2027 ICD-10-CM Diagnosis Code H00Hordeolum and chalazion

ICD-10-CM Codes›H00–H59›H00-H05›H00

ICD-10-CM H00
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

H00 is a non-billable ICD-10-CM category code for hordeolum and chalazion, so it cannot be submitted on claims. Use a more specific code from this category instead, such as H00.011, H00.012, H00.013, and H00.014.

Code Identity

ICD-10-CM Code
H00
Billable Status
No — Non-Billable Category
Code Describes
Hordeolum and chalazion
Short Description
Hordeolum and chalazion
Same as the full description in the CMS dataset.
Chapter
H00-H05
Disorders of eyelid, lacrimal system and orbit

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH00-H05Disorders of eyelid, lacrimal system and orbit
CategoryH00Hordeolum and chalazion
This CodeH00Hordeolum and chalazion

Specific Coding for Hordeolum and chalazionOverview

Non-specific codes like H00 require more characters. Use one of these billable codes instead:

  • H00.0 for Hordeolum (externum) (internum) of eyelid

  • H00.01 for Hordeolum externum

  • H00.02 for Hordeolum internum

  • H00.03 for Abscess of eyelid

  • H00.1 for Chalazion

  • Use H00.11 for Chalazion right upper eyelid

  • Use H00.12 for Chalazion right lower eyelid

  • Use H00.13 for Chalazion right eye, unspecified eyelid

  • Use H00.14 for Chalazion left upper eyelid

  • Use H00.15 for Chalazion left lower eyelid

  • Use H00.16 for Chalazion left eye, unspecified eyelid

  • Use H00.19 for Chalazion unspecified eye, unspecified eyelid

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to H00: its own notes plus those printed at block H00-H05 and Chapter 7. A note printed at a category, block or chapter applies to every code under it.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Block H00-H05 Disorders of eyelid, lacrimal system and orbit applies to 574 codes
From Chapter 7 (H00-H59) Diseases of the eye and adnexa applies to 2,677 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • diabetes mellitus related eye conditions (E09.3-, E10.3-, E11.3-, E13.3-)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury (trauma) of eye and orbit (S05.-)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • syphilis related eye disorders (A50.01, A50.3-, A51.43, A52.71)

Notes

General instructions on how these codes are used.

From Chapter 7 (H00-H59) Diseases of the eye and adnexa applies to 2,677 codes
  • Use an external cause code following the code for the eye condition, if applicable, to identify the cause of the eye condition

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Patient EducationClinical

Eyelid Disorders

Eyelid disorders include a variety of conditions that affect your eyelids. Your eyelids protect your eyes and help keep them healthy. When you blink, they spread tears across your eyes and help wash away dirt or dust. You also close your eyelids when something comes near your eyes to protect them from injury.

The full article covers:

  • What are eyelid disorders?
  • What causes eyelid disorders?
  • What are common eyelid disorders?
  • What are the symptoms of eyelid disorders?
  • How are eyelid disorders diagnosed?
  • How are eyelid disorders treated?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About H00Overview

What is the ICD-10 code for hordeolum and chalazion?

H00 is the ICD-10-CM category for hordeolum and chalazion, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is H00 (Hordeolum and chalazion) a billable code?

No. This is a category header that groups the codes for hordeolum and chalazion, and headers cannot be submitted on claims. Claims for hordeolum and chalazion need a more specific code from this category, such as H00.011, H00.012, and H00.013.