H40.52
⚠ Non-billable (Header)Glaucoma secondary to other eye disorders, left eye
Diseases of the eye and adnexa (H00-H59)
⚠️ This is a category header code — not billable. Use a more specific child code below.
✅ No additional coding notes for H40.52
Child Codes (5)
H40.52X0Glaucoma secondary to other eye disorders, left eye, stage unspecifiedH40.52X1Glaucoma secondary to other eye disorders, left eye, mild stageH40.52X2Glaucoma secondary to other eye disorders, left eye, moderate stageH40.52X3Glaucoma secondary to other eye disorders, left eye, severe stageH40.52X4Glaucoma secondary to other eye disorders, left eye, indeterminate stage
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CodeH40.52
BillableNo — Header code
ParentH40.5
CategoryDiseases of the eye and adnexa (H00-H59)
Excludes10 rule(s)
Excludes20 note(s)
Child codes5
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)