what was the diagnosis of patient 98015 for the first time in this year?
select d_icd_diagnoses.short_title from d_icd_diagnoses where d_icd_diagnoses.icd9_code in ( select diagnoses_icd.icd9_code from diagnoses_icd where diagnoses_icd.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 98015 ) and datetime(diagnoses_icd.charttime,'start of year') = datetime(current_time,'start of year','-0 year') order by diagnoses_icd.charttime asc limit 1 )