Patient presents with a chief complaint of left testicular pain.  Onset of pain was (duration) and is characterized as (sharp, dull, aching, throbbing, radiating, intermittent, constant).  The pain is located in the (upper, lower, medial, lateral) aspect of the left testicle and is (localized, radiating) to the (groin, lower abdomen, back).  Patient reports (associated symptoms:  nausea, vomiting, fever, chills, dysuria, urinary frequency, urgency, hematuria, swelling, redness, tenderness, change in testicular size or shape, trauma, sexual activity).  Physical examination reveals (tenderness, swelling, erythema, warmth, induration, palpable mass, cremasteric reflex present or absent, Prehn sign positive or negative).  Differential diagnosis includes epididymitis, orchitis, testicular torsion, hydrocele, spermatocele, varicocele, inguinal hernia, referred pain, trauma, and testicular cancer.  Initial assessment suggests (working diagnosis).  Ordered (diagnostic tests: urinalysis, ultrasound, STI testing).  Plan of care includes (pain management: NSAIDs, ice packs, scrotal support) and (further investigation as indicated: urology consult, surgical intervention). Patient education provided regarding (condition, treatment plan, warning signs of testicular torsion: severe pain, nausea, vomiting, high fever).  Follow-up scheduled in (duration) to reassess symptoms and discuss results of diagnostic testing.  ICD-10 code: (appropriate code based on working diagnosis).