H40.112 (Primary open-angle glaucoma, left eye) is an umbrella ICD-10-CM medical diagnosis code in the Diseases of the eye and adnexa chapter. It identifies cases of primary open-angle glaucoma, left eye for clinical documentation, billing and epidemiological tracking.

ICD-10-CM · Category

H40.112 — Primary open-angle glaucoma, left eye

Chapter H00-H59: Diseases of the eye and adnexa

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Sub-codes under H40.112

H40.1120Primary open-angle glaucoma, left eye, stage unspecifiedH40.1121Primary open-angle glaucoma, left eye, mild stageH40.1122Primary open-angle glaucoma, left eye, moderate stageH40.1123Primary open-angle glaucoma, left eye, severe stageH40.1124Primary open-angle glaucoma, left eye, indeterminate stage

Related diagnoses

H40.111Primary open-angle glaucoma, right eyeH40.113Primary open-angle glaucoma, bilateralH40.119Primary open-angle glaucoma, unspecified eye

Common questions about H40.112 (Primary open-angle glaucoma, left eye)

What does ICD-10 code H40.112 mean?
H40.112 is the ICD-10-CM 2025 code for Primary open-angle glaucoma, left eye. ICD-10-CM is the medical coding system used by clinicians, hospitals and insurers worldwide to classify diseases and conditions in a standard way.
Is H40.112 a billable diagnosis code?
H40.112 is a category-level (umbrella) code rather than a billable specific code. For billing purposes, clinicians typically use a more specific sub-code under H40.112. Browse the sub-codes listed on this page.
Which ICD-10 chapter does H40.112 belong to?
H40.112 belongs to the chapter "Diseases of the eye and adnexa" (codes H00-H59). ICD-10-CM organises codes into 22 chapters by body system or condition type, which helps clinicians navigate related diagnoses.
Where can I get plain-language information about Primary open-angle glaucoma, left eye?
For a plain-language explanation of Primary open-angle glaucoma, left eye, ask GoDavaii's Health AI - it explains medical conditions in 22+ Indian languages, free, with no signup. Tap "Ask GoDavaii AI about Primary open-angle glaucoma, left eye" above to get a personalised answer.

Source: ICD-10-CM 2025 (Centers for Medicare & Medicaid Services, public domain). Codes valid from October 1, 2024. CMS source ↗