U00-U49: Provisional assignment of new diseases of uncertain etiology or emergency use
U12: COVID-19 vaccines causing adverse effects in therapeutic use
COVID-19 vaccines may cause adverse effects in therapeutic use, as denoted under the ICD-10 WHO group U12. These effects can vary considerably and are usually temporary, often signaling that the body is building protection against the virus. Common symptoms include pain and swelling in the arm where you received the shot, as well as fever, fatigue, headache, muscle pain, chills, and nausea. It's lack of these responses does not suggest the vaccine is ineffective. These symptoms usually disappear on their own within a few days. However, some individuals may experience more serious reactions, such as severe allergic reactions, although these are extremely rare. It is important to distinguish between these side effects, which occur shortly after vaccination, and potential vaccine-related injuries that may manifest later. The latter are still being studied and will require ongoing monitoring and research.
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.