H20.0

Non-billable

Acute and subacute iridocyclitis

H20.0 is the ICD-10-CM code for Acute and subacute iridocyclitis. It is a non-billable category code — use a more specific child code such as H20.00 for billing.

Status
Header (non-billable)
Chapter
H00-H59
Parent
H20
Subcodes
6
Edition
FY2026

H00-H59 Diseases of the eye and adnexa

Includes

  • Acute anterior uveitis
  • Acute cyclitis
  • Acute iritis
  • Subacute anterior uveitis
  • Subacute cyclitis
  • Subacute iritis

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)

Frequently asked questions

What is ICD-10 code H20.0?
H20.0 is the ICD-10-CM code for "Acute and subacute iridocyclitis". It falls under H00-H59 Diseases of the eye and adnexa.
Is H20.0 a billable code?
No — H20.0 is a non-billable header code. Use a more specific child code (such as H20.00) for billing.
What are the subcodes of H20.0?
H20.0 has 6 more specific child codes, including H20.00, H20.01, H20.02.
What is excluded from H20.0?
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).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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