H40.243 Residual stage of angle-closure glaucoma, bilateral

ICD-10-CM Code H40.243: Residual stage of angle-closure glaucoma, bilateral

ICD-10-CM code H40.243 identifies the bilateral residual stage of angle-closure glaucoma. This active diagnosis concept is classified under the broader parent category of residual angle-closure glaucoma. The code appears in official terminology records and payer billing articles, though its presence in a policy does not guarantee coverage. 1 4

Plain-language overview

Glaucoma encompasses a group of diseases capable of damaging the optic nerve in one or both eyes, with angle-closure glaucoma representing a specific type of this condition. 6

What this code represents

The ICD-10-CM terminology record assigns H40.243 the preferred name of residual stage of angle-closure glaucoma, bilateral, and classifies its semantic type as a Disease or Syndrome. 1

Coding details

Within the ICD-10-CM hierarchy, H40.243 is a narrower concept under the parent concept H40.24, which is designated as the residual stage of angle-closure glaucoma. 1

A mapping resource groups the bilateral residual stage of angle-closure glaucoma alongside distinct right eye, left eye, and unspecified eye lateralities for this same condition. 3

Coverage and utilization context

A Medicare billing article for scanning computerized ophthalmic diagnostic imaging includes the H40.243 code within a broader list of glaucoma and eye trauma diagnoses. 4

What the sources add

While the terminology record defines the diagnosis code, the Medicare article provides operational billing context by listing H40.243 among diagnostic codes relevant to ophthalmic imaging services. 1 4

Clinical context

Clinical literature notes that blindness from primary angle-closure glaucoma can be reduced if the ongoing angle-closure process is arrested at an early stage. 2

Documentation considerations

The official terminology record for H40.243 specifies the bilateral laterality and the residual stage of angle-closure glaucoma as the exact elements comprising this diagnostic concept. 1

Questions to verify

Reviewers may verify whether the clinical record aligns with the exact terminology assigned to H40.243, which specifies bilateral laterality and the residual stage of angle-closure glaucoma. 1

Sources

1. ICD-10-CM H40.243 terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Clinical implication of recent randomized control trial in primary angle-closure disease management — pmc.ncbi.nlm.nih.gov; accessed 2026-07-27.
3. Phecode 365.2 · ExPRSweb — csg.sph.umich.edu; accessed 2026-07-27.
4. Article - Billing and Coding: Scanning Computerized Ophthalmic Diagnostic Imaging (SCODI) (A57804) — cms.gov; accessed 2026-07-27.
5. Clinical Policy: Aqueous Shunt — centenevision.com; accessed 2026-07-27.
6. H40.243 — Residual stage of angle-closure glaucoma, bilateral | ICD-10 Code · Eleplan — eleplan.com; accessed 2026-07-27.