ICD-10-CM 2027 diagnosis code
H00.02Hordeolum internum
H00.02 is a header code, so it can't be reported by itself. Choose one of the 7 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About H00.02
H00.02 is the ICD-10-CM diagnosis code for Hordeolum internum. It belongs to category H00 (Hordeolum and chalazion), block H00-H05 (disorders of eyelid, lacrimal system and orbit) and chapter 7 (diseases of the eye and adnexa). It is a header code, so it can't be reported by itself; one of its 7 subcodes must be used instead.
Within H00.0 (Hordeolum (externum) (internum) of eyelid), H00.02 is specifically for Hordeolum internum. Related codes cover Hordeolum externum (H00.01) and abscess of eyelid (H00.03).
To report this condition, pick the subcode that matches the documentation: H00.021 (right upper eyelid), H00.022 (right lower eyelid), H00.023 (right eye, unspecified eyelid), H00.024 (left upper eyelid), H00.025 (left lower eyelid), H00.026 (left eye, unspecified eyelid) and H00.029 (unspecified eye, unspecified eyelid).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under H00.02
- H00.021Hordeolum internum right upper eyelidBillable
- H00.022Hordeolum internum right lower eyelidBillable
- H00.023Hordeolum internum right eye, unspecified eyelidBillable
- H00.024Hordeolum internum left upper eyelidBillable
- H00.025Hordeolum internum left lower eyelidBillable
- H00.026Hordeolum internum left eye, unspecified eyelidBillable
- H00.029Hordeolum internum unspecified eye, unspecified eyelidBillable
Coding notes
- Infection of meibomian gland
Notes that apply from higher levels
Instructions written at a parent level also apply to H00.02.
Broader instructions also apply from H00-H05 Disorders of eyelid, lacrimal system and orbit and Chapter 7: Diseases of the eye and adnexa.
Codes whose notes reference H00.02
- H00.1Excludes2
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about H00.02
Is H00.02 billable?
- No. H00.02 is a header code. Report one of its more specific subcodes instead.