ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesChapter 11: Diseases of the digestive systemK81

K81

Non-billable

Cholecystitis

Chapter 11:Diseases of the digestive system

BILLABLE STATUSNo
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 K81 is a used to indicate a diagnosis of cholecystitis.

Key Diagnostic Point:

Cholecystitis is an inflammation of the gallbladder, often resulting from a blockage of the cystic duct by gallstones. This condition can manifest as acute or chronic cholecystitis, with acute cases typically presenting with severe abdominal pain, fever, and nausea. Chronic cholecystitis may develop over time due to repeated episodes of acute inflammation, leading to a thickened gallbladder wall and potential complications such as gallbladder perforation or infection. Proper diagnosis often involves imaging studies like ultrasound or CT scans, and treatment may include surgical intervention, such as cholecystectomy, especially in cases of acute cholecystitis. Understanding the clinical significance of cholecystitis is crucial for timely management and preventing serious complications.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in presentation
  • Need for imaging studies
  • Potential for surgical intervention

Audit Risk Factors

  • Inadequate documentation of symptoms
  • Failure to specify acute vs. chronic
  • Misclassification of related conditions

Specialty Focus

Medical Specialties

Gastroenterology

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Surgery

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Related CPT Codes

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The clinical and administrative impact of the K81 code category is significant, as accurate coding can influence quality measures and patient outcomes. Monitoring the incidence of cholecystitis can provide insights into population health trends, particularly in relation to obesity and dietary factors that contribute to gallstone formation. Furthermore, understanding the implications of this code category can help healthcare providers implement preventive measures and improve patient education regarding gallbladder health, ultimately leading to better management of the condition and reduced healthcare costs.

ICD-9 vs ICD-10

The clinical and administrative impact of the K81 code category is significant, as accurate coding can influence quality measures and patient outcomes. Monitoring the incidence of cholecystitis can provide insights into population health trends, particularly in relation to obesity and dietary factors that contribute to gallstone formation. Furthermore, understanding the implications of this code category can help healthcare providers implement preventive measures and improve patient education regarding gallbladder health, ultimately leading to better management of the condition and reduced healthcare costs.

Reimbursement & Billing Impact

Reimbursement considerations may vary based on the severity of the condition and the treatment provided. For acute cases requiring surgery, it is important to include both the diagnosis code and the relevant CPT codes for the surgical procedure, as this will impact reimbursement rates. Additionally, proper coding can help avoid claim denials and ensure compliance with payer requirements.

Resources

Clinical References

  • •
    Official ICD-10 Guidelines for K81

Coding & Billing References

  • •
    Official ICD-10 Guidelines for K81

Frequently Asked Questions

What conditions are included in K81?

K81 includes acute cholecystitis, chronic cholecystitis, and other specified forms of cholecystitis. It does not cover conditions related to gallstones without inflammation, which are coded under K80.

When should I use K81 codes?

K81 codes should be used when a patient is diagnosed with cholecystitis, whether acute or chronic, and when there is clinical documentation supporting the diagnosis, including symptoms and imaging results.

What documentation is required for K81?

Documentation must include the patient's symptoms, diagnostic imaging results, and the clinical decision-making process leading to the diagnosis of cholecystitis. It is also important to specify whether the condition is acute or chronic.