Disorders of sclera, cornea, iris and ciliary body (H15-H22) ICD-10-CM
The H15–H22 section covers disorders of sclera, cornea, iris and ciliary body with 646 ICD-10-CM diagnosis codes, of which 497 are billable in fiscal year 2026. The section is organized into the 7 code ranges listed below.
Code Ranges in This Section 7 ranges · 646 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the H15–H22 Code Range
ICD-10 codes H15-H22 cover disorders affecting the sclera, cornea, iris, and ciliary body, key parts of the eye responsible for its shape, clarity, and function. These codes specify various inflammatory, degenerative, hereditary, and traumatic eye conditions with detailed subcodes for laterality and severity.
This range includes codes for scleritis (H15), an inflammation of the sclera, also known as scleral abscess or sclerouveitis, with distinctions like anterior, posterior, and scleromalacia perforans types. Keratitis (H16) covers corneal inflammation including corneal ulcers—such as Mooren's and mycotic ulcers—as well as keratoconjunctivitis types like exposure, sicca (dry eyes), and neurotrophic. Codes for corneal scars and opacities (H17) address leukoma and central corneal opacification that impair vision. Other corneal disorders (H18) include pigmentations, corneal dystrophies (like granular and lattice types), keratoconus, edema, and deformities. Iridocyclitis (H20) codes describe inflammation of the iris and ciliary body, including primary, recurrent, infectious, and noninfectious types, as well as conditions like Fuchs' heterochromic cyclitis. Lastly, H21 and H22 include other disorders of the iris and ciliary body such as hyphema (blood in the anterior chamber), vascular disorders, cysts, synechiae (iris adhesions), degeneration, and conditions secondary to systemic diseases like juvenile idiopathic arthritis. Including detailed laterality and severity modifiers, these codes assist in precise reporting of complex ocular pathologies.
Questions About This Page
How many codes are in the H15-H22 range?
The H15-H22 range contains 646 ICD-10-CM diagnosis codes in FY 2026. 497 of them are billable, and the rest are category headers that organize the section.
What conditions does H15-H22 cover?
The range covers disorders of sclera, cornea, iris and ciliary body. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
