What H22 covers · when clinicians use it
ICD-10 code H22 identifies Disorders of iris and ciliary body in diseases classified elsewhere in the U.S. ICD-10-CM clinical and billing record set. It sits within the Eye and Adnexa chapter (H00–H59), the section that groups related diagnoses so providers, payers, and public-health agencies report them consistently. Clinicians and medical coders apply H22 when an encounter's findings match the Disorders of iris and ciliary body in diseases classified elsewhere description, attaching it to the patient record so downstream insurance claims, payer audits, quality reporting, and epidemiological surveillance all reference the same standardized diagnosis. The ICD-10-CM is maintained by the Centers for Medicare & Medicaid Services and the CDC's National Center for Health Statistics, with an updated official code set released each U.S. fiscal year — always verify H22 against the current CMS/CDC release and your payer's documentation guidance before final use. This page summarizes documentation context for H22 and is a coding reference, not clinical, diagnostic, or billing advice.
H22 refers to Disorders of iris and ciliary body in diseases classified elsewhere, a set of eye conditions affecting the sclera, cornea, iris, or ciliary body. These structures are essential for protecting the eye and maintaining vision, and disorders here often lead to inflammation, scarring, or visual distortion.
Symptoms
- Eye redness and pain – Common in keratitis (H16) and scleritis (H15)
- Blurred or decreased vision – Especially in H17 corneal scars and H18 corneal dystrophies
- Photophobia – Light sensitivity in iritis and keratouveitis (H20)
- Tearing and discharge – Found in infectious keratitis or corneal ulcers
- Visible opacities or white spots – Seen in corneal scarring or degenerations
- Eye pressure sensation – Often related to inflammation of the ciliary body
- Inflammation secondary to systemic disease – Seen in H22 (e.g., from sarcoidosis or RA)
Diagnosis
Diagnosis of Disorders of iris and ciliary body in diseases classified elsewhere involves slit-lamp biomicroscopy, corneal staining, intraocular pressure measurement, anterior chamber exam, and in some cases, laboratory tests or imaging to rule out systemic inflammatory or autoimmune causes.
ICD10 Code Usage
ICD10 code H22 is used in ophthalmology, rheumatology, emergency medicine, and primary care. It assists in documentation for vision-threatening anterior segment disorders, treatment justification, surgery planning (e.g., corneal transplant), and systemic disease monitoring.
Related Codes
- H15 – Disorders of sclera
- H16 – Keratitis
- H17 – Corneal scars and opacities
- H18 – Other disorders of cornea
- H20 – Iridocyclitis
- H21 – Other disorders of iris and ciliary body
FAQs
Q1: What is ICD10 code H22?
A: It refers to Disorders of iris and ciliary body in diseases classified elsewhere, affecting the sclera, cornea, iris, or ciliary body—parts critical to vision and eye structure.
Q2: Are these conditions vision-threatening?
A: Yes, if untreated, especially keratitis, iridocyclitis, and corneal scars can cause permanent vision loss or complications.
Q3: What causes these disorders?
A: Causes include infections, trauma, autoimmune disease, surgery, or congenital conditions.
Q4: What are typical treatments?
A: Antibiotic or steroid eye drops, immunosuppressive agents, lubricants, or surgical procedures such as corneal grafting or synechiae lysis.
Q5: Who manages these disorders?
A: Ophthalmologists, corneal specialists, and systemic disease physicians like rheumatologists if associated with autoimmune disease.
Conclusion
ICD10 code H22 enables proper classification and care of Disorders of iris and ciliary body in diseases classified elsewhere, facilitating timely treatment and protecting vision through early recognition and management of anterior segment disorders.