H00: Hordeolum and chalazion
Codes under H00 (Hordeolum and chalazion). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| H00.0 | Hordeolum (externum) (internum) of eyelid | — |
| H00.0 | Hordeolum (externum) (internum) of eyelid | — |
| H00.01 | Hordeolum externum | — |
| H00.01 | Hordeolum externum | — |
| H00.1 | Chalazion | — |
| H00.1 | Chalazion | — |
| H00.02 | Hordeolum internum | — |
| H00.02 | Hordeolum internum | — |
| H00.03 | Abscess of eyelid | — |
| H00.03 | Abscess of eyelid | — |
| H00.011 | Hordeolum externum right upper eyelid | ✓ |
| H00.011 | Hordeolum externum right upper eyelid | ✓ |
| H00.11 | Chalazion right upper eyelid | ✓ |
| H00.11 | Chalazion right upper eyelid | ✓ |
| H00.012 | Hordeolum externum right lower eyelid | ✓ |
| H00.012 | Hordeolum externum right lower eyelid | ✓ |
| H00.12 | Chalazion right lower eyelid | ✓ |
| H00.12 | Chalazion right lower eyelid | ✓ |
| H00.013 | Hordeolum externum right eye, unspecified eyelid | ✓ |
| H00.013 | Hordeolum externum right eye, unspecified eyelid | ✓ |
| H00.13 | Chalazion right eye, unspecified eyelid | ✓ |
| H00.13 | Chalazion right eye, unspecified eyelid | ✓ |
| H00.014 | Hordeolum externum left upper eyelid | ✓ |
| H00.014 | Hordeolum externum left upper eyelid | ✓ |
| H00.14 | Chalazion left upper eyelid | ✓ |
| H00.14 | Chalazion left upper eyelid | ✓ |
| H00.015 | Hordeolum externum left lower eyelid | ✓ |
| H00.015 | Hordeolum externum left lower eyelid | ✓ |
| H00.15 | Chalazion left lower eyelid | ✓ |
| H00.15 | Chalazion left lower eyelid | ✓ |
| H00.016 | Hordeolum externum left eye, unspecified eyelid | ✓ |
| H00.016 | Hordeolum externum left eye, unspecified eyelid | ✓ |
| H00.16 | Chalazion left eye, unspecified eyelid | ✓ |
| H00.16 | Chalazion left eye, unspecified eyelid | ✓ |
| H00.019 | Hordeolum externum unspecified eye, unspecified eyelid | ✓ |
| H00.019 | Hordeolum externum unspecified eye, unspecified eyelid | ✓ |
| H00.19 | Chalazion unspecified eye, unspecified eyelid | ✓ |
| H00.19 | Chalazion unspecified eye, unspecified eyelid | ✓ |
| H00.021 | Hordeolum internum right upper eyelid | ✓ |
| H00.021 | Hordeolum internum right upper eyelid | ✓ |
| H00.022 | Hordeolum internum right lower eyelid | ✓ |
| H00.022 | Hordeolum internum right lower eyelid | ✓ |
| H00.023 | Hordeolum internum right eye, unspecified eyelid | ✓ |
| H00.023 | Hordeolum internum right eye, unspecified eyelid | ✓ |
| H00.024 | Hordeolum internum left upper eyelid | ✓ |
| H00.024 | Hordeolum internum left upper eyelid | ✓ |
| H00.025 | Hordeolum internum left lower eyelid | ✓ |
| H00.025 | Hordeolum internum left lower eyelid | ✓ |
| H00.026 | Hordeolum internum left eye, unspecified eyelid | ✓ |
| H00.026 | Hordeolum internum left eye, unspecified eyelid | ✓ |
| H00.029 | Hordeolum internum unspecified eye, unspecified eyelid | ✓ |
| H00.029 | Hordeolum internum unspecified eye, unspecified eyelid | ✓ |
| H00.031 | Abscess of right upper eyelid | ✓ |
| H00.031 | Abscess of right upper eyelid | ✓ |
| H00.032 | Abscess of right lower eyelid | ✓ |
| H00.032 | Abscess of right lower eyelid | ✓ |
| H00.033 | Abscess of eyelid right eye, unspecified eyelid | ✓ |
| H00.033 | Abscess of eyelid right eye, unspecified eyelid | ✓ |
| H00.034 | Abscess of left upper eyelid | ✓ |
| H00.034 | Abscess of left upper eyelid | ✓ |
| H00.035 | Abscess of left lower eyelid | ✓ |
| H00.035 | Abscess of left lower eyelid | ✓ |
| H00.036 | Abscess of eyelid left eye, unspecified eyelid | ✓ |
| H00.036 | Abscess of eyelid left eye, unspecified eyelid | ✓ |
| H00.039 | Abscess of eyelid unspecified eye, unspecified eyelid | ✓ |
| H00.039 | Abscess of eyelid unspecified eye, unspecified eyelid | ✓ |
Frequently asked questions
What is ICD-10-CM code H00?
H00 is an ICD-10-CM category covering Hordeolum and chalazion. It contains 66 more specific diagnosis codes, 56 of which are billable.
Is H00 a billable code?
No — H00 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example H00.0 — Hordeolum (externum) (internum) of eyelid). 56 of the 66 codes under H00 are billable.
What codes fall under H00?
H00 includes H00.0, H00.0, H00.01, H00.01, H00.1, plus 61 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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