K91.2 Postsurgical malabsorption, not elsewhere classified

The ICD-10-CM code for Postsurgical malabsorption, not elsewhere classified is K91.2 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

11: Diseases of the digestive system (K00-K95)

Section

K90-K95: Other diseases of the digestive system (K90-K95)

Category K91

32 codes (24 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to K91.2:

• Tachyalimentation
• Malabsorption › postgastrectomy
• Malabsorption › postsurgical
• Malnutrition › following gastrointestinal surgery
• Syndrome › blind loop › postsurgical
• Syndrome › malabsorption › postsurgical
• Complication (s) (from) (of) › surgical procedure (on) › malabsorption (postsurgical) NEC
• Malabsorption › syndrome › postsurgical

Inclusion Terms

• Postsurgical blind loop syndrome

U.S. Hospital Utilization

• An estimated 26,925 U.S. inpatient stays in 2023 included K91.2 among the documented diagnoses.
• 1,480 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Chapter 11 reserved for future expansion

11. Chapter 11: Diseases of the Digestive System (K00-K95) Reserved for future guideline expansion

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)