H02.221 Mechanical lagophthalmos right upper eyelid

ICD-10-CM Code H02.221: Mechanical Lagophthalmos Right Upper Eyelid

ICD-10-CM code H02.221 represents mechanical lagophthalmos of the right upper eyelid, classified as a disease or syndrome. The code is active for the 2026 version and falls under the parent category H02.22. Clinical literature describes lagophthalmos as incomplete or absent blink, and payer articles reference this code for eyelid surgery billing guidance. 1 2 5

Plain-language overview

Clinical literature describes typical features of lagophthalmos as incomplete or absent blink, which can illustrate incomplete eyelid closure and significant exposure of the ocular surface. 2

The terminology record assigns this diagnosis code the preferred name of mechanical lagophthalmos right upper eyelid, establishing its specific label within the ICD-10-CM version 2026. 1

What this code represents

The terminology record classifies H02.221 with the semantic type of disease or syndrome, maintaining an active status for the 2026 ICD-10-CM version cycle. 1

Within the coding hierarchy, the terminology record identifies H02.221 as a narrower concept under the parent concept H02.22, which is designated as mechanical lagophthalmos. 1

Coding details

A phecode listing includes separate entries for mechanical lagophthalmos of the right eye, left eye, and unspecified eye, all with unspecified eyelid variants. 3

Documentation considerations

Clinical assessment of eyelid positioning involves measuring tarsal height and scleral show, which represents the distance between the limbus and the eyelid margin. 2

Coverage and utilization context

A payer billing article for blepharoplasty, eyelid surgery, and brow lift includes H02.221 within its billing, coding, or other guidelines for these procedures. 5

What the sources add

While the terminology record establishes the official code definition, clinical literature adds that upper eyelid loading is considered a benchmark technique for managing paralytic lagophthalmos. 1 2

The terminology record provides the official code definition, whereas a payer billing article lists the code within its billing and coding guidance for blepharoplasty and eyelid surgery. 1 5

Sources

1. ICD-10-CM H02.221 terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Eyelid Malpositions and Ocular Surface Disease: Clinical Correlations and Management Strategies — pmc.ncbi.nlm.nih.gov; accessed 2026-07-27.
3. Phecode 374.2 · Cancer PRSweb — csg.sph.umich.edu; accessed 2026-07-27.
4. Article - Billing and Coding: Blepharoplasty, Blepharoptosis Repair and Surgical Procedures of the Brow (A57025) — cms.gov; accessed 2026-07-27.
5. Article - Billing and Coding: Blepharoplasty, Eyelid Surgery, and Brow Lift (A56503) — cms.gov; accessed 2026-07-27.
6. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-27.