Patient presents with complaints of right knee pain and swelling following a direct blow to the knee.  Onset of symptoms occurred [Number] daysweeks ago during [Mechanism of injury - e.g., a fall, sports activity].  The patient denies any popping or locking sensation in the knee.  Physical examination reveals localized tenderness and ecchymosis over the lateralright medial aspect of the right knee.  Range of motion is slightly limited due to pain, with discomfort noted during flexion and extension.  There is no palpable effusion or joint instability.  McMurray's test is negative.  Lachman and anteriorposterior drawer tests are negative.  Palpation reveals no crepitus.  Neurovascular examination of the right lower extremity is intact.  Assessment: Right knee contusion.  Diagnosis confirmed based on clinical findings, mechanism of injury, and physical exam.  Differential diagnoses considered include meniscus tear, ligament sprain, and fracture, which were ruled out based on negative special tests and absence of significant joint instability.  Plan:  Conservative management is recommended.  Patient advised to follow RICE protocol (rest, ice, compression, elevation).  Over-the-counter analgesics such as ibuprofen or naproxen sodium may be used for pain management.  Patient education provided regarding activity modification and avoidance of weight-bearing activities as tolerated.  Follow-up appointment scheduled in [Number] weeks to reassess symptoms and progress.  ICD-10 code: S80.10XA.  Patient instructed to return to the clinic if symptoms worsen or new symptoms develop.