ICD-10-CM · Chapter 7 · H00–H59
H00.01
Hordeolum externum
Diseases of the eye and adnexa
Heads up:this is a parent code. It's typically not directly billable — you need to drill down to a more specific child code (one with additional digits) to use on a claim.
Quick facts
- Code
- H00.01
- Type
- Category / header (non-billable)
- ICD-10-CM chapter
- Chapter 7 — Diseases of the eye and adnexa
- Category
- H00 — Hordeolum and chalazion
- Specificity
- 5 characters
How coders use this code
ICD-10-CM H00.01 is a category (header) for hordeolum externum. It is generally not reported directly on a claim — coders drill down to a more specific child code (one with additional characters) that matches the documentation. Use the related codes below to find the billable code that fits, and verify against the annual NCHS/CMS guidelines.
Related codes in H00
- H00Hordeolum and chalazion
- H00.0Hordeolum (externum) (internum) of eyelid
- H00.011Hordeolum externum right upper eyelid
- H00.012Hordeolum externum right lower eyelid
- H00.013Hordeolum externum right eye, unspecified eyelid
- H00.014Hordeolum externum left upper eyelid
- H00.015Hordeolum externum left lower eyelid
- H00.016Hordeolum externum left eye, unspecified eyelid
- H00.019Hordeolum externum unspecified eye, unspecified eyelid
- H00.02Hordeolum internum
- H00.021Hordeolum internum right upper eyelid
- H00.022Hordeolum internum right lower eyelid
- H00.023Hordeolum internum right eye, unspecified eyelid
- H00.024Hordeolum internum left upper eyelid
- H00.025Hordeolum internum left lower eyelid
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