ICD-10 Code K91.31 – Postprocedural partial intestinal obstruction (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K91.31 – Postprocedural partial intestinal obstruction
What it is
K91.31 identifies a partial intestinal blockage that occurs after a procedure or surgery. Use it when documentation shows postoperative or postprocedural obstruction that is not complete.
Clinical signs
Typical findings include abdominal distension, pain, nausea, vomiting, and reduced passage of stool or gas. Clinical features vary; refer to documentation.
When to use this code
Use K91.31 when the provider documents a partial bowel obstruction as a complication of a prior procedure, surgery, or intervention. It applies when the record links the obstruction to the procedure rather than to a preexisting intestinal disorder. Check documentation if the cause, timing, or degree of obstruction is unclear.
Do not use for
Do not use this code for complete intestinal obstruction or for obstruction unrelated to a procedure. If the chart does not support a postprocedural complication, check documentation for the correct diagnosis.
Coding tip
Confirm that the provider explicitly connects the obstruction to the prior procedure before assigning K91.31.