Diagnosis Code H42
Information for Medical Professionals
The following edits are applicable to this code:
Manifestation diagnoses Manifestation diagnoses
Manifestation codes describe the manifestation of an underlying disease, not the disease itself, and therefore should not be used as a principal diagnosis.
Diagnostic Related Groups
The diagnosis code H42 is grouped in the following Diagnostic Related Group(s) (MS-DRG v33.0)
Convert to ICD-9 General Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.
- 365.44 - Glaucoma w systemic synd (approximate) Approximate Flag
The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
- Glaucoma associated with systemic syndromes
- Glaucoma associated with vascular disorder
- Glaucoma due to another disorder
- Glaucoma due to combination of mechanisms
- Glaucoma due to systemic syndrome
- Glaucoma in endocrine, nutritional and metabolic diseases
- Neovascular glaucoma
- Neovascular glaucoma due to diabetes mellitus
- Primary angle-closure glaucoma
- Primary glaucoma due to combination of mechanisms
- Rieger eye malformation sequence
- Secondary angle-closure glaucoma
- Secondary angle-closure glaucoma
Index of Diseases and Injuries
References found for the code H42 in the Index of Diseases and Injuries:
- Type 1 Excludes Notes: Type 1 Excludes Notes
A type 1 Excludes note is a pure excludes note. It means “NOT CODED HERE!” An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- glaucoma (in) onchocerciasis (B73.02)
- glaucoma (in) syphilis (A52.71)
- glaucoma (in) tuberculous (A18.59)
- Type 2 Excludes Notes: "And"
The word “and” should be interpreted to mean either “and” or “or” when it appears in a title.
- glaucoma (in) diabetes mellitus (E08.39, E09.39, E10.39, E11.39, E13.39)
- Code First: "Code first"
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a “use additional code” note at the etiology code, and a “code first” note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
- underlying condition, such as:
- amyloidosis (E85.-)
- aniridia (Q13.1)
- Lowe's syndrome (E72.03)
- Reiger's anomaly (Q13.81)
- specified metabolic disorder (E70-E88)
Information for Patients
Glaucoma is a group of diseases that can damage the eye's optic nerve. It is a leading cause of blindness in the United States. It usually happens when the fluid pressure inside the eyes slowly rises, damaging the optic nerve. Often there are no symptoms at first. Without treatment, people with glaucoma will slowly lose their peripheral, or side vision. They seem to be looking through a tunnel. Over time, straight-ahead vision may decrease until no vision remains.
A comprehensive eye exam can tell if you have glaucoma. People at risk should get eye exams at least every two years. They include
- African Americans over age 40
- People over age 60, especially Mexican Americans
- People with a family history of glaucoma
There is no cure, but glaucoma can usually be controlled. Early treatment can help protect your eyes against vision loss. Treatments usually include prescription eyedrops and/or surgery.
NIH: National Eye Institute
- Standard ophthalmic exam