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ICD-10 Guide
DiagnosesAdenomyomatosis Of The Gallbladder

Adenomyomatosis Of The Gallbladder

ICD-10 Coding for Adenomyomatosis of the Gallbladder(K82.9)

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

Diagnosis Overview

What is Adenomyomatosis Of The Gallbladder?
Essential facts and insights about Adenomyomatosis of the Gallbladder

Key Clinical Considerations:

  • Patients may present with biliary colic, abdominal pain, or asymptomatic findings during imaging studies.
  • Ultrasound may reveal characteristic features such as gallbladder wall thickening and intramural cystic spaces.
  • Physical examination may show tenderness in the right upper quadrant, but often findings are non-specific.
  • Imaging findings typically include a 'comet tail' artifact on ultrasound, indicating the presence of adenomyomatosis.
  • Severity is generally not staged, but the presence of symptoms may guide treatment decisions.

Clinical Information

Clinical Criteria & Documentation Requirements

  • Medical records must include a clear diagnosis of adenomyomatosis of the gallbladder supported by imaging findings.
  • Terminology such as 'adenomyomatosis', 'gallbladder wall thickening', and 'intramural cysts' should be used.
  • Examples include: 'Ultrasound shows gallbladder wall thickening consistent with adenomyomatosis.'
  • Documentation must justify the medical necessity for imaging studies and any subsequent interventions.
  • Quality measures may include tracking the frequency of imaging studies performed for symptomatic patients.

Coding Guidelines

Usage Guidelines & Examples

  • Use this diagnosis code when imaging findings confirm adenomyomatosis without complications.
  • Do not use this code if the patient has gallstones or other gallbladder diseases that require different coding.
  • Similar codes include K82.8 (Other specified disorders of gallbladder) but should be used based on specific findings.
  • Common errors include misclassifying adenomyomatosis as cholecystitis; ensure imaging findings are accurately interpreted.
  • In complex cases, consider the patient's full clinical picture and any co-existing gallbladder conditions.

Code Exclusions

Important Exclusions

  • Excludes conditions such as acute cholecystitis and gallbladder cancer.
  • Alternative codes for excluded conditions include K80 for gallstones and K81 for cholecystitis.
  • Conditions are excluded due to differing pathophysiology and treatment approaches.
  • Common mistakes include coding adenomyomatosis when acute symptoms suggest cholecystitis.
  • Related but distinct conditions include gallbladder polyps and chronic cholecystitis.

Related ICD-10 Codes

Primary Codes
K82.9
Adenomyomatosis of the gallbladder, unspecified
K82.8
Other specified disorders of gallbladder
Ancillary Codes
K80.xx
K81.x
Differential Codes
K80.xx
K81.x

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Radiology

Specialty Applications

  • This diagnosis applies to patients with gallbladder wall abnormalities detected via imaging.
  • Patient populations may include adults, particularly those over 40, with risk factors such as obesity.
  • Clinical settings include outpatient imaging centers and inpatient evaluations.
  • Specialty-specific applications are relevant in radiology and gastroenterology.
  • Treatment contexts may involve monitoring or surgical intervention based on symptoms.

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

Template 1

Template: 'Patient diagnosed with adenomyomatosis based on ultrasound findings.'

Template 2

Template: 'Clinical presentation consistent with adenomyomatosis including abdominal pain.'

Template 3

Template: 'Diagnostic criteria met as evidenced by ultrasound showing gallbladder wall thickening.'

Template 4

Template: 'Treatment plan initiated for adenomyomatosis with monitoring of symptoms.'

Template 5

Template: 'Follow-up care for adenomyomatosis including regular imaging assessments.'

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

What documentation is required for this diagnosis?

Documentation must include imaging results and clinical correlation.

How does this differ from similar diagnoses?

Adenomyomatosis is characterized by specific imaging findings, unlike cholecystitis.

What are common billing considerations?

Ensure medical necessity is documented to optimize reimbursement.

What procedures are typically associated?

CPT codes for ultrasound or cholecystectomy may be relevant.

Are there any quality reporting implications?

Quality measures may include tracking imaging appropriateness and outcomes.