H10.21

H10.21: Acute toxic conjunctivitis

Non-billable headerICD-10-CM

H10.21 is a non-billable header ICD-10-CM code for acute toxic conjunctivitis. 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.

burn and corrosion of eye and adnexa (T26.-)

Code first

The underlying condition must be sequenced before this code.

(T51-T65) to identify chemical and intent

Inclusion terms

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

Acute chemical conjunctivitis

Excludes1 inherited from the categories above H10.21

A category’s note binds every code beneath it.

Written on H10: Conjunctivitis

keratoconjunctivitis (H16.2-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead H10.21

4 child codes. Green means billable.