What is ICD-10 code H01.026?

H01.026 is the ICD-10-CM diagnosis code for Squamous blepharitis left eye, unspecified eyelid. It belongs to the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59). H01.026 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. H01.026 is part of the FY2026 ICD-10-CM code set published by the CMS National Center for Health Statistics and used on Medicare, Medicaid, and commercial claims in the United States.

Yes. H01.026 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. H01.026 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

Which HCC does H01.026 map to under V28?

H01.026 has no payable CMS-HCC V28 mapping in the final FY2026 CMS file.

What RAF reference is published for H01.026?

H01.026 has no V28 reference coefficient because the final FY2026 source verifies no payable V28 mapping.

What is the V28 vs V24 difference for H01.026?

H01.026 has verified no payable V28 mapping in the final FY2026 source. Select a historical effective period before making any V24 comparison.

2026 ICD-10-CM H01.026: Squamous blepharitis left eye

H01.026 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC coding software

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Code lookupH01.026Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Diseases of the eye and adnexa (H00-H59) / Disorders of eyelid, lacrimal system and orbit (H00-H05)

H01.026

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Squamous blepharitis left eye, unspecified eyelid

This condition involves inflammation and scaling of the eyelids on the left eye, caused by a buildup of dead skin cells and bacteria along the eyelid margin. It results in redness, irritation, and crusty debris on the eyelashes.

CMS-HCC V28

N/A

—

Not risk-adjusted for this model/period.

Not mapped

CMS-HCC V24

Historical

Not used for standard CY2026 Medicare Advantage payment. Select a historical period to review V24.

Not used for CY2026 payment

ACA/HHS

N/A

—

Not risk-adjusted for this model/period.

Not mapped

ESRD/PACE

N/A

—

Not risk-adjusted for this model/period.

Not mapped

RXHCC

N/A

—

Not risk-adjusted for this model/period.

Not mapped

Code Book Path

Official

H01.0Blepharitis

H01.02Squamous blepharitis

H01.026Squamous blepharitis left eye, unspecified eyelid

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for H01.026 in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for H01.026 in this effective period.

Related Child Codes

Official

H01.021Squamous blepharitis right upper eyelid

H01.022Squamous blepharitis right lower eyelid

H01.023Squamous blepharitis right eye, unspecified eyelid

H01.024Squamous blepharitis left upper eyelid

H01.025Squamous blepharitis left lower eyelid

Includes

Official

ICD-10-CM does not list Includes notes for H01.026 in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for H01.026 in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for H01.026 in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for H01.026 in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for H01.026 in this effective period.

Buddy Documentation Tip

HCC Buddy guidance

Verify laterality is documented as left eye in the medical record before assigning the '6' laterality indicator

Confirm whether the condition affects the upper eyelid, lower eyelid, or both; if specified, use more specific codes H01.021 (upper) or H01.022 (lower) instead of unspecified H01.026

Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →

Is H01.026 an HCC code?

No. H01.026 is a billable ICD-10-CM code with no mapping under the CMS-HCC V28 or V24 community payment models, and none under the ESRD, Part D RxHCC, or HHS-HCC models.

Code: H01.026
Description: Squamous blepharitis left eye, unspecified eyelid
HCC (V28): No CMS-HCC V28 mapping
RAF reference coefficient: —
Billable: Yes
Payment year: 2026

Coder workflow notes

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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

H01.026 is the ICD-10-CM diagnosis code for squamous blepharitis left eye, unspecified eyelid. This condition involves inflammation and scaling of the eyelids on the left eye, caused by a buildup of dead skin cells and bacteria along the eyelid margin. It results in redness, irritation, and crusty debris on the eyelashes. H01.026 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering disorders of eyelid, lacrimal system and orbit (h00-h05).

H01.026 is a billable ICD-10-CM code, but the current payload does not show a mapping under the CMS-HCC V28 or V24 community payment models, and none under the ESRD, Part D RxHCC, or HHS-HCC models. Do not assign risk adjustment value from this page when no source-backed mapping is shown; verify the applicable model and payment year.

Verify laterality is documented as left eye in the medical record before assigning the '6' laterality indicator.

HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for H01.026 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•Verify laterality is documented as left eye in the medical record before assigning the '6' laterality indicator
•Confirm whether the condition affects the upper eyelid, lower eyelid, or both; if specified, use more specific codes H01.021 (upper) or H01.022 (lower) instead of unspecified H01.026