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ICD-10 Guide
ICD-10 CodesN28.84

N28.84

Billable

Pyelitis cystica

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/18/2025

Code Description

ICD-10 N28.84 is a billable code used to indicate a diagnosis of pyelitis cystica.

Key Diagnostic Point:

Pyelitis cystica is a rare condition characterized by the presence of cysts in the renal pelvis, often associated with chronic irritation or inflammation of the kidney. This condition can arise from various etiologies, including recurrent urinary tract infections, obstruction of the urinary tract, or chronic renal disease. The cysts may vary in size and can lead to symptoms such as flank pain, hematuria, and urinary frequency. Diagnosis typically involves imaging studies such as ultrasound or CT scans, which can reveal the cystic changes in the renal pelvis. Treatment may include addressing the underlying cause, such as managing infections or relieving obstructions, and in some cases, surgical intervention may be necessary. Pyelitis cystica is classified under disorders of the kidney and ureter not elsewhere classified, highlighting its unique presentation and the need for careful evaluation to differentiate it from other renal pathologies.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Requires understanding of renal anatomy and pathology.
  • Differentiation from other renal disorders can be challenging.
  • Documentation must specify the presence of cysts and associated symptoms.
  • Potential for misclassification with similar codes.

Audit Risk Factors

  • Inadequate documentation of symptoms and imaging results.
  • Failure to specify the underlying cause of pyelitis cystica.
  • Misuse of related codes leading to incorrect billing.
  • Lack of clarity in the treatment plan documented.

Specialty Focus

Medical Specialties

Urology

Documentation Requirements

Detailed imaging reports and clinical notes on symptoms.

Common Clinical Scenarios

Patients presenting with recurrent UTIs and flank pain.

Billing Considerations

Ensure that all cystic changes are documented and correlated with clinical findings.

Nephrology

Documentation Requirements

Comprehensive renal function tests and history of kidney disease.

Common Clinical Scenarios

Patients with chronic kidney disease presenting with cystic changes.

Billing Considerations

Document any underlying renal pathology that may contribute to the condition.

Coding Guidelines

Inclusion Criteria

Use N28.84 When
  • Follow official ICD
  • 10 coding guidelines, ensuring accurate documentation of the condition's specifics
  • Include any relevant imaging studies and clinical findings to support the diagnosis

Exclusion Criteria

Do NOT use N28.84 When
  • Exclude conditions that do not meet the criteria for pyelitis cystica

Related ICD-10 Codes

Related CPT Codes

76700CPT Code

Ultrasound, abdomen, complete

Clinical Scenario

Used to evaluate renal cysts in patients with flank pain.

Documentation Requirements

Document indications for ultrasound and findings.

Specialty Considerations

Urologists should correlate ultrasound findings with clinical symptoms.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of conditions like pyelitis cystica, improving the accuracy of diagnoses and treatment tracking. This specificity aids in better patient management and resource allocation.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like pyelitis cystica, improving the accuracy of diagnoses and treatment tracking. This specificity aids in better patient management and resource allocation.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of conditions like pyelitis cystica, improving the accuracy of diagnoses and treatment tracking. This specificity aids in better patient management and resource allocation.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What are the common symptoms of pyelitis cystica?

Common symptoms include flank pain, hematuria, and urinary frequency. Patients may also experience recurrent urinary tract infections.