instruction: count how many times until 2104 patient 73595 has had a exc/dest intvrt disc nos.
response: SELECT COUNT(*) FROM procedures_icd WHERE procedures_icd.icd9_code = (SELECT d_icd_procedures.icd9_code FROM d_icd_procedures WHERE d_icd_procedures.short_title = 'exc/dest intvrt disc nos') AND procedures_icd.hadm_id IN (SELECT admissions.hadm_id FROM admissions WHERE admissions.subject_id = 73595) AND STRFTIME('%y', procedures_icd.charttime) <= '2104'