Z22: Carrier of infectious disease
Z22.7: Latent tuberculosis
Latent tuberculosis, classified under ICD-10 code Z22.7, is a state where an individual is infected with Mycobacterium tuberculosis but does not show any active symptoms of the disease. This condition is not contagious. It occurs when the body's immune system is able to control the growth of the bacteria, therefore preventing the progression to active tuberculosis. People with latent tuberculosis do not feel sick and display no symptoms because the bacteria are in a dormant or non-active state. However, latent tuberculosis has potential to develop into active tuberculosis over time, specifically when the body's immune system becomes compromised or weakened. Consequently, while someone with latent tuberculosis is not an immediate threat to public health, screening and treatment are essential to prevent future cases of active tuberculosis.
Patient Disclaimer
The information provided on this page is for general educational purposes only. It is not intended for self-diagnosis and does not replace professional medical advice. Always consult your doctor or a qualified healthcare provider with any questions or concerns about your health.
If you see an ICD diagnosis code (e.g., on a medical report), be aware that doctors may also include additional indicators to express diagnostic certainty. Only a healthcare professional can interpret these codes accurately in the context of your individual case.
For a complete understanding of your condition and what the diagnosis means for you, please speak directly with your doctor.