H40.1

Non-Billable

ChapterH00–H59

Ranksubcategory

Official Description

Open-angle glaucoma

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Non-billable category (requires more specific sub-code).
•Chapter 7: Diseases of the Eye and Adnexa (H00-H59).

General instructions are available for the parent sections:

View CH7 Notes View H40 Notes

Clinical Hierarchy

CH7Diseases of the eye and adnexa (H00-H59)

H40-H42Glaucoma (H40-H42)

H40Glaucoma

H40.1Open-angle glaucoma

H40.10Unspecified open-angle glaucoma

H40.11Primary open-angle glaucoma

H40.12Low-tension glaucoma

H40.13Pigmentary glaucoma

H40.14Capsular glaucoma with pseudoexfoliation of lens

H40.15Residual stage of open-angle glaucoma

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to H40.1:

categoryH40

Glaucoma

View context instructions

chapterCH7

Diseases of the eye and adnexa (H00-H59)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to H40.1. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

8 raw paths

Glaucoma8 unique routes

open angle→H40.1(6 variants)

primary→H40.1(5 variants)

capsular (with pseudoexfoliation of lens)→H40.1

low-tension→H40.1

pigmentary→H40.1

residual stage→H40.1

simple (chronic)→H40.1

simplex→H40.1

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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