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v1.0.0
ICD-10 Guide
DiagnosesRadiation Cystitis

Radiation Cystitis

ICD-10 Coding for Radiation Cystitis(N30.40, N30.41)

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

Diagnosis Overview

What is Radiation Cystitis?
Essential facts and insights about Radiation Cystitis

Key Clinical Considerations:

  • Hematuria (blood in urine)
  • Increased urinary frequency and urgency
  • Dysuria (painful urination)
  • Key diagnostic tests include cystoscopy showing bladder inflammation and biopsy if necessary
  • Physical exam may reveal suprapubic tenderness

Clinical Information

Clinical Criteria & Documentation Requirements

  • Document patient history of radiation therapy
  • Use specific terminology such as 'radiation-induced cystitis'
  • Examples include noting the onset of symptoms post-radiation therapy and any relevant imaging findings

Coding Guidelines

Usage Guidelines & Examples

  • Usage guidelines emphasize the importance of linking symptoms to radiation exposure.
  • Common errors include misclassifying cystitis types or omitting radiation history.

Code Exclusions

Important Exclusions

  • Other types of cystitis such as infectious or interstitial cystitis.
  • Alternative codes for non-radiation related bladder conditions.

Related ICD-10 Codes

Primary Codes
N30.2
Radiation cystitis
Ancillary Codes
R31.0
D62
Differential Codes
N30.00
N30.01

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Urology

Specialty Applications

  • Patients with a history of pelvic radiation therapy, particularly for cancer treatment.
  • Clinical settings include urology clinics and oncology follow-up appointments.

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

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

Documentation requirements?

Include details of radiation therapy history and symptom onset.

Billing considerations?

Ensure accurate coding to reflect the specific type of cystitis for proper reimbursement.