ICD-10-CM Code H40.9
Unspecified glaucoma
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.H40.9 is a billable ICD code used to specify a diagnosis of unspecified glaucoma. A 'billable code' is detailed enough to be used to specify a medical diagnosis.
The ICD code H40 is used to code Glaucoma
Glaucoma is a group of eye diseases which result in damage to the optic nerve and vision loss. A major risk factor is increased pressure in the eye. The disorders can be roughly divided into two main categories: "open-angle" and "closed-angle" (or "angle closure") glaucoma. Open-angle chronic glaucoma is painless, tends to develop slowly over time and often has no symptoms until the disease has progressed significantly. Closed angle glaucoma is usually chronic and asymptomatic but can present all of a sudden as well. This involves sudden eye pain, blurred vision, mid-dilated pupil, redness, nausea and vomiting, resulting from a sudden spike in intraocular pressure from iridotrabecular contact. Glaucoma can permanently damage vision in the affected eye, first by decreasing peripheral vision (reducing the visual field), and then potentially leading to blindness if left untreated.
Specialty: | Ophthalmology |
MeSH Code: | D005901 |
ICD 9 Code: | 365 |
Acute angle closure glaucoma of the right eye. Note the mid-sized pupil, which was nonreactive to light, and redness of the conjunctiva.
MS-DRG Mapping
- DRG Group #124-125 - Other disorders of the eye with MCC.
- DRG Group #124-125 - Other disorders of the eye without MCC.
Related Concepts SNOMET-CT
- Glaucoma due to type 2 diabetes mellitus (disorder)
ICD-10-CM Alphabetical Index References for 'H40.9 - Unspecified glaucoma'
The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code H40.9. Click on any term below to browse the alphabetical index.
Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)
This is the official exact match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that in all cases where the ICD9 code 365.9 was previously used, H40.9 is the appropriate modern ICD10 code.
Parent Code: H40 - Glaucoma