All ICD10 Codes
H00Not billable, use a more specific code below

Hordeolum and chalazion

In Disorders of eyelid, lacrimal system and orbit (H00-H05), chapter 7: Diseases of the Eye and Adnexa

28 billable codes under H00: none are a CC or MCC; none map to an HCC.

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Instructional notes

Also applies, from Disorders of eyelid, lacrimal system and orbit (H00-H05)

These notes sit on H00-H05 and apply to every code under it, including H00.

Excludes2: not included here, code separately if applicable

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers coding glaucoma by type, eye, and stage, including bilateral cases and stage changes, and coding blindness or low vision when the impairment category is undocumented.

Read Section I.C.7 (page 48)

All codes under H00

H00 can't be used on a claim. Pick a billable code below; grey headings group them.

H00 MS-DRGs

As the principal diagnosis, all 28 billable codes under H00 group to MS-DRG 124 or 125 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

Other codes that refer to H00

Notes on these codes point to H00.

  • O99.8 Includes: Conditions in D00-D48, H00-H95, M00-N99, and Q00-Q99
  • Z83.51 Includes: Conditions classifiable to H00-H53, H55-H59
  • Z86.6 Includes: Conditions classifiable to G00-G99, H00-H95

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

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.

Read more about eyelid disorders on MedlinePlus

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.