1. Just Colonization or Carrier
1.1. MRSA
1.1.1. Code Z22.322, Carrier or suspected carrier of Methicillin resistant Staphylococcus aureus, for patients documented as having MRSA colonization (resistant)
1.1.1.1. Documentation
1.1.1.1.1. MRSA screen positive
1.1.1.1.2. MRSA nasal swab positive
1.1.1.1.3. MRSA is present in or on the body without necessarily causing illness
1.2. MSSA
1.2.1. Code Z22.321, Carrier or suspected carrier of Methicillin susceptible Staphylococcus aureus, for patient documented as having MSSA colonization (susceptible)
1.2.1.1. Documentation
1.2.1.1.1. MSSA screen positive
1.2.1.1.2. MSSA nasal swab positive
1.2.1.1.3. MSSA is present in or on the body without necessarily causing illness
1.3. For coding purposes ALL staph. aureus infections are either
1.3.1. MRSA - No penicillin type drugs work
1.3.2. MSSA - Penicillin type drugs will work
2. Infection due to MRSA
2.1. Use combo code if available
2.1.1. i.e., A41.02, Sepsis due to MRSA
2.1.2. i.e., J15.212, Pneumonia due to MRSA
2.1.3. Do NOT assign code B95.62 Methicillin resistant Staphyloccous aureus infection as the cause of diseases classified elsewhere, as an additional code because the combination code includes the type of infection and the MRSA organization
2.1.3.1. In other words it would be redundant
2.1.4. Do not assign Z16.11, Resistance to penicillins
2.2. If no combo code available
2.2.1. Code current infection
2.2.2. B95.62, Methicillin resistant Staphylococcus aureus infection as the cause of diseases classified elsewhere
2.2.3. Do not assign Z16.11, Resistance to penicillins
3. Colonization + Infection
3.1. MRSA
3.1.1. Code MRSA infection (same as above)
3.1.1.1. Use combo code if available
3.1.1.1.1. i.e., A41.02, Sepsis due to MRSA
3.1.1.1.2. i.e., J15.212, Pneumonia due to MRSA
3.1.1.2. If no combo code available
3.1.1.2.1. Code current infection
3.1.1.2.2. B95.62, Methicillin resistant Staphylococcus aureus infection as the cause of diseases classified elsewhere
3.1.1.2.3. Do not assign Z16.11, Resistance to penicillins
3.1.2. Code Z22.322, Carrier or suspected carrier of Methicillin resistant Staphylococcus aureus
3.2. MSSA
3.2.1. Code MSSA infection
3.2.1.1. Use combo code if available
3.2.1.1.1. i.e., A41.01, Sepsis due to MSSA
3.2.1.1.2. i.e., J15.211, Pneumonia due to MSSA
3.2.1.2. If no combo code available
3.2.1.2.1. Code current infection
3.2.1.2.2. B95.61, Methicillin susceptible Staphylococcus aureus infection as the cause of diseases classified elsewhere
3.2.2. Code Z22.321, Carrier or suspected carrier of Methicillin susceptible Staphylococcus aureus, for patient documented as having MSSA colonization