H18.001 Unspecified corneal deposit, right eye

ICD-10-CM H18.001: Unspecified corneal deposit, right eye

ICD-10-CM code H18.001 designates an unspecified corneal deposit located in the right eye, classified as a disease or syndrome. It falls under the broader parent category of unspecified corneal deposits. This code appears in official terminology records and Medicare billing articles, though its presence does not guarantee coverage. 1 3

Plain-language overview

Code H18.001 identifies a health condition categorized as a disease or syndrome involving an unspecified deposit in the right cornea, providing a standardized diagnostic label for clinical documentation. 1

What this code represents

The terminology record for H18.001 establishes the official preferred name as Unspecified corneal deposit, right eye, and confirms the record is active for the 2026 version of ICD-10-CM. 1

H18.001 is a narrower concept under the parent code H18.00, which represents an unspecified corneal deposit without specifying the affected eye or laterality. 1

Coding details

The code H18.001 is listed alongside H18.002 and H18.003 to distinguish right eye, left eye, and bilateral unspecified corneal deposits within the ICD-10-CM coding structure. 3 4

Within the corneal disorder category, H18.001 is distinct from other right eye conditions such as H18.021, which specifies argentous corneal deposits rather than an unspecified deposit. 4

Documentation considerations

Clinical documentation for H18.001 designates the right eye for an unspecified corneal deposit, distinguishing it from the unspecified eye and bilateral alternatives listed in the coding structure. 3 4

Coverage and utilization context

A Medicare billing article includes H18.001 in a range of codes for unspecified corneal deposits, grouping it with related bilateral and unspecified eye conditions for operational billing specifications. 3

What the sources add

While the official terminology record defines the diagnostic label and hierarchy, the Medicare article provides operational context by grouping H18.001 with related bilateral and unspecified corneal deposit codes. 1 3

A clinical research source discusses corneal opacity and fibrosis as causes of blindness, but it does not define the specific diagnostic parameters or clinical criteria for code H18.001. 2

Sources

1. ICD-10-CM H18.001 terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Topical losartan for established corneal fibrosis with machine learning-based predictors — pmc.ncbi.nlm.nih.gov; accessed 2026-07-27.
3. Article - Billing and Coding: Ocular Photography - External (A57068) — cms.gov; accessed 2026-07-27.
4. ICD-10-CM 2024 | H18 - Other disorders of cornea — unboundmedicine.com; accessed 2026-07-27.