Methicillin resis staph infct causing diseases classd elswhr

This code identifies Methicillin-resistant Staphylococcus aureus (MRSA) as the infectious agent responsible for a disease process that is classified and coded elsewhere. It signifies that an underlying condition, such as pneumonia, cellulitis, or sepsis, is specifically caused by a MRSA infection. This code is never a primary diagnosis.

Use this code as a secondary diagnosis when documentation explicitly states that MRSA is the causative organism for a condition classified to another ICD-10-CM code. This applies when the patient has a MRSA infection manifesting as a specific disease, and the physician's notes clearly identify MRSA as the etiology.

• Always sequence this code after the code for the specific disease caused by the MRSA infection.
• Ensure documentation clearly links MRSA as the cause of the classified disease, not just its presence.
• Do not use this code for MRSA colonization or carrier status; use Z22.322 for those scenarios.