ICD-10-CM>K00-K95>K65-K6A>K68K68Disorders of retroperitoneumNon-Billable/Non-SpecificCodesK68.1Retroperitoneal abscessK68.11Postprocedural retroperitoneal abscessK68.12Psoas muscle abscessK68.19Other retroperitoneal abscessK68.2Retroperitoneal fibrosisK68.3Retroperitoneal hematomaK68.9Other disorders of retroperitoneum