2026 ICD-10-CM Diagnosis Code H00Hordeolum and chalazion

ICD-10-CM Codes›H00–H59›H00-H05›H00

ICD-10-CM H00
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H00 is a non-billable ICD-10-CM category code for hordeolum and chalazion, so it cannot be submitted on claims. Use a more specific code from this category instead, such as H00.011, H00.012, H00.013, and H00.014.

Code Identity

ICD-10-CM Code
H00
Billable Status
No — Non-Billable Category
Code Describes
Hordeolum and chalazion
Chapter
H00-H05
Disorders of eyelid, lacrimal system and orbit

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH00-H05Disorders of eyelid, lacrimal system and orbit
CategoryH00Hordeolum and chalazion
This CodeH00Hordeolum and chalazion

Specific Coding for Hordeolum and chalazionOverview

Non-specific codes like H00 require more characters. Use one of these billable codes instead:

  • H00.0 for Hordeolum (externum) (internum) of eyelid

  • H00.01 for Hordeolum externum

  • H00.02 for Hordeolum internum

  • H00.03 for Abscess of eyelid

  • H00.1 for Chalazion

  • Use H00.11 for Chalazion right upper eyelid

  • Use H00.12 for Chalazion right lower eyelid

  • Use H00.13 for Chalazion right eye, unspecified eyelid

  • Use H00.14 for Chalazion left upper eyelid

  • Use H00.15 for Chalazion left lower eyelid

  • Use H00.16 for Chalazion left eye, unspecified eyelid

  • Use H00.19 for Chalazion unspecified eye, unspecified eyelid

Patient EducationClinical

Eyelid Disorders

Your eyelids help protect your eyes. When you blink, your eyelids spread moisture over your eyes. Blinking also helps move dirt or other particles off the surface of the eye. You close your eyelids when you see something coming toward your eyes. This can help protect against injuries.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About H00Overview

Is H00 (Hordeolum and chalazion) a billable code?

No. This is a category header that groups the codes for hordeolum and chalazion, and headers cannot be submitted on claims. Claims for hordeolum and chalazion need a more specific code from this category, such as H00.011, H00.012, and H00.013.