ICD-10-CM > K00-K95 > K90-K95 > K91 > K91.3 K91.3 Postprocedural intestinal obstruction Non-Billable/Non-Specific Codes K91.30Postprocedural intestinal obstruction, unspecified as to partial versus completeK91.31Postprocedural partial intestinal obstructionK91.32Postprocedural complete intestinal obstruction