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v1.0.0
ICD-10 Guide
DiagnosesHealthcare Associated Pneumonia

Healthcare Associated Pneumonia

ICD-10 Coding for Healthcare-Associated Pneumonia(J18.9)

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

Diagnosis Overview

What is Healthcare Associated Pneumonia?
Essential facts and insights about Healthcare-Associated Pneumonia

Key Clinical Considerations:

  • Fever, cough, dyspnea, purulent sputum
  • Chest X-ray showing new infiltrates, sputum culture positive for pathogens
  • Decreased breath sounds, crackles on auscultation, dullness to percussion

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history of hospitalization, onset of symptoms after 48 hours of admission
  • Use of terms like 'healthcare-associated pneumonia' or 'HAP'
  • Examples: 'Patient developed pneumonia after 3 days in ICU with fever and cough.'

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for distinguishing between community-acquired and healthcare-associated pneumonia.
  • Common errors include misclassifying HAP as community-acquired pneumonia.

Code Exclusions

Important Exclusions

  • Aspiration pneumonia, viral pneumonia, and pneumonia due to other specified organisms.
  • Alternative codes may include those for specific pathogens or complications.

Related ICD-10 Codes

Primary Codes
J18.9
Pneumonia, unspecified
J18.1
Lobar pneumonia, unspecified
Ancillary Codes
Y95
Differential Codes
J15.1

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Pulmonology

Specialty Applications

  • Patients with recent hospitalization, nursing home residents, patients on long-term care.
  • Clinical settings include hospitals, long-term care facilities, and outpatient clinics.

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?

Document onset timing, symptoms, and treatment response.

Billing considerations?

Ensure accurate coding to reflect severity and associated conditions.