H00.0 ICD-10-CA code: Hordeolum and other deep inflammation of eyelid
H00.0 is the ICD-10-CA code for “Hordeolum and other deep inflammation of eyelid” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
H00.0Hordeolum and other deep inflammation of eyelid
Short description: Hordeolum & other deep inflam of eyelid
ICD-10-CA · Canada · Also written H000
Index terms
Entries in CIHI’s alphabetical index that lead to H00.0. Searching the index by the condition the note names is how coders reach this code.
- Meibomitis
- Boil, eyelid
- Furuncle, eyelid
- Carbuncle, eyelid
- Meibomian, sty, stye
- Meibomian, cyst, infected
- Steatoma, eyelid (cystic), infected
- Cellulitis (diffuse) (with lymphangitis), eyelid
- Infection, infected (opportunistic), Zeis' gland
- Hordeolum (eyelid) (external) (internal) (recurrent)
- Sty, stye (external) (internal) (meibomian) (zeisian)
- Infection, infected (opportunistic), meibomian cyst or gland
- Cyst (colloid) (mucous) (retention) (simple), meibomian (gland), infected
- Cyst (colloid) (mucous) (retention) (simple), eyelid (sebaceous), infected
- Abscess (embolic) (infective) (metastatic) (multiple) (pyogenic) (septic), eyelid
- Abscess (embolic) (infective) (metastatic) (multiple) (pyogenic) (septic), meibomian gland
Notes for H00.0
As CIHI prints them, with any note H00.0 takes from the headings above it.
Includes
- Abscess, Furuncle, Stye of eyelid
Excludes
Conditions classified elsewhere.
- Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 7: Diseases of the eye and adnexa (H00-H59)
Where H00.0 sits
- 1ChapterChapter 7: Diseases of the eye and adnexa (H00-H59)
- 2Block H00-H06Disorders of eyelid, lacrimal system and orbit
- 3Category H00Hordeolum and chalazion
- 4Valid code H00.0Hordeolum and other deep inflammation of eyelid
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code H00.0 mean?
H00.0 is the ICD-10-CA code for “Hordeolum and other deep inflammation of eyelid” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is H00.0 in ICD-10-CA?
H00.0 sits under H00 Hordeolum and chalazion, within H00-H06 Disorders of eyelid, lacrimal system and orbit, within Chapter 7: Diseases of the eye and adnexa (H00-H59).
What coding notes apply to H00.0?
ICD-10-CA lists Includes, Excludes notes for H00.0, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.