H20.00 – Unspecified acute and subacute iridocyclitis

ICD-10-CM 2027 diagnosis code · Disorders of sclera, cornea, iris and ciliary body

Billable code

ICD-10-CM code H20.00
Code
H20.00 (claims format: H2000)
Description
Unspecified acute and subacute iridocyclitis
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
7. Diseases of the eye and adnexa (H00-H59)
Block
H15-H22 Disorders of sclera, cornea, iris and ciliary body
Parent codes
H20 › H20.0

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

H20.0 – Acute and subacute iridocyclitis

Applicable to:
  • 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)

Related codes in H20.0

Frequently asked questions

What is ICD-10 code H20.00?

H20.00 is the ICD-10-CM code for unspecified acute and subacute iridocyclitis, in the block H15-H22 (Disorders of sclera, cornea, iris and ciliary body).

Is H20.00 a billable code?

Yes. H20.00 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does H20.00 belong to?

It belongs to category H20 – Iridocyclitis.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.