Concept code values can be corrupted if they are coerced into large numeric values

[eedrummer]

The component that handles code values in the module builder, for example procedure_code.code in an ImagingStudy state, will coerce a value that is all numeric characters to a JavaScript Numeric type. For some SNOMED codes, such as 16335031000119103, which is used in the lung cancer module, the numeric representation is beyond the precision of the JavaScript interpreter. The loss of precision causes the code to actually change.

Code values should all be treated as strings, even if they are only numeric characters.

[dehall]

I think this is the offending function:

module-builder/src/utils/stringUtils.js

Line 4 in db7d0ef

export function normalizeType(value){

Called from here:
https://github.com/synthetichealth/module-builder/blob/master/src/reducers/editor.js#L260

This may be trickier to fix than I originally suspected...