Postproc hematoma of skin, subcu following other procedure

This code signifies a localized collection of blood outside of blood vessels, occurring in the skin or subcutaneous layers, that develops as a direct complication after a surgical or invasive procedure other than a cardiovascular or nervous system procedure. It represents a post-operative bleeding event manifesting as a palpable mass or discoloration beneath the skin.

Use this code when documentation clearly indicates a hematoma of the skin or subcutaneous tissue that arose as a direct consequence of a recent surgical or invasive procedure (e.g., biopsy, incision and drainage, excisional surgery) not involving the cardiovascular or nervous systems. The physician's notes should explicitly state the presence of a hematoma and its postprocedural etiology.

• Always sequence this code after the code for the underlying complication (e.g., T81.0x for hemorrhage/hematoma complicating a procedure) or the primary reason for the encounter if the hematoma is the main focus of treatment.
• Distinguish from hematomas due to trauma (S00-S99 codes) or spontaneous hematomas, which are not postprocedural.
• Ensure the documentation specifies "skin and subcutaneous tissue" to avoid confusion with deeper hematomas.