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ICD-10 Coding for Diverticulitis with Perforation(K57.20, K57.21)

Complete ICD-10-CM coding and documentation guide for Diverticulitis with Perforation. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Perforated DiverticulitisDiverticular Disease with Perforation

Related ICD-10 Code Ranges

Complete code families applicable to Diverticulitis with Perforation

K57.2-K57.9Primary Range

Diverticular disease of intestine

This range includes codes for diverticulitis with and without perforation, abscess, and bleeding.

Peritonitis

Includes codes for peritonitis which may be used in conjunction with diverticulitis codes when applicable.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
K57.20Diverticulitis of large intestine with perforation and abscess without bleedingUse when diverticulitis of the large intestine is confirmed with perforation and abscess, but without bleeding.
  • CT scan showing extraluminal air
  • Pericolic abscess on imaging
K57.21Diverticulitis of large intestine with perforation and abscess with bleedingUse when diverticulitis of the large intestine is confirmed with perforation, abscess, and bleeding.
  • Endoscopy showing active bleeding
  • Drop in hemoglobin levels

Clinical Decision Support

Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.

Key Information: ICD-10 code for diverticulitis with perforation

Essential facts and insights about Diverticulitis with Perforation

The ICD-10 code for diverticulitis with perforation and abscess without bleeding is K57.20. Use K57.21 if bleeding is present.

Primary ICD-10-CM Codes for diverticulitis with perforation

Diverticulitis of large intestine with perforation and abscess without bleeding
Billable Code

Decision Criteria

clinical Criteria

  • CT scan confirms perforation and abscess without bleeding.

documentation Criteria

  • Absence of bleeding must be clearly documented.

Applicable To

  • Diverticulitis with perforation
  • Diverticulitis with abscess

Excludes

  • Diverticulitis with bleeding (K57.21)

Clinical Validation Requirements

  • CT scan showing extraluminal air
  • Pericolic abscess on imaging

Code-Specific Risks

  • Misidentifying the presence of bleeding
  • Failing to document abscess

Coding Notes

  • Ensure documentation specifies the absence of bleeding to use K57.20.

Ancillary Codes

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

Intra-abdominal abscess

K65.1
Use when an abscess is confirmed in conjunction with diverticulitis.

Differential Codes

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

Diverticulitis of large intestine with perforation and abscess with bleeding

K57.21
Presence of bleeding must be documented.

Diverticulitis of large intestine with perforation and abscess without bleeding

K57.20
Absence of bleeding must be documented.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Diverticulitis with Perforation to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code K57.20.

Impact

Clinical: May lead to inappropriate treatment decisions., Regulatory: Non-compliance with coding standards., Financial: Potential for incorrect reimbursement.

Mitigation Strategy

Ensure bleeding status is assessed and documented in all cases., Use standardized templates for documentation.

Impact

Reimbursement: May lead to lower reimbursement rates., Compliance: Non-compliance with coding guidelines., Data Quality: Decreases accuracy of clinical data.

Mitigation Strategy

Use K57.20 or K57.21 based on the presence of bleeding and specific location.

Impact

Failure to document abscess size and location can lead to audit issues.

Mitigation Strategy

Use imaging reports to confirm and document abscess details.

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 Diverticulitis with Perforation, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Diverticulitis with Perforation

Use these documentation templates to ensure complete and accurate documentation for Diverticulitis with Perforation. These templates include all required elements for proper coding and billing.

Acute Diverticulitis with Perforation

Specialty: Gastroenterology

Required Elements

  • CT imaging results
  • Presence of abscess
  • Bleeding status
  • Operative findings

Example Documentation

CT abdomen/pelvis shows sigmoid diverticulitis with 2cm perforation and pericolic abscess. No bleeding noted.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Diverticulitis with perforation.
Good Documentation Example
Acute sigmoid diverticulitis with 2cm perforation and localized abscess; no evidence of bleeding on CT angiography.
Explanation
The good example provides specific anatomical location, size of perforation, and bleeding status, which are essential for accurate coding.

Need help with ICD-10 coding for Diverticulitis with Perforation? Ask your questions below.

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