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v1.0.0
ICD-10 Guide
DiagnosesRenal Pain

Renal Pain

ICD-10 Coding for Renal Pain(N23, R10.9)

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

Diagnosis Overview

What is Renal Pain?
Essential facts and insights about Renal Pain

Key Clinical Considerations:

  • Flank pain, often radiating to the groin
  • Hematuria, proteinuria, or urinary tract infection signs
  • Tenderness in the costovertebral angle

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history including onset, duration, and character of pain
  • Results of urinalysis and imaging studies (e.g., ultrasound, CT scan)
  • Detailed physical exam findings, including palpation results

Coding Guidelines

Usage Guidelines & Examples

  • Ensure correct code selection based on specific diagnosis and symptoms.
  • Common errors include using unspecified codes when more specific codes are available.

Code Exclusions

Important Exclusions

  • Acute renal failure (N17), chronic kidney disease (N18)
  • Alternative codes for urinary tract infections or other renal conditions

Related ICD-10 Codes

Primary Codes
N28.9
Unspecified disorder of kidney and ureter
N20.0
Calculus of kidney
N39.0
Urinary tract infection, site not specified
Ancillary Codes
G89.11
N23
when pain management is the focus of care.
Differential Codes
R10.9
R10.9
when the cause of pain is not confirmed as renal colic.
N23
N23
when renal colic is confirmed by imaging or lab results.

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Nephrology

Specialty Applications

  • Adults and children presenting with renal pain
  • Emergency departments, outpatient nephrology clinics, and inpatient settings

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 detailed patient history, physical exam findings, and diagnostic test results.

Billing considerations?

Ensure accurate coding based on documented diagnosis and associated symptoms.