Patient presents with signs and symptoms suggestive of retroperitoneal fibrosis (RPF), also known as Ormond's disease.  The patient reports experiencing [insert specific patient complaint, e.g., dull, aching back pain, abdominal pain, flank pain, lower extremity edema, weight loss, fatigue, nausea, vomiting].  Physical examination reveals [insert specific physical findings, e.g., palpable abdominal mass, lower extremity edema, hypertension].  The patient's medical history includes [list relevant medical history, e.g., hypertension, smoking history, medication use, previous surgeries, autoimmune disorders, infections, malignancy].  Laboratory results indicate [insert pertinent lab values, e.g., elevated erythrocyte sedimentation rate (ESR), elevated C-reactive protein (CRP), elevated creatinine, anemia, urinalysis findings].  Imaging studies, including [specify imaging modality, e.g., CT scan of the abdomen and pelvis, MRI of the abdomen and pelvis, intravenous pyelogram (IVP)], demonstrate [describe imaging findings, e.g., soft tissue mass encasing the aorta and inferior vena cava, ureteral obstruction, hydronephrosis].  Differential diagnoses considered include [list differential diagnoses, e.g., lymphoma, malignancy, inflammatory aortic aneurysm, periaortitis].  Based on the clinical presentation, laboratory findings, and imaging results, the diagnosis of retroperitoneal fibrosis is suspected.  A biopsy may be considered for definitive diagnosis and to rule out malignancy.  The initial treatment plan includes [describe treatment plan, e.g., corticosteroids, immunosuppressants, ureteral stenting, surgical intervention to relieve ureteral obstruction].  Patient education provided regarding the disease process, treatment options, potential complications, and follow-up care.  Patient will be closely monitored for treatment response and development of complications such as renal impairment, deep vein thrombosis, and pulmonary embolism.  ICD-10 code M79.1 is recorded for this encounter.  Follow-up scheduled in [timeframe] to reassess symptoms, monitor treatment efficacy, and adjust management as needed.