Table 2.

Fields and Rules for Tabular Representation.

Field	Description and Rules (in italics)
1. mrn	Medical Record Number for patient
2. date	Date of report
3. acc_no	Unique accession number of report
4. report_type	Type of report as represented by an institution-specific code or textual name (e.g., MED code ‘40829’ refers to ‘CPMC X- Ray of Chest, Portable’)
5. finding_id	Unique number assigned to each primary finding in a report
6. primary_type	Type of the primary finding (e.g., problem)
7. primary_value	Value of the primary finding (e.g., ‘fracture’)
8. primary_code	UMLS code(s) for primary finding Only preserve the code (e.g., ‘UMLS:C0035522^rib fractures’ ‘C0035522’)
9. bodyloc	Body location modifier for finding Present each value on a separate line with associated modifiers in the respective fields
10. bodyloc_code	UMLS code(s) for body location Only preserve the code (e.g., ‘C1281577’)
11. region	Relative locations within a body location (any except ‘right’, ‘left’, and ‘bilateral’) Concatenate repeat values with ‘^’
12. laterality	Region modifier (only ‘right’, ‘left’, ‘bilateral’) Concatenate repeat values with ‘^’
13. change	Denotes change in finding (e.g., ‘worse’) Concatenate repeat values with ‘^’ Concatenate nested certainty value with ‘-‘(e.g., ‘worse – no’)
14. descriptor	Qualifies a property of a finding or body location (e.g., ‘large’ or ‘round’) Concatenate repeat values with ‘^’ Concatenate nested certainty value with ‘-‘(e.g., ‘round – high’)
15. problemdescr	Qualifies a problem finding Concatenate repeat values with ‘^’ Concatenate nested certainty value with ‘-‘(e.g., ‘mass – low’)
16. certainty	Certainty of finding (e.g., ‘rule out’) Concatenate repeat values with ‘^’’ Ignore nested modifiers
17. status	Denotes temporal information (e.g., ‘end’) Concatenate repeat values with ‘^’ Add nested date value to other_mod field
18. other_mod	All other modifier types and values not included in other fields (e.g., date) Concatenate values with ‘:’, ‘^’, and ‘;’ Ignore nested modifiers
19. sectname	Section of report that the finding occurs in Shorten value where appropriate (e.g., ‘report description item' → ‘description’)
20. sid	Sentence identifier Abbreviate value (e.g., ‘s6' → ‘6’)
21. parsemode	Parse mode Abbreviate value (e.g., ‘mode1' →‘1’)