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H20.04

⚠ Non-billable (Header)

Secondary noninfectious iridocyclitis

Diseases of the eye and adnexa (H00-H59)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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❌ Excludes1

inherited

Rules inherited from parent codes in the hierarchy.

H20.0
  • • 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)

Child Codes (4)

H20.041Secondary noninfectious iridocyclitis, right eyeH20.042Secondary noninfectious iridocyclitis, left eyeH20.043Secondary noninfectious iridocyclitis, bilateralH20.049Secondary noninfectious iridocyclitis, unspecified eye

Clinical Description

ICD-10-CM code H20.04 represents secondary noninfectious iridocyclitis. This code falls under the Diseases of the eye and adnexa (H00-H59) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.

This is a 6-character code at the 5th level of specificity. There are 4 more specific child codes under H20.04. Coders should note that H20.04 has 11 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.

Frequently Asked Questions

What is ICD-10 code H20.04?

ICD-10-CM code H20.04 is "Secondary noninfectious iridocyclitis". It belongs to the category: Diseases of the eye and adnexa (H00-H59).

Is H20.04 a billable ICD-10 code?

No, H20.04 is a non-billable header code. A more specific child code must be used for billing.

What codes are excluded with H20.04?

H20.04 has 11 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.

Related Codes in H20.0

Other codes in the same category that may be relevant for differential coding:

H20.00Unspecified acute and subacute iridocyclitisH20.01Primary iridocyclitisH20.02Recurrent acute iridocyclitisH20.03Secondary infectious iridocyclitisH20.05Hypopyon

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Code Information

CodeH20.04
BillableNo — Header code
ParentH20.0
CategoryDiseases of the eye and adnexa (H00-H59)
Excludes111 rule(s)
Excludes20 note(s)
Child codes4

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)