H00.0

Non-Billable
ChapterH00–H59
Ranksubcategory
Official Description

Hordeolum (externum) (internum) of eyelid

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 7: Diseases of the Eye and Adnexa (H00-H59).
General instructions are available for the parent sections:
View CH7 NotesView H00-H05 Notes

Clinical Hierarchy

CH7Diseases of the eye and adnexa (H00-H59)
H00-H05Disorders of eyelid, lacrimal system and orbit (H00-H05)
H00Hordeolum and chalazion
H00.0Hordeolum (externum) (internum) of eyelid
H00.01Hordeolum externum
H00.02Hordeolum internum
H00.03Abscess of eyelid

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to H00.0:

blockH00-H05
Disorders of eyelid, lacrimal system and orbit (H00-H05)
View context instructions
chapterCH7
Diseases of the eye and adnexa (H00-H59)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to H00.0. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

15 raw paths
Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)1 unique routes
eyelid→H00.0
Hordeolum (eyelid) (externum) (recurrent)14 unique routes
Direct index entry→H00.0
internum→H00.0(7 variants)
left→H00.0(3 variants)
lower→H00.0
upper→H00.0
right→H00.0(3 variants)
lower→H00.0
upper→H00.0
left→H00.0(3 variants)
lower→H00.0
upper→H00.0
right→H00.0(3 variants)
lower→H00.0
upper→H00.0

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Hordeolum (externum) (internum) of eyelid.

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