Pneumocystosis

This code represents Pneumocystis pneumonia (PCP), a serious opportunistic fungal infection primarily affecting immunocompromised individuals. It is caused by the organism Pneumocystis jirovecii and typically manifests as a diffuse interstitial pneumonia.

Use this code for confirmed diagnoses of Pneumocystis pneumonia, often seen in patients with HIV/AIDS, organ transplant recipients, or those on immunosuppressive therapy. Documentation should clearly state the diagnosis of Pneumocystis infection, supported by laboratory findings (e.g., sputum microscopy, bronchoalveolar lavage) or clinical presentation in a high-risk patient.

• Always code the underlying immunocompromised state (e.g., HIV, transplant status) as a primary or secondary diagnosis.
• Do not confuse with other types of pneumonia; ensure the documentation specifically identifies Pneumocystis as the causative agent.
• Review documentation for any associated respiratory failure or other complications, which would require additional coding.