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K91 ICD-10-CM Code: Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Official description

K91

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

ICD-10-CM diagnosis code · United States clinical modification

Where K91 sits

  1. 1

    Chapter 11

    Diseases of the digestive system (K00-K95)

  2. 2

    Section

    Other diseases of the digestive system (K90-K95)

  3. 3

    Category K91

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

  4. 4

    Code K91

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

Codes under K91

K91 is a non-billable category. Choose the child code that best matches the documented diagnosis.

K91.0Vomiting following gastrointestinal surgeryK91.1Postgastric surgery syndromesK91.2Postsurgical malabsorption, not elsewhere classifiedK91.3Postprocedural intestinal obstructionK91.5Postcholecystectomy syndromeK91.6Intraoperative hemorrhage and hematoma of a digestive system organ or structure complicating a procedureK91.7Accidental puncture and laceration of a digestive system organ or structure during a procedureK91.8Other intraoperative and postprocedural complications and disorders of digestive system

Notes for this code

Inclusion terms

No inclusion terms are listed for K91.

Code first

No “code first” instruction is listed for K91.

Use additional code

No “use additional code” instruction is listed for K91.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for K91.

Excludes2

Conditions not included here that may be reported separately when present.

  • 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)

Source and release

Data release
U.S. ICD-10-CM · FY 2027
Effective date
Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Frequently asked questions

What does ICD-10-CM code K91 mean?

K91 is the FY 2027 U.S. ICD-10-CM code for “Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified.”

Is K91 a billable or specific ICD-10-CM code?

No. K91 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is K91 located in ICD-10-CM?

K91 is listed in Chapter 11, Diseases of the digestive system (K00-K95), within Other diseases of the digestive system (K90-K95) (K90–K95), under category K91, Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified.

What coding notes are listed for K91?

No inclusion terms are listed for K91 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. Excludes2 notes: 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).