ICD-10-CM · Billable Code
H40.031 — Anatomical narrow angle, right eye
Chapter H00-H59: Diseases of the eye and adnexa
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Common questions about H40.031 (Anatomical narrow angle, right eye)
What does ICD-10 code H40.031 mean?
H40.031 is the ICD-10-CM 2025 code for Anatomical narrow angle, right 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 H40.031 a billable diagnosis code?
Yes, H40.031 is a billable / specific ICD-10-CM code, meaning it can be used by clinicians and hospitals as a primary or secondary diagnosis on claims and electronic health records.
Which ICD-10 chapter does H40.031 belong to?
H40.031 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 Anatomical narrow angle, right eye?
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Source: ICD-10-CM 2025 (Centers for Medicare & Medicaid Services, public domain). Codes valid from October 1, 2024. CMS source ↗