H40.1513 Residual stage of open-angle glaucoma, right eye, severe stage

ICD-10-CM Code H40.1513: Residual stage of open-angle glaucoma, right eye, severe stage

ICD-10-CM code H40.1513 denotes the residual stage of open-angle glaucoma in the right eye, severe stage. Open-angle glaucoma is a condition characterized by increased intraocular pressure that can result in optic neuropathy and vision loss. This specific diagnosis code appears in official state Medicaid listings and federal Medicare billing articles. 1 3 4

Plain-language overview

Open-angle glaucoma is characterized by increased intraocular pressure that can result in optic neuropathy and vision loss. The condition is classified as open-angle or closed-angle depending on the obstruction in the anterior chamber. 1

What this code represents

The diagnosis code H40.1513 corresponds to the residual stage of open-angle glaucoma affecting the right eye at the severe stage. This exact label is explicitly listed in an official state Medicaid diagnosis code document. 3

The same state Medicaid document lists separate codes for the residual stage of open-angle glaucoma in the right eye at mild, moderate, indeterminate, and unspecified stages. It also lists variations for the left eye, bilateral eyes, and unspecified eye. 3

Coding details

Federal Medicare billing articles list H40.152 as the residual stage of open-angle glaucoma for the right eye. These articles mention this diagnosis code in the context of procedures involving anterior segment aqueous drainage devices and corneal pachymetry. 4 5

Documentation considerations

The state Medicaid document provides distinct diagnostic labels for the residual stage of open-angle glaucoma based on laterality and severity. The available sources do not specify the clinical documentation elements needed to select H40.1513 over H40.152. 3 4

Coverage and utilization context

The residual stage of open-angle glaucoma right eye code appears in federal Medicare billing articles for corneal pachymetry and aqueous drainage devices. The provided sources do not establish that this diagnosis guarantees coverage for these procedures. 4 5

What the sources add

A state Medicaid source provides the exact diagnostic label for H40.1513, while federal Medicare sources list the broader right eye residual glaucoma code H40.152. This comparison shows the code appears across both state and federal healthcare program documents. 3 4 5

Clinical context

Primary open-angle glaucoma is associated with several genes and genetic loci. The provided clinical literature does not detail the specific symptoms or prognosis for the residual stage of open-angle glaucoma. 1

Questions to verify

The provided sources do not establish the clinical definition of the residual stage of glaucoma. Reviewers may need to verify the exact clinical criteria that distinguish a residual stage from an active severe stage of open-angle glaucoma. 1 3

Sources

1. Bookshelf — ncbi.nlm.nih.gov; accessed 2026-07-25.
2. Bookshelf — ncbi.nlm.nih.gov; accessed 2026-07-25.
3. Diagnosis Code — medicaid.ncdhhs.gov; accessed 2026-07-25.
4. Article - Billing and Coding: Corneal Pachymetry (A56548) — cms.gov; accessed 2026-07-25.
5. 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.