Remove MS from PCTGFEInstitutional and PCTGFEProfessional Claim.extension [providerEventMethodology]   Change the providerEventMethodology extension description from: This extension is used for indicating how the provider determined the number of providers involved--through internal experience/analysis or an external methodology.   to: This extension is used for indicating the method a provider used to group services, and those providing such services, beyond what may be indicated through DRGs that the payer or patient may find helpful (e.g. grouping services by a standardized episode of care definition).