As of October 2015, ICD-9 codes are no longer used for medical coding. Instead, use this equivalent ICD-10-CM code, which is an approximate match to ICD-9 code 365.04:
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
365.04 is a legacy non-billable code used to specify a medical diagnosis of ocular hypertension. This code was replaced on September 30, 2015 by its ICD-10 equivalent.
References found for the code 365.04 in the Index of Diseases and Injuries:
Some eye problems are minor and don't last long. But some can lead to a permanent loss of vision.
General Equivalence Map Definitions The ICD-9 and ICD-10 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.