All ICD10 Codes

H40.00

Non-Billable
ChapterH00–H59
Ranksubcategory
Official Description

Preglaucoma, unspecified

Use a more specific code (4 billable)
H40.001Preglaucoma, unspecified, right eyeH40.002Preglaucoma, unspecified, left eyeH40.003Preglaucoma, unspecified, bilateralH40.009Preglaucoma, unspecified, unspecified eye
Metadata & Insights
  • •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 NotesView H40 Notes

Clinical Hierarchy

BillableHas subcodes
CH7Diseases of the eye and adnexa (H00-H59)
H40-H42Glaucoma (H40-H42)
H40Glaucoma
H40.0Glaucoma suspect
H40.00Preglaucoma, unspecifiedNot billable
H40.001Preglaucoma, unspecified, right eyeBillable
H40.002Preglaucoma, unspecified, left eyeBillable
H40.003Preglaucoma, unspecified, bilateralBillable
H40.009Preglaucoma, unspecified, unspecified eyeBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to H40.00:

chapterCH7
Diseases of the eye and adnexa (H00-H59)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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