ICD-10 Code for Glaucoma

The ICD-10-CM code for glaucoma is H40.9 — Unspecified glaucoma. This is the code the Alphabetic Index gives for glaucoma with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).

BillableUnspecified

H40.9 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.

Which glaucoma code should you use?

The Alphabetic Index lists 35 codes under Glaucoma. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.

By type

absolute	H44.51Not billable	Absolute glaucoma
angle-closure	H40.20Not billable	Unspecified primary angle-closure glaucoma
borderline	H40.00Not billable	Preglaucoma, unspecified
childhood	Q15.0	Congenital glaucoma
congenital	Q15.0	Congenital glaucoma
hypersecretion	H40.82Not billable	Hypersecretion glaucoma
infantile	Q15.0	Congenital glaucoma
malignant	H40.83Not billable	Aqueous misdirection
neovascular secondary angle closure	H40.84Not billable	Neovascular secondary angle closure glaucoma
newborn	Q15.0	Congenital glaucoma
open angle	H40.10Not billable	Unspecified open-angle glaucoma
secondary	H40.5Not billable	Glaucoma secondary to other eye disorders
simple	H40.11Not billable	Primary open-angle glaucoma
simplex	H40.11Not billable	Primary open-angle glaucoma
specified type NEC	H40.89	Other specified glaucoma
suspect	H40.00Not billable	Preglaucoma, unspecified
syphilitic	A52.71	Late syphilitic oculopathy
tuberculous	A18.59	Other tuberculosis of eye

Glaucoma with

increased episcleral venous pressure

H40.81Not billable

Glaucoma with increased episcleral venous pressure

Glaucoma angle-closure

acute	H40.21Not billable	Acute angle-closure glaucoma
chronic	H40.22Not billable	Chronic angle-closure glaucoma
intermittent	H40.23Not billable	Intermittent angle-closure glaucoma
residual stage	H40.24Not billable	Residual stage of angle-closure glaucoma
secondary, neovascular	H40.84Not billable	Neovascular secondary angle closure glaucoma

Glaucoma in

amyloidosis	E85.4	Organ-limited amyloidosis
aniridia	Q13.1	Absence of iris
endocrine disease NOS	E34.9	Endocrine disorder, unspecified
Lowe's syndrome	E72.03	Lowe's syndrome
metabolic disease NOS	E88.9	Metabolic disorder, unspecified
onchocerciasis	B73.02	Onchocerciasis with glaucoma
Rieger anomaly	Q13.81	Rieger anomaly

Glaucoma open angle

primary	H40.11Not billable	Primary open-angle glaucoma
primary › capsular	H40.14Not billable	Capsular glaucoma with pseudoexfoliation of lens
primary › low-tension	H40.12Not billable	Low-tension glaucoma
primary › pigmentary	H40.13Not billable	Pigmentary glaucoma
primary › residual stage	H40.15Not billable	Residual stage of open-angle glaucoma

Glaucoma secondary

drugs	H40.6Not billable	Glaucoma secondary to drugs
inflammation	H40.4Not billable	Glaucoma secondary to eye inflammation
trauma	H40.3Not billable	Glaucoma secondary to eye trauma

Glaucoma traumatic

newborn

P15.3

Birth injury to eye

Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources