H70.1: Chronic mastoiditis

There is a small bony projection on the head behind the ear. It contains small cavities full of air. You can feel this bony projection behind the ear. In your case, this bone is persistently inflamed. One reason for this may be a connecting passageway to another inflamed site in the head. Damage to a tooth may also be the reason for this bone being inflamed. Your hearing might be worse due to the persistent inflammation in this bone. There is usually only mild soreness, and sometimes none at all. You may or may not have a high temperature.

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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.