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ICD-10-CM · FY 2026 APRIL UPDATE

H00

Hordeolum and chalazion

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
H00.0Hordeolum (externum) (internum) of eyelidCategory
H00.01Hordeolum externumCategory
H00.011Hordeolum externum right upper eyelidBillable
H00.012Hordeolum externum right lower eyelidBillable
H00.013Hordeolum externum right eye, unspecified eyelidBillable
H00.014Hordeolum externum left upper eyelidBillable
H00.015Hordeolum externum left lower eyelidBillable
H00.016Hordeolum externum left eye, unspecified eyelidBillable
H00.019Hordeolum externum unspecified eye, unspecified eyelidBillable
H00.02Hordeolum internumCategory
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
H00.03Abscess of eyelidCategory
H00.031Abscess of right upper eyelidBillable
H00.032Abscess of right lower eyelidBillable
H00.033Abscess of eyelid right eye, unspecified eyelidBillable
H00.034Abscess of left upper eyelidBillable
H00.035Abscess of left lower eyelidBillable
H00.036Abscess of eyelid left eye, unspecified eyelidBillable
H00.039Abscess of eyelid unspecified eye, unspecified eyelidBillable
H00.1ChalazionCategory
H00.11Chalazion right upper eyelidBillable
H00.12Chalazion right lower eyelidBillable
H00.13Chalazion right eye, unspecified eyelidBillable
H00.14Chalazion left upper eyelidBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.