H21.552 ICD-10-CM Code: Recession of chamber angle, left eye

H21.552 is the ICD-10-CM diagnosis code for recession of chamber angle, left eye. A condition where the angle between the iris and cornea in the left eye becomes narrower or recessed, potentially affecting fluid drainage in the eye. H21.552 sits in the ICD-10-CM chapter for diseases of the eye and adnexa (h00-h59), within the section covering disorders of sclera, cornea, iris and ciliary body (h15-h22).

H21.552 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.

Chamber angle recession is often associated with glaucoma risk; review documentation for any glaucoma diagnosis codes.