MCMedicalCodingSoftware
H10.4

H10.4: Chronic conjunctivitis

Non-billable headerICD-10-CM

H10.4 is a non-billable header ICD-10-CM code for chronic conjunctivitis. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above H10.4

A category’s note binds every code beneath it.

Written on H10: Conjunctivitis

  • keratoconjunctivitis (H16.2-)

Other codes that can never be billed with H10.4

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • H16.26Vernal keratoconjunctivitis, with limbar and corneal involvement

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 H10.4

6 child codes. Green means billable.

Other codes under H10

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.