H40.1511 Residual stage of open-angle glaucoma, right eye, mild stage

ICD-10-CM Code H40.1511: Residual stage of open-angle glaucoma, right eye, mild stage

ICD-10-CM code H40.1511 identifies the mild stage of a residual open-angle glaucoma condition in the right eye. Public source documents map this specific diagnosis code and label, while clinical literature establishes that primary open-angle glaucoma is a distinct subtype of the disease. Medicare publications reference this code in billing and coding guidance for related ocular services and procedures. 6 2 4 5

Plain-language overview

Primary open-angle glaucoma is identified in clinical literature as a subtype of glaucoma, and clinicians differentiate open-angle glaucoma from chronic angle-closure glaucoma based on clinical presentations and disease progression. 1 2

What this code represents

The ICD-10-CM code H40.1511 maps directly to the diagnosis label residual stage of open-angle glaucoma, right eye, mild stage. 6

Source listings place H40.1511 among a sequence of codes for the right eye that include H40.1510 for unspecified stage, H40.1512 for moderate stage, H40.1513 for severe stage, and H40.1514 for indeterminate stage. 6

Official diagnosis code listings include separate entries for residual stage of open-angle glaucoma in the left eye, bilateral, and unspecified eye, all denoting a mild stage. 3 6

Documentation considerations

The diagnosis label for H40.1511 specifies the right eye and a mild stage, and Medicare billing and coding articles reference this diagnosis in the context of open-angle glaucoma procedures and services. 6 4 5

Coverage and utilization context

Medicare articles provide billing and coding guidance that lists the residual stage of open-angle glaucoma, right eye, mild stage, while a separate Medicaid source lists the identical diagnosis description. 4 5 3

What the sources add

A clinical reference document provides the explicit alphanumeric mapping of H40.1511 to its full diagnosis label, whereas Medicare publications mention the condition and code fragments within billing and coding guidance for specific ocular services. 6 4 5

Clinical literature identifies primary open-angle glaucoma as a prevalent subtype of glaucoma, while a separate clinical reference details the differentiation of open-angle glaucoma from angle-closure glaucoma. 2 1

Sources

1. Bookshelf — ncbi.nlm.nih.gov; accessed 2026-07-25.
2. Emerging glaucoma treatments: are we seeing an improvement in adherence? — pmc.ncbi.nlm.nih.gov; accessed 2026-07-25.
3. Diagnosis Code — medicaid.ncdhhs.gov; accessed 2026-07-25.
4. Article - Billing and Coding: Insertion of anterior segment aqueous drainage device, without extraocular reservoir, external approach (0192T 66183) (A52432) — cms.gov; accessed 2026-07-25.
5. Article - Billing and Coding: Corneal Pachymetry (A56457) — cms.gov; accessed 2026-07-25.
6. Supplemental Material: Data Definitions — medrxiv.org; accessed 2026-07-25.