2027 ICD-10-CM Diagnosis Code H01.01BUlcerative blepharitis left eye, upper and lower eyelids

ICD-10-CM Codes›H00–H59›H00-H05›H01

ICD-10-CM H01.01B
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

H01.01B is a billable ICD-10-CM diagnosis code for ulcerative blepharitis left eye, upper and lower eyelids. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 124 through 125. Coders also document this condition as blepharitis of left lower eyelid. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Cornea and external disease.

Code Identity

ICD-10-CM Code
H01.01B
Billable Status
Yes — Valid for Submission
Code Describes
Ulcerative blepharitis left eye, upper and lower eyelids
Short Description
Ulcerative blepharitis left eye, upper and lower eyelids
Same as the full description in the CMS dataset.
Parent Code
H01.01
Ulcerative blepharitis

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH00-H05Disorders of eyelid, lacrimal system and orbit
CategoryH01Other inflammation of eyelid
This CodeH01.01BUlcerative blepharitis left eye, upper and lower eyelids

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Blepharitis of left lower eyelid
  • Blepharitis of left upper and lower eyelids
  • Blepharitis of left upper eyelid
  • Ulcerative blepharitis
  • Ulcerative blepharitis of left eyelid
  • Ulcerative blepharitis of left lower eyelid
  • Ulcerative blepharitis of left upper and lower eyelids
  • Ulcerative blepharitis of left upper eyelid
  • Ulcerative blepharitis of lower eyelid
  • Ulcerative blepharitis of upper eyelid

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to H01.01B: its own notes plus those printed at H01.0, block H00-H05, and Chapter 7. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From H01.0 Blepharitis applies to 27 codes
  • blepharoconjunctivitis (H10.5-)

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.

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR EYE001
Cornea and external disease
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Blepharitis

    inflammation of the eyelids.

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 History & ChangesHistory

Replacement H01.01B replaces the following previously assigned code(s):

  • H01.014 - Ulcerative blepharitis left upper eyelid
  • H01.015 - Ulcerative blepharitis left lower eyelid
FY 2019AddedAdded to the ICD-10-CM code setEffective October 1, 2018.
FY 2020–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About H01.01BOverview

What is the ICD-10 code for ulcerative blepharitis left eye, upper and lower eyelids?

The ICD-10-CM code for ulcerative blepharitis left eye, upper and lower eyelids is H01.01B (sometimes written as H0101B). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is H01.01B (Ulcerative blepharitis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report ulcerative blepharitis left eye, upper and lower eyelids on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does H01.01B group to?

When ulcerative blepharitis left eye, upper and lower eyelids is the principal diagnosis on an inpatient stay, it groups to MS-DRG 125, 124, with relative weights from 0.7699 to 1.2470 depending on complications. Higher weights mean higher Medicare reimbursement.

Can H01.01B be reported with a code from H10.5?

Not as a rule. The Excludes1 note at H01.0, which applies to H01.01B, lists "blepharoconjunctivitis (H10.5-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).