ALTER TABLE medical_codes
  ADD COLUMN page VARCHAR(50) NULL AFTER id,
  ADD COLUMN flags VARCHAR(50) NULL AFTER code,
  ADD COLUMN s_value DECIMAL(10,2) NULL AFTER description,
  ADD COLUMN a_value DECIMAL(10,2) NULL AFTER s_value,
  ADD COLUMN section_detected VARCHAR(255) NULL AFTER a_value,
  ADD COLUMN subsection_detected VARCHAR(255) NULL AFTER section_detected,
  ADD COLUMN subsubsection_detected VARCHAR(255) NULL AFTER subsection_detected,
  ADD COLUMN level4_detected VARCHAR(255) NULL AFTER subsubsection_detected,
  ADD COLUMN hierarchy_path TEXT NULL AFTER level4_detected;