instruction: what's the last time patient 2498 has had a procedure until 1 year ago?
response: SELECT procedures_icd.charttime FROM procedures_icd WHERE procedures_icd.hadm_id IN (SELECT admissions.hadm_id FROM admissions WHERE admissions.subject_id = 2498) AND DATETIME(procedures_icd.charttime) <= DATETIME(CURRENT_TIME(), '-1 year') ORDER BY procedures_icd.charttime DESC LIMIT 1