H40.22 Chronic angle-closure glaucoma

Non-billable header with 4 child codes.

Applicable to

• Chronic primary angle closure glaucoma

7th character note

• One of the following 7th characters is to be assigned to each code in subcategory H40.22 to designate the stage of glaucoma

7th character required

• 0 — stage unspecified
• 1 — mild stage
• 2 — moderate stage
• 3 — severe stage
• 4 — indeterminate stage

Applies from H40 Glaucoma

Excludes1 (never code together)

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

Applies from H40.2 Primary angle-closure glaucoma

Excludes1 (never code together)

• aqueous misdirection (H40.83-)
• malignant glaucoma (H40.83-)

Codes under H40.22

• H40.221 Chronic angle-closure glaucoma, right eye
• H40.222 Chronic angle-closure glaucoma, left eye
• H40.223 Chronic angle-closure glaucoma, bilateral
• H40.229 Chronic angle-closure glaucoma, unspecified eye

Code annotations containing back-references to H40.22

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)")

Diagnosis Index entries for H40.22

• Glaucoma › angle-closure (primary) › chronic
• Plateau iris syndrome (post-iridectomy) (postprocedural) (without glaucoma) › with glaucoma

Nearby codes

• H40.21 Acute angle-closure glaucoma
• H40.211 Acute angle-closure glaucoma, right eye
• H40.212 Acute angle-closure glaucoma, left eye
• H40.213 Acute angle-closure glaucoma, bilateral
• H40.219 Acute angle-closure glaucoma, unspecified eye
• H40.22 Chronic angle-closure glaucoma (this code)
• H40.221 Chronic angle-closure glaucoma, right eye
• H40.2210 Chronic angle-closure glaucoma, right eye, stage unspecified
• H40.2211 Chronic angle-closure glaucoma, right eye, mild stage
• H40.2212 Chronic angle-closure glaucoma, right eye, moderate stage
• H40.2213 Chronic angle-closure glaucoma, right eye, severe stage