E89.822 ICD-10-CM Code: Postprocedural seroma of an endocrine system organ or structure following an endocrine system procedure

E89.822 is the ICD-10-CM diagnosis code for postprocedural seroma of an endocrine system organ or structure following an endocrine system procedure. A seroma (collection of fluid) that develops after surgery on an endocrine gland or related structure, such as the thyroid, parathyroid, or adrenal glands. This is a complication that occurs as a result of the surgical procedure itself. E89.822 sits in the ICD-10-CM chapter for endocrine, nutritional and metabolic diseases (e00-e89), within the section covering postprocedural endocrine and metabolic complications and disorders, not elsewhere classified (e89).

E89.822 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.

This code requires documentation of both the seroma AND confirmation that it occurred following an endocrine system procedure to distinguish it from seromas at other body sites.