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    v1.0.28
    OpenPayerBilling CodesDisorders of sclera, cornea, iris and ciliary bodyICD-10-CM h21-other-disorders-of-iris
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    ICD-10-CM Code For Other Disorders Of Iris And Ciliary Body: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group H21 includes disorders of the iris and ciliary body such as iridocyclitis, atrophy, adhesions, and other structural or inflammatory conditions affecting the anterior uveal tract. These ICD-10-CM diagnosis codes are used to document clinical scenarios involving anterior uveal inflammation, structural damage, or dysfunction that may impact vision, intraocular pressure, or ocular anatomy. Accurate coding within the ICD-10-CM H21 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM H21: Other Disorders Of Iris And Ciliary Body Overview

    The ICD-10-CM H21 group covers conditions affecting the iris and ciliary body of the eye, including structural, inflammatory, and degenerative disorders. These diagnoses target the anterior uveal tract and can affect vision, intraocular pressure, and ocular comfort. Accurate coding matters for proper reimbursement because it captures the specific site and nature of the disorder, supporting medical necessity and claim adjudication.

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    When to Use

    Use a code from this group when documenting primary diagnoses that specifically involve the iris or ciliary body such as iridocyclitis, posterior synechiae, or ciliary body disorders. These codes apply when clinical findings, examination, or diagnostic testing localize pathology to the anterior uveal structures and are the focus of care.

    ICD-10-CM Codes

    97 rows

    ICD-10-CM CodeDescription
    H21.00Hyphema, unspecified eye
    H21.01Hyphema, right eye
    H21.02Hyphema, left eye
    H21.03Hyphema, bilateral
    H21.1X1Other vascular disorders of iris and ciliary body, right eye
    H21.1X2Other vascular disorders of iris and ciliary body, left eye
    H21.1X3Other vascular disorders of iris and ciliary body, bilateral
    H21.1X9Other vascular disorders of iris and ciliary body, unspecified eye
    H21.211Degeneration of chamber angle, right eye
    H21.212Degeneration of chamber angle, left eye
    H21.213Degeneration of chamber angle, bilateral
    H21.219Degeneration of chamber angle, unspecified eye
    H21.221Degeneration of ciliary body, right eye
    H21.222Degeneration of ciliary body, left eye
    H21.223Degeneration of ciliary body, bilateral
    H21.229Degeneration of ciliary body, unspecified eye
    H21.231Degeneration of iris (pigmentary), right eye
    H21.232Degeneration of iris (pigmentary), left eye
    H21.233Degeneration of iris (pigmentary), bilateral
    H21.239Degeneration of iris (pigmentary), unspecified eye

    Showing 1–20 of 97

    DRG Codes

    4 rows

    DRG CodeDescription
    121Acute Major Eye Infections with CC/MCC
    122Acute Major Eye Infections without CC/MCC
    124Other Disorders of the Eye with MCC or Thrombolytic Agent
    125Other Disorders of the Eye without MCC

    Typical Clinical Scenarios

    • An elderly patient presents to the ophthalmology clinic with gradually worsening photophobia, blurred vision and irregular pupils after a history of uveitis and multiple prior intraocular surgeries. Examination shows corectopia and posterior synechiae with sectoral iris atrophy; a diagnosis from this group is assigned to capture chronic sequelae affecting the iris anatomy. Typical codes: H21.1X3, H21.239
    • A middle-aged patient arrives at the emergency department with acute eye pain, decreased vision, and a mid-dilated nonreactive pupil after blunt ocular trauma sustained in a motor vehicle collision. Imaging and slit-lamp exam reveal traumatic mydriasis with iris sphincter tear and associated contusion of the ciliary body, necessitating an acute diagnosis from this group for traumatic iris/ciliary body injury. Typical codes: H21.00, H21.02
    • A young adult with a history of congenital anterior segment abnormalities is seen for routine follow-up with glare, irregular astigmatism, and documented coloboma of the iris affecting the visual axis; the visit documents a stable congenital defect and refractive management. A code from this group is used to identify the congenital iris malformation as a chronic comorbidity affecting eye care. Typical codes: H21.301, H21.309

    Related Codes

    H15-DISORDERS-OF-SCLERA

    ICD-10-CM Code For Disorders Of Sclera: Group Overview

    H16-KERATITIS-CORNEAL-DISORDERS

    ICD-10-CM Code For Keratitis: Group Overview

    H17-CORNEAL-SCARS-AND-OPACITIES

    ICD-10-CM Code For Corneal Scars And Opacities: Group Overview

    H18-OTHER-DISORDERS-OF-CORNEA

    ICD-10-CM Code For Other Disorders Of Cornea: Group Overview

    H20-IRIDOCYCLITIS

    ICD-10-CM Code For Iridocyclitis: Group Overview

    H22-DISORDERS-OF-IRIS-AND-CILIARY-BODY

    ICD-10-CM Code For Disorders Of Iris And Ciliary Body In Diseases Classified Elsewhere: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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