noun
medical procedure; medical treatment
Refers to any act performed by a healthcare professional for diagnosis, treatment, or prevention. Often used in legal, ethical, or formal contexts.
医師は患者に適切な医療行為を行った。
The doctor performed an appropriate medical procedure on the patient.
医療行為には患者の同意が必要です。
Medical treatment requires the patient's consent.
Compound of 医療 (medical care) and 行為 (act, deed). The term is a straightforward Sino-Japanese compound with no irregular historical derivation.