ICD-10-CM category
H20: Iridocyclitis
Codes under H20 (Iridocyclitis). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| H20.0 | Acute and subacute iridocyclitis | — |
| H20.0 | Acute and subacute iridocyclitis | — |
| H20.00 | Unspecified acute and subacute iridocyclitis | ✓ |
| H20.00 | Unspecified acute and subacute iridocyclitis | ✓ |
| H20.01 | Primary iridocyclitis | — |
| H20.01 | Primary iridocyclitis | — |
| H20.1 | Chronic iridocyclitis | — |
| H20.1 | Chronic iridocyclitis | — |
| H20.02 | Recurrent acute iridocyclitis | — |
| H20.02 | Recurrent acute iridocyclitis | — |
| H20.2 | Lens-induced iridocyclitis | — |
| H20.2 | Lens-induced iridocyclitis | — |
| H20.03 | Secondary infectious iridocyclitis | — |
| H20.03 | Secondary infectious iridocyclitis | — |
| H20.04 | Secondary noninfectious iridocyclitis | — |
| H20.04 | Secondary noninfectious iridocyclitis | — |
| H20.05 | Hypopyon | — |
| H20.05 | Hypopyon | — |
| H20.8 | Other iridocyclitis | — |
| H20.8 | Other iridocyclitis | — |
| H20.9 | Unspecified iridocyclitis | ✓ |
| H20.9 | Unspecified iridocyclitis | ✓ |
| H20.10 | Chronic iridocyclitis, unspecified eye | ✓ |
| H20.10 | Chronic iridocyclitis, unspecified eye | ✓ |
| H20.011 | Primary iridocyclitis, right eye | ✓ |
| H20.011 | Primary iridocyclitis, right eye | ✓ |
| H20.11 | Chronic iridocyclitis, right eye | ✓ |
| H20.11 | Chronic iridocyclitis, right eye | ✓ |
| H20.012 | Primary iridocyclitis, left eye | ✓ |
| H20.012 | Primary iridocyclitis, left eye | ✓ |
| H20.12 | Chronic iridocyclitis, left eye | ✓ |
| H20.12 | Chronic iridocyclitis, left eye | ✓ |
| H20.013 | Primary iridocyclitis, bilateral | ✓ |
| H20.013 | Primary iridocyclitis, bilateral | ✓ |
| H20.13 | Chronic iridocyclitis, bilateral | ✓ |
| H20.13 | Chronic iridocyclitis, bilateral | ✓ |
| H20.019 | Primary iridocyclitis, unspecified eye | ✓ |
| H20.019 | Primary iridocyclitis, unspecified eye | ✓ |
| H20.20 | Lens-induced iridocyclitis, unspecified eye | ✓ |
| H20.20 | Lens-induced iridocyclitis, unspecified eye | ✓ |
| H20.021 | Recurrent acute iridocyclitis, right eye | ✓ |
| H20.021 | Recurrent acute iridocyclitis, right eye | ✓ |
| H20.21 | Lens-induced iridocyclitis, right eye | ✓ |
| H20.21 | Lens-induced iridocyclitis, right eye | ✓ |
| H20.022 | Recurrent acute iridocyclitis, left eye | ✓ |
| H20.022 | Recurrent acute iridocyclitis, left eye | ✓ |
| H20.22 | Lens-induced iridocyclitis, left eye | ✓ |
| H20.22 | Lens-induced iridocyclitis, left eye | ✓ |
| H20.023 | Recurrent acute iridocyclitis, bilateral | ✓ |
| H20.023 | Recurrent acute iridocyclitis, bilateral | ✓ |
| H20.23 | Lens-induced iridocyclitis, bilateral | ✓ |
| H20.23 | Lens-induced iridocyclitis, bilateral | ✓ |
| H20.029 | Recurrent acute iridocyclitis, unspecified eye | ✓ |
| H20.029 | Recurrent acute iridocyclitis, unspecified eye | ✓ |
| H20.031 | Secondary infectious iridocyclitis, right eye | ✓ |
