ICD-10-CM H20: Iridocyclitis

ICD-10-CM Diagnosis Code (2025)

Official Description for H20

Iridocyclitis

Coding Notes & Guidelines for H20

Excludes1: Not Coded Here
  • iridocyclitis, iritis, uveitis (due to) (in) diabetes mellitus (E08-E13 with .39)
  • iridocyclitis, iritis, uveitis (due to) (in) diphtheria (A36.89)
  • iridocyclitis, iritis, uveitis (due to) (in) gonococcal (A54.32)
  • iridocyclitis, iritis, uveitis (due to) (in) herpes (simplex) (B00.51)
  • iridocyclitis, iritis, uveitis (due to) (in) herpes zoster (B02.32)
  • iridocyclitis, iritis, uveitis (due to) (in) late congenital syphilis (A50.39)
  • iridocyclitis, iritis, uveitis (due to) (in) late syphilis (A52.71)
  • iridocyclitis, iritis, uveitis (due to) (in) sarcoidosis (D86.83)
  • iridocyclitis, iritis, uveitis (due to) (in) syphilis (A51.43)
  • iridocyclitis, iritis, uveitis (due to) (in) toxoplasmosis (B58.09)
  • iridocyclitis, iritis, uveitis (due to) (in) tuberculosis (A18.54)
Excludes2: Not Included Here

posterior cyclitis (H30.2-)

Excludes2: Not Included Here
  • glaucomatocyclitis crises (H40.4-)
  • posterior cyclitis (H30.2-)
  • sympathetic uveitis (H44.13-)
Use Additional Code

code for any associated cataract (H26.21-)

Inclusion Terms
  • Acute anterior uveitis
  • Acute cyclitis
  • Acute iritis
  • Subacute anterior uveitis
  • Subacute cyclitis
  • Subacute iritis
Inclusion Terms

Uveitis NOS

Child Codes (More Specific Codes for H20):

H20.0 - Acute and subacute iridocyclitis H20.00 - Unspecified acute and subacute iridocyclitis H20.01 - Primary iridocyclitis 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 iridocyclitis 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 iridocyclitis 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 iridocyclitis 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 - Hypopyon H20.051 - Hypopyon, right eye H20.052 - Hypopyon, left eye H20.053 - Hypopyon, bilateral H20.059 - Hypopyon, unspecified eye H20.1 - Chronic iridocyclitis 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 iridocyclitis 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 iridocyclitis H20.81 - Fuchs' heterochromic cyclitis 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 syndrome 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

About ICD-10-CM Code H20 (Iridocyclitis)

ICD-10-CM code H20 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM H20 became effective on October 1, 2024.

This page provides detailed information about H20 - Iridocyclitis. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Iridocyclitis.