Back to ICD-10 library
ICD-10-CM · FY 2026 APRIL UPDATE

H40

Glaucoma

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
H40.0Glaucoma suspectCategory
H40.00Preglaucoma, unspecifiedCategory
H40.001Preglaucoma, unspecified, right eyeBillable
H40.002Preglaucoma, unspecified, left eyeBillable
H40.003Preglaucoma, unspecified, bilateralBillable
H40.009Preglaucoma, unspecified, unspecified eyeBillable
H40.01Open angle with borderline findings, low riskCategory
H40.011Open angle with borderline findings, low risk, right eyeBillable
H40.012Open angle with borderline findings, low risk, left eyeBillable
H40.013Open angle with borderline findings, low risk, bilateralBillable
H40.019Open angle with borderline findings, low risk, unspecified eyeBillable
H40.02Open angle with borderline findings, high riskCategory
H40.021Open angle with borderline findings, high risk, right eyeBillable
H40.022Open angle with borderline findings, high risk, left eyeBillable
H40.023Open angle with borderline findings, high risk, bilateralBillable
H40.029Open angle with borderline findings, high risk, unspecified eyeBillable
H40.03Anatomical narrow angleCategory
H40.031Anatomical narrow angle, right eyeBillable
H40.032Anatomical narrow angle, left eyeBillable
H40.033Anatomical narrow angle, bilateralBillable
H40.039Anatomical narrow angle, unspecified eyeBillable
H40.04Steroid responderCategory
H40.041Steroid responder, right eyeBillable
H40.042Steroid responder, left eyeBillable
H40.043Steroid responder, bilateralBillable
H40.049Steroid responder, unspecified eyeBillable
H40.05Ocular hypertensionCategory
H40.051Ocular hypertension, right eyeBillable
H40.052Ocular hypertension, left eyeBillable
H40.053Ocular hypertension, bilateralBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.