Is H10.33 a billable ICD-10-CM code?

Yes. H10.33 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does H10.33 sit in the tabular list?

Diseases of the eye and adnexa (H00-H59), in the block Disorders of conjunctiva (H10-H11).

What cannot be coded together with H10.33?

H10.33 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 H10.33 (H10.3, H10) and apply to it just the same.

H10.33

H10.33 — Unspecified acute conjunctivitis, bilateral

Billable / specific codeICD-10-CMbilateral

H10.33 is a billable, specific ICD-10-CM code for unspecified acute conjunctivitis, bilateral. It is valid for submission on a claim.

Excludes1 inherited from the categories above H10.33

These are not written on H10.33, but they bind it: a note on a category applies to every code beneath it. Billing H10.33 with anything listed here is a denial.

Written on H10.3 — Unspecified acute conjunctivitis

ophthalmia neonatorum NOS (P39.1)

Written on H10 — Conjunctivitis

keratoconjunctivitis (H16.2-)

Risk adjustment

H10.33 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

H10.33 is named in 3 Medicare coverage policies — 3 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A57068Billing and Coding: Ocular Photography - External
A57473Billing and Coding: Allergy Testing
A57473Billing and Coding: Allergy Testing

Code history

H10.33 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 H10.3. If H10.33 is not quite right, the correct code is usually one of these.

Questions about H10.33

Is H10.33 a billable ICD-10-CM code?: Yes. H10.33 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does H10.33 sit in the tabular list?: Diseases of the eye and adnexa (H00-H59), in the block Disorders of conjunctiva (H10-H11).
What cannot be coded together with H10.33?: H10.33 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 H10.33 (H10.3, H10) and apply to it just the same.