Iridocyclitis (H20) ICD-10-CM
The H20 code range covers iridocyclitis with 50 ICD-10-CM diagnosis codes. 38 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Codes in the H20 Range 50 codes · 38 billable
- H20 IridocyclitisNon-billable
- H20.0 Acute and subacute iridocyclitisNon-billable
- H20.00 Unspecified acute and subacute iridocyclitis
- H20.01 Primary iridocyclitisNon-billable
- H20.011 Primary iridocyclitis, right eye
- H20.012 Primary iridocyclitis, left eye
- H20.013 Primary iridocyclitis, bilateral
- H20.019 Primary iridocyclitis, unspecified eye
- H20.02 Recurrent acute iridocyclitisNon-billable
- H20.021 Recurrent acute iridocyclitis, right eye
- H20.022 Recurrent acute iridocyclitis, left eye
- H20.023 Recurrent acute iridocyclitis, bilateral
- H20.029 Recurrent acute iridocyclitis, unspecified eye
- H20.03 Secondary infectious iridocyclitisNon-billable
- H20.031 Secondary infectious iridocyclitis, right eye
- H20.032 Secondary infectious iridocyclitis, left eye
- H20.033 Secondary infectious iridocyclitis, bilateral
- H20.039 Secondary infectious iridocyclitis, unspecified eye
- H20.04 Secondary noninfectious iridocyclitisNon-billable
- H20.041 Secondary noninfectious iridocyclitis, right eye
- H20.042 Secondary noninfectious iridocyclitis, left eye
- H20.043 Secondary noninfectious iridocyclitis, bilateral
- H20.049 Secondary noninfectious iridocyclitis, unspecified eye
- H20.05 HypopyonNon-billable
- H20.051 Hypopyon, right eye
- H20.052 Hypopyon, left eye
- H20.053 Hypopyon, bilateral
- H20.059 Hypopyon, unspecified eye
- H20.1 Chronic iridocyclitisNon-billable
- H20.10 Chronic iridocyclitis, unspecified eye
- H20.11 Chronic iridocyclitis, right eye
- H20.12 Chronic iridocyclitis, left eye
- H20.13 Chronic iridocyclitis, bilateral
- H20.2 Lens-induced iridocyclitisNon-billable
- H20.20 Lens-induced iridocyclitis, unspecified eye
- H20.21 Lens-induced iridocyclitis, right eye
- H20.22 Lens-induced iridocyclitis, left eye
- H20.23 Lens-induced iridocyclitis, bilateral
- H20.8 Other iridocyclitisNon-billable
- H20.81 Fuchs' heterochromic cyclitisNon-billable
- H20.811 Fuchs' heterochromic cyclitis, right eye
- H20.812 Fuchs' heterochromic cyclitis, left eye
- H20.813 Fuchs' heterochromic cyclitis, bilateral
- H20.819 Fuchs' heterochromic cyclitis, unspecified eye
- H20.82 Vogt-Koyanagi syndromeNon-billable
- H20.821 Vogt-Koyanagi syndrome, right eye
- H20.822 Vogt-Koyanagi syndrome, left eye
- H20.823 Vogt-Koyanagi syndrome, bilateral
- H20.829 Vogt-Koyanagi syndrome, unspecified eye
- H20.9 Unspecified iridocyclitis
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the H20 range.
Chronic Iridocyclitis
Uveitis that is usually insidious in onset, bilateral, and can be asymptomatic, most often affecting the anterior uveal tract, including the iris and ciliary body, and can result in long-term complications. It is most commonly associated with certain forms of juvenile idiopathic arthritis, but may occur independent of arthritis.
Hypopyon
An accumulation of pus in the anterior chamber of the eye.
Iridocyclitis
Acute or chronic inflammation of the iris and ciliary body characterized by exudates into the anterior chamber, discoloration of the iris, and constricted, sluggish pupil. Symptoms include radiating pain, photophobia, lacrimation, and interference with vision.
About the H20 Code Range
Iridocyclitis is inflammation of the iris and ciliary body in the eye.
H20.0 groups acute and subacute forms, distinguishing primary, recurrent acute, secondary infectious, secondary noninfectious, and hypopyon entries. H20.1 covers chronic iridocyclitis, while H20.2 identifies lens-induced iridocyclitis. H20.8 groups other forms, including named conditions, and H20.9 is unspecified iridocyclitis. Most detailed subdivisions distinguish the right eye, left eye, both eyes, or an unspecified eye.
Questions About This Page
How many billable codes are in the H20 range?
Of the 50 codes in this range, 38 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the H20 range classify?
The range classifies iridocyclitis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
