H00.036 ICD-10-CM Code: Abscess of eyelid left eye, unspecified eyelid

H00.036 is the ICD-10-CM diagnosis code for abscess of eyelid left eye, unspecified eyelid. An abscess (collection of pus) on the left eyelid that has not been specified as affecting the upper or lower lid. This is a localized infection that causes swelling, redness, and tenderness on the eyelid. H00.036 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering disorders of eyelid, lacrimal system and orbit (h00-h05).

H00.036 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.

Verify documentation specifies the left eye; if the eyelid location (upper vs. lower) is documented, use the more specific code (H00.031 for upper or H00.032 for lower).