count the number of times patient 26849 during the last year had received a venous cath nec procedure.
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 = 'venous cath nec' ) and procedures_icd.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 26849 ) and datetime(procedures_icd.charttime,'start of year') = datetime(current_time,'start of year','-1 year')