | Billable |
|---|---|---|---|
| H00 | Hordeolum and chalazion (H00) | 34 | 28 |
| H01 | Other inflammation of eyelid (H01) | 76 | 65 |
| H02 | Other disorders of eyelid (H02) | 303 | 259 |
| H04 | Disorders of lacrimal system (H04) | 158 | 120 |
| H05 | Disorders of orbit (H05) | 133 | 102 |
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the H00–H05 Code Range
ICD-10 codes H00 through H05 cover various conditions affecting the eyelids, lacrimal (tear) system, and orbit, the bony cavity surrounding the eye. These codes are used to classify and document specific disorders ranging from infections, inflammations, structural abnormalities, to degenerative and traumatic conditions.
This range includes codes for eyelid inflammations like hordeolum (styes, both external and internal, such as External hordeolum and Internal hordeolum), chalazion (eyelid cysts), and blepharitis (eyelid margin inflammation). Important synonyms like "Meibomianitis" and "External hordeolum" link directly to codes such as H00.011 (right upper eyelid hordeolum). The chapter also covers other eyelid disorders including entropion (inward eyelid turning), ectropion (outward turning), ptosis (drooping eyelid), and eyelid retraction, with detailed subcodes that specify eyelid location (upper/lower, right/left eye). Terms like "Blepharochalasis" (excess eyelid skin) and "Xanthelasma" (yellowish deposits) have dedicated codes for precise classification.
For the lacrimal system, codes address inflammations such as dacryoadenitis, dry eye syndrome, and various obstructions or abnormalities like stenosis or fistulae. Synonyms including "Tear film insufficiency" and "Dacryolith" help clarify linked codes like H04.12 (dry eye syndrome) and H04.51 (dacryolith). Lastly, orbit disorders covered include orbit inflammations (e.g., orbital cellulitis H05.01), inflammations like orbital myositis, exophthalmos (eye protrusion), enophthalmos (eye sinking), deformities, and retained foreign bodies. This comprehensive code range assists in accurate diagnosis and coding for complex ocular and periocular conditions.
Questions About This Page
How many codes are in the H00-H05 range?
The H00-H05 range contains 704 ICD-10-CM diagnosis codes in FY 2026. 574 of them are billable, and the rest are category headers that organize the section.
What conditions does H00-H05 cover?
The range covers disorders of eyelid, lacrimal system and orbit. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
