H10.44 is the ICD-10-CM diagnosis code for vernal conjunctivitis. Vernal conjunctivitis is a seasonal allergic inflammation of the eye's outer membrane that typically occurs in warm weather and is more common in children and young adults. It causes itching, redness, and a thick discharge from the eyes. H10.44 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering disorders of conjunctiva (h10-h11).

H10.44 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

Vernal conjunctivitis is seasonal in nature—document the time of year or season when the condition occurs, as this helps distinguish it from other forms of conjunctivitis.