ICD-10-CM Code H40.42
Glaucoma secondary to eye inflammation, left eye
Non-Billable Code
Non-Billable means the code is not sufficient justification for admission to an acute care hospital when used a principal diagnosis. Use a child code to capture more detail.7th Character Required
Code requires 7th Character Extension identifier. This 7th Character usually captures Episode of Care information, such as "Initial Encounter," "Subsquent Encounter," or "Sequela."ICD Code H40.42 is a non-billable code. To code a diagnosis of this type, you must use specify a 7th character that describes the diagnosis 'glaucoma secondary to eye inflammation, left eye' in more detail. The 7th characters that can be added, and the resulting billable codes, are as follows:
7th Digit | Billable Code | 7th Digit Specifies |
---|---|---|
0 | H40.42X0 | stage unspecified |
1 | H40.42X1 | mild stage |
2 | H40.42X2 | moderate stage |
3 | H40.42X3 | severe stage |
4 | H40.42X4 | indeterminate stage |
What is 7th Character Extension?
For codes less than 6 characters that require a 7th character a placeholder 'X' should be assigned for all characters less than 6. The 7th character must always be the 7th position of a code. E.g. The ICD-10-CM code T67.4 (Heat exhaustion due to salt depletion) requires an Episode of Care identifier. T67.4XXA Initial Encounter or T67.4XXD Subsequent Encounter. More InfoThe 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.
Parent Code: H40.4 - Glaucoma secondary to eye inflammation