Is H20.0 a billable ICD-10-CM code?

No. H20.0 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does H20.0 sit in the tabular list?

Diseases of the eye and adnexa (H00-H59), in the block Disorders of sclera, cornea, iris and ciliary body (H15-H22).

What cannot be coded together with H20.0?

H20.0 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.

H20.0

H20.0 — Acute and subacute iridocyclitis

Non-billable headerICD-10-CM

H20.0 is a non-billable header ICD-10-CM code for acute and subacute iridocyclitis. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

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)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

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

Risk adjustment

H20.0 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code history

H20.0 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead H20.0

6 child codes. Green means billable.

Related codes at this level

Codes that share H20. If H20.0 is not quite right, the correct code is usually one of these.

Questions about H20.0

Is H20.0 a billable ICD-10-CM code?: No. H20.0 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does H20.0 sit in the tabular list?: Diseases of the eye and adnexa (H00-H59), in the block Disorders of sclera, cornea, iris and ciliary body (H15-H22).
What cannot be coded together with H20.0?: H20.0 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.