All ICD10 Codes
H22Billable, valid for claims from October 1, 2026

Disorders of iris and ciliary body in diseases classified elsewhere

In Disorders of sclera, cornea, iris and ciliary body (H15-H22), chapter 7: Diseases of the Eye and Adnexa

  • H22 is billable and valid on claims for FY 2027. If the record has more detail, check the other codes under H15-H22 below.
  • As a secondary diagnosis it is not a CC or MCC, so it doesn't raise the MS-DRG payment.
  • Doesn't count toward a Medicare Advantage risk score (no HCC in V28).
  • AHRQ's Chronic Condition Indicator classes it as not chronic (an acute or short-term condition).
  • Can't be the principal diagnosis: code the underlying condition first. (Manifestation list)

Also indexed as: Disorder, iris, in diseases classified elsewhere

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Instructional notes

Code first: code the underlying condition first, then this code

  • underlying disease, such as:
  • gout (M1A.-, M10.-)
  • leprosy (A30.-)
  • parasitic disease (B89)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers coding glaucoma by type, eye, and stage, including bilateral cases and stage changes, and coding blindness or low vision when the impairment category is undocumented.

Read Section I.C.7 (page 48)

Other codes under H15-H22

Disorders of sclera, cornea, iris and ciliary body (H15-H22)

H22 MS-DRGs

As the principal diagnosis, H22 groups to MS-DRG 124 or 125 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

Related conditions

Grouped by AHRQ's Clinical Classifications Software Refined (CCSR), which sorts every diagnosis code into clinically meaningful categories.

H22 is in Other specified eye disorders (EYE012), with 280 codes. Others in it:

  • A18.50 Tuberculosis of eye, unspecified
  • A18.54 Tuberculous iridocyclitis
  • A18.59 Other tuberculosis of eye
  • A21.1 Oculoglandular tularemia
  • A50.01 Early congenital syphilitic oculopathy
  • A50.30 Late congenital syphilitic oculopathy, unspecified
  • A50.39 Other late congenital syphilitic oculopathy
  • A51.43 Secondary syphilitic oculopathy

Medicare coverage articles listing H22

These 9 Medicare billing and coding articles list H22 as a diagnosis that supports medical necessity for the services they cover. From the CMS Medicare Coverage Database; check your own contractor's article before billing.

Other codes that refer to H22

Notes on these codes point to H22.

  • M10 Use Additional Code: Disorders of iris and ciliary body in diseases classified elsewhere (H22)
  • M1A Use Additional Code: Disorders of iris and ciliary body in diseases classified elsewhere (H22)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Eye Diseases

Even if your eyes feel healthy, you could have a problem and not know it. That's why regular eye exams are so important. Refractive errors are the most common type of vision problem that makes it hard to see clearly. But some eye conditions or diseases don't have any symptoms and can lead to a permanent loss of vision.

Read more about eye diseases on MedlinePlus

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.

ICD-9-CM equivalent

Legacy crosswalk from the CMS General Equivalence Mappings (last updated 2018).

  • 364.89 Other disorders of iris and ciliary body (approximate)
ICD-9 to ICD-10 converter