2021 ICD-10-CM Code H00.01

Hordeolum externum

Version 2021

Not Valid for Submission

H00.01 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of hordeolum externum. The code is not specific and is NOT valid for the year 2021 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

ICD-10:H00.01
Short Description:Hordeolum externum
Long Description:Hordeolum externum

Code Classification

Specific Coding for Hordeolum externum

Non-specific codes like H00.01 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for hordeolum externum:

  • BILLABLE CODE - Use H00.011 for Hordeolum externum right upper eyelid
  • BILLABLE CODE - Use H00.012 for Hordeolum externum right lower eyelid
  • BILLABLE CODE - Use H00.013 for Hordeolum externum right eye, unspecified eyelid
  • BILLABLE CODE - Use H00.014 for Hordeolum externum left upper eyelid
  • BILLABLE CODE - Use H00.015 for Hordeolum externum left lower eyelid
  • BILLABLE CODE - Use H00.016 for Hordeolum externum left eye, unspecified eyelid
  • BILLABLE CODE - Use H00.019 for Hordeolum externum unspecified eye, unspecified eyelid

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code H00.01:


Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.

Information for Patients


Eyelid Disorders

Your eyelids help protect your eyes. When you blink, your eyelids spread moisture over your eyes. Blinking also helps move dirt or other particles off the surface of the eye. You close your eyelids when you see something coming toward your eyes. This can help protect against injuries.

Like most other parts of your body, your eyelids can get infected, inflamed, or even develop cancer. There are also specific eyelid problems, including

Treatment of eyelid problems depends on the cause.


[Learn More in MedlinePlus]

Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)