H40.40
⚠ Non-billable (Header)Glaucoma secondary to eye inflammation, unspecified 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 H40.40
Child Codes (5)
H40.40X0Glaucoma secondary to eye inflammation, unspecified eye, stage unspecifiedH40.40X1Glaucoma secondary to eye inflammation, unspecified eye, mild stageH40.40X2Glaucoma secondary to eye inflammation, unspecified eye, moderate stageH40.40X3Glaucoma secondary to eye inflammation, unspecified eye, severe stageH40.40X4Glaucoma secondary to eye inflammation, unspecified eye, indeterminate stage
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CodeH40.40
BillableNo — Header code
ParentH40.4
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)