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v1.0.0
ICD-10 Guide
DiagnosesSmall Bowel Obstruction

Small Bowel Obstruction

ICD-10 Coding for Small Bowel Obstruction(K56.51, K56.52, K91.31)

PRIMARY SPECIALTYEmergency Medicine
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Small Bowel Obstruction?
Essential facts and insights about Small Bowel Obstruction

Key Clinical Considerations:

  • Abdominal pain, distension, vomiting, constipation
  • Abdominal X-ray showing air-fluid levels, CT scan revealing obstruction
  • Tenderness in the abdomen, decreased bowel sounds, signs of dehydration

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history, physical exam findings, imaging results, treatment plan
  • ICD-10-CM codes for small bowel obstruction (K56.0)
  • Example: 'Patient presents with acute abdominal pain and vomiting, CT scan confirms small bowel obstruction.'

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for coding severity and complications.
  • Common errors include misclassifying the type of obstruction.

Code Exclusions

Important Exclusions

  • Ileus, volvulus, and other gastrointestinal obstructions.
  • Alternative codes for related conditions.

Related ICD-10 Codes

Primary Codes
K56.0
Small bowel obstruction
Ancillary Codes
Z98.0
Differential Codes
K56.52
K56.51
K91.32

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Emergency Medicine

Specialty Applications

  • Adults and children presenting with abdominal pain.
  • Emergency departments and urgent care settings.

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

Documentation requirements?

Include detailed patient history, physical exam, and imaging results.

Billing considerations?

Ensure accurate coding to reflect the severity and complexity of the case.