H00.01 Hordeolum externum

⚠ Non-Billable ICD-10-CM 2026
Open H00.01 in Web App →

The ICD-10-CM code for Hordeolum externum is H00.01 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
H00-H05: Disorders of eyelid, lacrimal system and orbit (H00-H05)
Category H00
34 codes (28 billable)
FY2026 Status
Stable since FY2024

Inclusion Terms

  • Hordeolum NOS
  • Stye

Official Coding Guidelines

Chapter 7 TOC entry

7. Chapter 7: Diseases of the Eye and Adnexa (H00-H59) ........................................................ 48

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.7
Glaucoma (TOC entry)

a. Glaucoma .............................................................................................................................. 48

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.7.a

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

Parent Code

H00 Hordeolum and chalazion

More Specific Codes

H00.011 Hordeolum externum right upper eyelid H00.012 Hordeolum externum right lower eyelid H00.013 Hordeolum externum right eye, unspecified eyelid H00.014 Hordeolum externum left upper eyelid H00.015 Hordeolum externum left lower eyelid H00.016 Hordeolum externum left eye, unspecified eyelid H00.019 Hordeolum externum unspecified eye, unspecified eyelid

Related Codes in H00

H00 Hordeolum and chalazion H00.0 Hordeolum (externum) (internum) of eyelid H00.011 Hordeolum externum right upper eyelid H00.012 Hordeolum externum right lower eyelid H00.013 Hordeolum externum right eye, unspecified eyelid H00.014 Hordeolum externum left upper eyelid H00.015 Hordeolum externum left lower eyelid H00.016 Hordeolum externum left eye, unspecified eyelid H00.019 Hordeolum externum unspecified eye, unspecified eyelid H00.02 Hordeolum internum H00.021 Hordeolum internum right upper eyelid H00.022 Hordeolum internum right lower eyelid H00.023 Hordeolum internum right eye, unspecified eyelid H00.024 Hordeolum internum left upper eyelid H00.025 Hordeolum internum left lower eyelid H00.026 Hordeolum internum left eye, unspecified eyelid H00.029 Hordeolum internum unspecified eye, unspecified eyelid H00.03 Abscess of eyelid H00.031 Abscess of right upper eyelid H00.032 Abscess of right lower eyelid
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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