K91.31 Postprocedural partial intestinal obstruction

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Postprocedural incomplete intestinal obstruction

Applies from K91 Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified

Excludes2 (not included here)

• complications of artificial opening of digestive system (K94.-)
• complications of bariatric procedures (K95.-)
• gastrojejunal ulcer (K28.-)
• postprocedural (radiation) retroperitoneal abscess (K68.11)
• radiation colitis (K52.0)
• radiation gastroenteritis (K52.0)
• radiation proctitis (K62.7)

MS-DRG index

Defines the logic of DRG(s) 388-390 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 997.49 Other digestive system complications (approximate)

Code annotations containing back-references to K91.31

Back-references to K91.3

• Type 1 Excludes: K56 Paralytic ileus and intestinal obstruction without hernia ("postprocedural intestinal obstruction (K91.3-)")

Back-references to K91

• Type 2 Excludes: T81 Complications of procedures, not elsewhere classified ("intraoperative and postprocedural complications of specific body system (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95, K91.-, L76.-, M96.-, N99.-)")

Diagnosis Index entries for K91.31

• Obstruction, obstructed, obstructive › intestine › postoperative › incomplete
• Obstruction, obstructed, obstructive › intestine › postoperative › partial

Nearby codes

• K91.0 Vomiting following gastrointestinal surgery
• K91.1 Postgastric surgery syndromes
• K91.2 Postsurgical malabsorption, not elsewhere classified
• K91.3 Postprocedural intestinal obstruction
• K91.30 Postprocedural intestinal obstruction, unspecified as to partial versus complete
• K91.31 Postprocedural partial intestinal obstruction (this code)
• K91.32 Postprocedural complete intestinal obstruction
• K91.5 Postcholecystectomy syndrome
• K91.6 Intraoperative hemorrhage and hematoma of a digestive system organ or structure complicating a procedure
• K91.61 Intraoperative hemorrhage and hematoma of a digestive system organ or structure complicating a digestive system procedure
• K91.62 Intraoperative hemorrhage and hematoma of a digestive system organ or structure complicating other procedure