K91.2 Postsurgical malabsorption, not elsewhere classified

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

Applicable to

• Postsurgical blind loop syndrome

Excludes1 (never code together)

• malabsorption osteomalacia in adults (M83.2)
• malabsorption osteoporosis, postsurgical (M80.8-, M81.8)

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)

Risk adjustment (HCC)

• RxHCC V08: HCC 66 — Pancreatic Disorders and Intestinal Malabsorption, Except Pancreatitis

MS-DRG index

Defines the logic of DRG(s) 391-392 in MDC 06.

Approximate ICD-9-CM (GEMs)

• 579.3 Other and unspecified postsurgical nonabsorption

Code annotations containing back-references to K91.2

Back-references to K91.2

• Type 1 Excludes: K90 Intestinal malabsorption ("intestinal malabsorption following gastrointestinal surgery (K91.2)")
• Type 1 Excludes: K90.2 Blind loop syndrome, not elsewhere classified ("postsurgical blind loop syndrome (K91.2)")
• Type 1 Excludes: K90.82 Short bowel syndrome ("postsurgical malabsorption, not elsewhere classified (K91.2)")

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 K91.2

• Complication (s) (from) (of) › gastrointestinal › postoperative › malabsorption NEC
• Complication (s) (from) (of) › surgical procedure (on) › malabsorption (postsurgical) NEC
• Disorder (of) › intestine, intestinal › carbohydrate absorption NEC › postoperative
• Malabsorption › postgastrectomy
• Malabsorption › postsurgical
• Malabsorption › syndrome › postsurgical
• Malnutrition › following gastrointestinal surgery
• Syndrome › blind loop › postsurgical
• Syndrome › malabsorption › postsurgical
• Tachyalimentation

Nearby codes

• K91 Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified
• K91.0 Vomiting following gastrointestinal surgery
• K91.1 Postgastric surgery syndromes
• K91.2 Postsurgical malabsorption, not elsewhere classified (this code)
• K91.3 Postprocedural intestinal obstruction
• K91.30 Postprocedural intestinal obstruction, unspecified as to partial versus complete
• K91.31 Postprocedural partial intestinal obstruction
• K91.32 Postprocedural complete intestinal obstruction
• K91.5 Postcholecystectomy syndrome