H40.53X2 Glaucoma secondary to other eye disorders, bilateral, moderate stage

ICD-10-CM Code H40.53X2: Glaucoma secondary to other eye disorders, bilateral, moderate stage

ICD-10-CM code H40.53X2 identifies glaucoma secondary to other eye disorders when the condition is bilateral and at a moderate stage. The code is an active diagnosis concept that sits under a broader parent category for bilateral secondary glaucoma. It is distinct from related codes that specify different lateralities or severity levels. 1 3

Plain-language overview

This diagnosis concept represents a disease or syndrome that is classified within the ICD-10-CM terminology system and applies to a bilateral moderate stage condition. 1

What this code represents

The official preferred name for H40.53X2 is glaucoma secondary to other eye disorders, bilateral, moderate stage, and the terminology record maintains an active status for this specific diagnosis. 1

Coding details

Within the ICD-10-CM hierarchy, H40.53X2 is a narrower concept under the parent code H40.53, which encompasses bilateral glaucoma secondary to other eye disorders without specifying the severity stage. 1

Related variations in this category include bilateral secondary glaucoma at unspecified, mild, severe, and indeterminate stages, as well as right eye, left eye, and unspecified eye designations. 3

Documentation considerations

Clinical coding references indicate that when submitting claims for certain procedures, documentation for this condition must reflect that it is recorded as a secondary diagnosis. 6

Clinical context

Secondary glaucomas can arise when pathological changes in the crystalline lens disrupt aqueous humor dynamics, and management of moderate to severe presentations often necessitates targeted specialty consultations. 2

Coverage and utilization context

Billing and coding articles for ophthalmic diagnostic imaging and corneal pachymetry list related secondary glaucoma diagnoses, such as glaucoma secondary to eye inflammation, bilateral, moderate stage. 4 5

What the sources add

A comparison of sources shows that terminology authorities classify H40.53X2 as a distinct disease concept, whereas billing guidance specifies that this code requires a secondary diagnosis designation. 1 6

The terminology record provides the structural hierarchy and active status for this diagnosis, while clinical references describe pathological lens changes that represent a subset of secondary glaucomas. 1 2

Sources

1. ICD-10-CM H40.53X2 terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Bookshelf — ncbi.nlm.nih.gov; accessed 2026-07-27.
3. Phecode 365 · ExPRSweb — csg.sph.umich.edu; accessed 2026-07-27.
4. Article - Billing and Coding: Scanning Computerized Ophthalmic Diagnostic Imaging (SCODI) (A56692) — cms.gov; accessed 2026-07-27.
5. Article - Billing and Coding: Corneal Pachymetry (A56548) — cms.gov; accessed 2026-07-27.
6. Article - Billing and Coding: Cataract Surgery (A56613) — aao.org; accessed 2026-07-27.