H40
Non-billableGlaucoma
Glaucoma
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •diabetes mellitus related eye conditions, , ,E09.3, E10.3, E11.3, E13.3
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury (trauma) of eye and orbitS05
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •syphilis related eye disorders, , ,A50.01, A50.3, A51.43, A52.71
Child Codes (9)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(9)
Frequently Asked Questions
What is the ICD-10 code for glaucoma?
The ICD-10-CM code for glaucoma is H40. The full clinical description is "Glaucoma". H40 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code H40 mean?
ICD-10-CM code H40 represents “Glaucoma”. It is classified under Chapter 7: Diseases of the Eye and Adnexa and is a non-billable header code. Use a more specific child code for billing purposes.
Is H40 a billable code?
No, H40 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 9 child codes under H40.
What chapter is H40 in?
H40 is in Chapter 7: Diseases of the Eye and Adnexa (codes H00-H59).
What codes cannot be used with H40?
H40 has Excludes1 notes indicating codes that cannot be used together with it, including: absolute glaucoma (H44.51-); congenital glaucoma (Q15.0); traumatic glaucoma due to birth injury (P15.3).
What are the subcategories under H40?
H40 has 9 child codes, including: H40.0 (Glaucoma suspect), H40.1 (Open-angle glaucoma), H40.2 (Primary angle-closure glaucoma), H40.3 (Glaucoma secondary to eye trauma), and 5 more.
What are the UMLS CUIs for H40?
H40 is linked to 1 UMLS Concept Unique Identifier: C0017601. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does H40 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like glaucoma affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of H40?
H40 maps to the ICD-11 code: 9C6Z (Glaucoma or glaucoma suspect, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.