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v1.0.0
ICD-10 Guide
DiagnosesLoose Stool

Loose Stool

ICD-10 Coding for Loose Stool(R19.7, K59.1)

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

Diagnosis Overview

What is Loose Stool?
Essential facts and insights about Loose Stool

Key Clinical Considerations:

  • Frequent loose or watery stools
  • Stool consistency assessment (Bristol Stool Scale)
  • Signs of dehydration or electrolyte imbalance

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history of stool frequency and consistency
  • Duration of symptoms and associated factors
  • Specific terminology such as 'diarrhea' or 'loose stools'

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for coding diarrhea vs. loose stools; avoid using unspecified codes when possible.
  • Common errors include misclassifying the cause of diarrhea.

Code Exclusions

Important Exclusions

  • Infectious diarrhea (A00-A09)
  • Irritable bowel syndrome (K58)

Related ICD-10 Codes

Primary Codes
R19.7
Diarrhea, unspecified
K52.9
Noninfectious gastroenteritis and colitis, unspecified
Ancillary Codes
F45.8
Differential Codes
K58.0
K52.9

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Gastroenterology

Specialty Applications

  • Adults and children experiencing gastrointestinal symptoms
  • Outpatient and inpatient gastroenterology 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, symptom duration, and stool characteristics.

Billing considerations?

Ensure accurate coding to avoid denials; consider associated conditions.