Is H20.039 a billable ICD-10-CM code?

Yes. H20.039 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does H20.039 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 H20.039?

H20.039 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above H20.039 (H20.0) and apply to it just the same.

H20.039

H20.039 — Secondary infectious iridocyclitis, unspecified eye

Billable / specific codeICD-10-CMunspecified

H20.039 is a billable, specific ICD-10-CM code for secondary infectious iridocyclitis, unspecified eye. It is valid for submission on a claim.

Excludes1 inherited from the categories above H20.039

These are not written on H20.039, but they bind it: a note on a category applies to every code beneath it. Billing H20.039 with anything listed here is a denial.

Written on H20.0 — Acute and subacute iridocyclitis

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)

Risk adjustment

H20.039 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.

Medicare coverage

H20.039 is named in 2 Medicare coverage policies — 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A52423Billing and Coding: Infliximab and biosimilars
A57637Billing and Coding: Visual Field Examination

Code history

H20.039 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share H20.03. If H20.039 is not quite right, the correct code is usually one of these.

Questions about H20.039

Is H20.039 a billable ICD-10-CM code?: Yes. H20.039 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does H20.039 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 H20.039?: H20.039 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above H20.039 (H20.0) and apply to it just the same.