| H20.031 | Secondary infectious iridocyclitis, right eye | ✓ |
| H20.032 | Secondary infectious iridocyclitis, left eye | ✓ |
| H20.032 | Secondary infectious iridocyclitis, left eye | ✓ |
| H20.033 | Secondary infectious iridocyclitis, bilateral | ✓ |
| H20.033 | Secondary infectious iridocyclitis, bilateral | ✓ |
| H20.039 | Secondary infectious iridocyclitis, unspecified eye | ✓ |
| H20.039 | Secondary infectious iridocyclitis, unspecified eye | ✓ |
| H20.041 | Secondary noninfectious iridocyclitis, right eye | ✓ |
| H20.041 | Secondary noninfectious iridocyclitis, right eye | ✓ |
| H20.042 | Secondary noninfectious iridocyclitis, left eye | ✓ |
| H20.042 | Secondary noninfectious iridocyclitis, left eye | ✓ |
| H20.043 | Secondary noninfectious iridocyclitis, bilateral | ✓ |
| H20.043 | Secondary noninfectious iridocyclitis, bilateral | ✓ |
| H20.049 | Secondary noninfectious iridocyclitis, unspecified eye | ✓ |
| H20.049 | Secondary noninfectious iridocyclitis, unspecified eye | ✓ |
| H20.051 | Hypopyon, right eye | ✓ |
| H20.051 | Hypopyon, right eye | ✓ |
| H20.052 | Hypopyon, left eye | ✓ |
| H20.052 | Hypopyon, left eye | ✓ |
| H20.053 | Hypopyon, bilateral | ✓ |
| H20.053 | Hypopyon, bilateral | ✓ |
| H20.059 | Hypopyon, unspecified eye | ✓ |
| H20.059 | Hypopyon, unspecified eye | ✓ |
| H20.81 | Fuchs' heterochromic cyclitis | — |
| H20.81 | Fuchs' heterochromic cyclitis | — |
| H20.82 | Vogt-Koyanagi syndrome | — |
| H20.82 | Vogt-Koyanagi syndrome | — |
| H20.811 | Fuchs' heterochromic cyclitis, right eye | ✓ |
| H20.811 | Fuchs' heterochromic cyclitis, right eye | ✓ |
| H20.812 | Fuchs' heterochromic cyclitis, left eye | ✓ |
| H20.812 | Fuchs' heterochromic cyclitis, left eye | ✓ |
| H20.813 | Fuchs' heterochromic cyclitis, bilateral | ✓ |
| H20.813 | Fuchs' heterochromic cyclitis, bilateral | ✓ |
| H20.819 | Fuchs' heterochromic cyclitis, unspecified eye | ✓ |
| H20.819 | Fuchs' heterochromic cyclitis, unspecified eye | ✓ |
| H20.821 | Vogt-Koyanagi syndrome, right eye | ✓ |
| H20.821 | Vogt-Koyanagi syndrome, right eye | ✓ |
| H20.822 | Vogt-Koyanagi syndrome, left eye | ✓ |
| H20.822 | Vogt-Koyanagi syndrome, left eye | ✓ |
| H20.823 | Vogt-Koyanagi syndrome, bilateral | ✓ |
| H20.823 | Vogt-Koyanagi syndrome, bilateral | ✓ |
| H20.829 | Vogt-Koyanagi syndrome, unspecified eye | ✓ |
| H20.829 | Vogt-Koyanagi syndrome, unspecified eye | ✓ |
Frequently asked questions
What is ICD-10-CM code H20?
H20 is an ICD-10-CM category covering Iridocyclitis. It contains 98 more specific diagnosis codes, 76 of which are billable.
Is H20 a billable code?
No — H20 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example H20.0 — Acute and subacute iridocyclitis). 76 of the 98 codes under H20 are billable.
What codes fall under H20?
H20 includes H20.0, H20.0, H20.00, H20.00, H20.01, plus 93 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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