ICD-10-CM Code H01.004

Unspecified blepharitis left upper eyelid

Version 2021 Replaced Code Billable Code

Valid for Submission

H01.004 is a billable code used to specify a medical diagnosis of unspecified blepharitis left upper eyelid. The code is valid for the fiscal year 2021 for the submission of HIPAA-covered transactions. The ICD-10-CM code H01.004 might also be used to specify conditions or terms like blepharitis of bilateral upper eyelids, blepharitis of left upper eyelid, blepharitis of right upper eyelid, blepharitis of upper and lower eyelids of bilateral eyes, meibomianitis of bilateral upper and lower eyelids, meibomianitis of left eyelid, etc

Short Description:Unspecified blepharitis left upper eyelid
Long Description:Unspecified blepharitis left upper eyelid

Replaced Code

This code was replaced in the 2021 ICD-10 code set with the code(s) listed below. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2020. This code was replaced for the FY 2021 (October 1, 2020 - September 30, 2021).

  • H01.00B - Unspecified blepharitis left eye, upper and lower eyelids
  • H01.00B - Unspecified blepharitis left eye, upper and lower eyelids

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code H01.004 are found in the index:


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Blepharitis of bilateral upper eyelids
  • Blepharitis of left upper eyelid
  • Blepharitis of right upper eyelid
  • Blepharitis of upper and lower eyelids of bilateral eyes
  • Meibomianitis of bilateral upper and lower eyelids
  • Meibomianitis of left eyelid
  • Meibomianitis of right eyelid

Diagnostic Related Groups

The ICD-10 code H01.004 is grouped in the following groups for version MS-DRG V38.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2020 through 09/30/2021.


Convert H01.004 to ICD-9

  • 373.00 - Blepharitis NOS (Approximate Flag)

Code Classification

  • Diseases of the eye and adnexa (H00–H59)
    • Disorders of eyelid, lacrimal system and orbit (H00-H05)
      • Other inflammation of eyelid (H01)

Code History

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

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

  • Eyelids that turn in or out
  • Eyelids that droop
  • Abnormal blinking or twitching

Treatment of eyelid problems depends on the cause.

  • Blepharitis (Medical Encyclopedia)
  • Chalazion (Medical Encyclopedia)
  • Ectropion (Medical Encyclopedia)
  • Entropion (Medical Encyclopedia)
  • Eyelid bump (Medical Encyclopedia)
  • Eyelid drooping (Medical Encyclopedia)
  • Eyelid lift (Medical Encyclopedia)
  • Eyelid twitch (Medical Encyclopedia)

[Learn More]