H40.42 Glaucoma secondary to eye inflammation, left eye

Non-billable ICD-10-CM code.

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 H40.4 Glaucoma secondary to eye inflammation

Code also

• underlying condition

7th character note

• One of the following 7th characters is to be assigned to each code in subcategory H40.4 to designate the stage of glaucoma

7th character required

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

Code annotations containing back-references to H40.42

Back-references to H40.4

• Type 2 Excludes: H20.8 Other iridocyclitis ("glaucomatocyclitis crises (H40.4-)")

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

• H40.41X0 Glaucoma secondary to eye inflammation, right eye, stage unspecified
• H40.41X1 Glaucoma secondary to eye inflammation, right eye, mild stage
• H40.41X2 Glaucoma secondary to eye inflammation, right eye, moderate stage
• H40.41X3 Glaucoma secondary to eye inflammation, right eye, severe stage
• H40.41X4 Glaucoma secondary to eye inflammation, right eye, indeterminate stage
• H40.42 Glaucoma secondary to eye inflammation, left eye (this code)
• H40.42X0 Glaucoma secondary to eye inflammation, left eye, stage unspecified
• H40.42X1 Glaucoma secondary to eye inflammation, left eye, mild stage
• H40.42X2 Glaucoma secondary to eye inflammation, left eye, moderate stage
• H40.42X3 Glaucoma secondary to eye inflammation, left eye, severe stage
• H40.42X4 Glaucoma secondary to eye inflammation, left eye, indeterminate stage