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ICD-10 Coding for Irritable Bowel Syndrome with Diarrhea(K58.0)

Complete ICD-10-CM coding and documentation guide for Irritable Bowel Syndrome with Diarrhea. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

IBS-DDiarrhea-predominant IBS

Related ICD-10 Code Ranges

Complete code families applicable to Irritable Bowel Syndrome with Diarrhea

K58-K58.9Primary Range

Irritable bowel syndrome

This range includes all subtypes of irritable bowel syndrome, with K58.0 specifically for IBS with diarrhea.

Other functional intestinal disorders

Includes functional diarrhea which can be a differential diagnosis for IBS-D.

Key Information: ICD-10 code for IBS with diarrhea

Essential facts and insights about Irritable Bowel Syndrome with Diarrhea

The ICD-10 code for irritable bowel syndrome with diarrhea is K58.0, used when Rome IV criteria are met.

Primary ICD-10-CM Code for irritable bowel syndrome with diarrhea

Irritable bowel syndrome with diarrhea
Billable Code

Decision Criteria

clinical Criteria

  • Presence of Rome IV criteria and absence of alarm features.

coding Criteria

  • Diarrhea is the predominant symptom.

Applicable To

  • IBS with diarrhea

Excludes

  • Functional diarrhea (K59.1)
  • Infectious diarrhea (A09)

Clinical Validation Requirements

  • Rome IV criteria: Recurrent abdominal pain at least 1 day per week in the last 3 months, associated with two or more of the following: improvement with defecation, change in stool frequency, change in stool form.
  • Bristol Stool Scale type 6-7 for at least 25% of stools.

Code-Specific Risks

  • Incorrectly coding as K58.9 (IBS unspecified) when diarrhea is predominant.

Coding Notes

  • Ensure documentation meets Rome IV criteria and excludes alarm features.

Ancillary Codes

Additional codes that should be used in conjunction with the main diagnosis codes when applicable.

Unspecified anxiety disorder

F41.9
Use when anxiety is documented as a comorbid condition.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Functional diarrhea

K59.1
Use when diarrhea is present without abdominal pain or discomfort, and IBS criteria are not met.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Irritable Bowel Syndrome with Diarrhea to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code K58.0.

Impact

Clinical: Misdiagnosis of IBS-D., Regulatory: Non-compliance with coding standards., Financial: Potential claim denials.

Mitigation Strategy

Use structured templates for documentation., Regular training on Rome IV criteria.

Impact

Reimbursement: Potential underpayment due to incorrect DRG assignment., Compliance: Increased audit risk for incorrect coding., Data Quality: Inaccurate clinical data affecting patient care.

Mitigation Strategy

Ensure documentation specifies diarrhea as the predominant symptom to use K58.0.

Impact

Lack of specific documentation for IBS-D criteria.

Mitigation Strategy

Implement regular audits and training on documentation requirements.

Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.

Frequently Asked Questions

Common questions about ICD-10 coding for Irritable Bowel Syndrome with Diarrhea, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Irritable Bowel Syndrome with Diarrhea

Use these documentation templates to ensure complete and accurate documentation for Irritable Bowel Syndrome with Diarrhea. These templates include all required elements for proper coding and billing.

Chronic diarrhea with abdominal pain

Specialty: Gastroenterology

Required Elements

  • Rome IV criteria
  • Bristol Stool Scale documentation
  • Exclusion of alarm features

Example Documentation

Patient presents with recurrent abdominal pain relieved by defecation and loose stools (Bristol type 6) for 6 months. No weight loss or nocturnal symptoms.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Patient has diarrhea.
Good Documentation Example
Patient meets Rome IV criteria for IBS-D: recurrent abdominal pain ≥1 day/week, loose stools (Bristol 6) ≥25% of time.
Explanation
The good example provides specific criteria and stool type, meeting documentation requirements.

Need help with ICD-10 coding for Irritable Bowel Syndrome with Diarrhea? Ask your questions below.

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