H40.821 Hypersecretion glaucoma, right eye

Billable ICD-10-CM code, FY2026.

Applies from H40 Glaucoma

Excludes1 (never code together)

• absolute glaucoma (H44.51-)
• congenital glaucoma (Q15.0)
• traumatic glaucoma due to birth injury (P15.3)

Risk adjustment (HCC)

• RxHCC V08: HCC 244 — Other Non-Acute Glaucoma

MS-DRG index

Defines the logic of DRG(s) 124-125 in MDC 02.

Approximate ICD-9-CM (GEMs)

• 365.81 Hypersecretion glaucoma (approximate)

Code annotations containing back-references to H40.821

Back-references to H40

• Use Additional: E08.39 Diabetes mellitus due to underlying condition with other diabetic ophthalmic complication ("diabetic glaucoma (H40-H42)")
• Use Additional: E09.39 Drug or chemical induced diabetes mellitus with other diabetic ophthalmic complication ("diabetic glaucoma (H40-H42)")
• Use Additional: E10.39 Type 1 diabetes mellitus with other diabetic ophthalmic complication ("diabetic glaucoma (H40-H42)")
• Use Additional: E11.39 Type 2 diabetes mellitus with other diabetic ophthalmic complication ("diabetic glaucoma (H40-H42)")
• Use Additional: E13.39 Other specified diabetes mellitus with other diabetic ophthalmic complication ("diabetic glaucoma (H40-H42)")
• Code First: H26.23 Glaucomatous flecks (subcapsular) ("underlying glaucoma (H40-H42)")

Nearby codes

• H40.811 Glaucoma with increased episcleral venous pressure, right eye
• H40.812 Glaucoma with increased episcleral venous pressure, left eye
• H40.813 Glaucoma with increased episcleral venous pressure, bilateral
• H40.819 Glaucoma with increased episcleral venous pressure, unspecified eye
• H40.82 Hypersecretion glaucoma
• H40.821 Hypersecretion glaucoma, right eye (this code)
• H40.822 Hypersecretion glaucoma, left eye
• H40.823 Hypersecretion glaucoma, bilateral
• H40.829 Hypersecretion glaucoma, unspecified eye
• H40.83 Aqueous misdirection
• H40.831 Aqueous misdirection, right eye