H00.0 – Hordeolum (externum) (internum) of eyelid
ICD-10-CM 2027 diagnosis code · Disorders of eyelid, lacrimal system and orbit
ICD-10-CM code
H00.0
- Code
H00.0(claims format:H000)- Description
- Hordeolum (externum) (internum) of eyelid
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 7. Diseases of the eye and adnexa (H00-H59)
- Block
- H00-H05 Disorders of eyelid, lacrimal system and orbit
- Parent codes
- H00
Billable codes under H00.0
H00.0 is a header code and cannot be used on claims. Choose the most specific code:
- H00.01 – Hordeolum externumHeader (more codes below)
- H00.02 – Hordeolum internumHeader (more codes below)
- H00.03 – Abscess of eyelidHeader (more codes below)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block H00-H05
Related codes in H00
- H00.1 – ChalazionHeader
Frequently asked questions
What is ICD-10 code H00.0?
H00.0 is the ICD-10-CM code for hordeolum (externum) (internum) of eyelid, in the block H00-H05 (Disorders of eyelid, lacrimal system and orbit).
Is H00.0 a billable code?
No. H00.0 is a header code with more specific child codes; report one of the billable codes listed above.
What category does H00.0 belong to?
It belongs to category H00 – Hordeolum and chalazion.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.