ICD-10-CM Diagnosis Code (2025)
Official Description for H40.1
Open-angle glaucoma
Coding Notes & Guidelines for H40.1
Chronic simple glaucoma
One of the following 7th characters is to be assigned to code H40.10 to designate the stage of glaucoma
One of the following 7th characters is to be assigned to each code in subcategory H40.11 to designate the stage of glaucoma
One of the following 7th characters is to be assigned to each code in subcategory H40.12 to designate the stage of glaucoma
One of the following 7th characters is to be assigned to each code in subcategory H40.13 to designate the stage of glaucoma
One of the following 7th characters is to be assigned to each code in subcategory H40.14 to designate the stage of glaucoma
Parent Code (Less Specific):
About ICD-10-CM Code H40.1 (Open-angle glaucoma)
ICD-10-CM code H40.1 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM H40.1 became effective on October 1, 2024.
This page provides detailed information about H40.1 - Open-angle glaucoma. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Open-angle glaucoma.