Submitted by CDC_DSMH_WG on
CDC's comment for inclusion in USCDI v7
a. National Hospital Care Surveys and National Ambulatory Medical Care Survey (NAMCS) both conduct data linkages to other datasets (e.g. National Death Index, the U.S. Department of Housing and Urban Development, etc.) and publish them as restricted use data files. In addition to producing restricted use data files that link the National Hospital Care Surveys and NAMCS to other federal data sources, we’ve also published example projects to demonstrate the utility of these linked files. In addition, please find the National Health Statistics Report Number 201 “National Hospital Care Survey Demonstration Projects: Examination of Maternal Health Outcomes by Housing Assistance Status” at https://www.cdc.gov/nchs/data/nhsr/nhsr201.pdf. NAMCS and National Hospital Care Surveys will be able to publish additional example projects as data are successfully linked to other data sources . Recently, the 2019 and 2020 NHCS have been linked with the National Death Index (https://www.cdc.gov/nchs/linked-data/nhcs/restricted-ndi.html). National Hospital Care Surveys will be able to publish additional example projects as data are successfully linked to other data sources.This data element will increase the ability to track unique patients, improving accuracy and quality in these produced datasets.
b. Location of data element in the current HCS CDA IG V1.2: x-path /ClinicalDocument/recordTarget/patientRole/patient/id.
c. Patient Identifier Type is encompassed in the patient ID structure. The ID has an issuing authority and type associated with it. Link in the C-CDA IG to the Patient Identifier Type: II: InstanceIdentifier (V3 Data Type) - Clinical Document Architecture v2.0.1-sd (https://hl7.org/cda/stds/core/2.0.1-sd/StructureDefinition-II.html).
d. Description of what DHCS currently receives in production: The majority of EHR files submitted for NAMCS and National Hospital Care Surveys have identifier data for patient name (first, middle, and last), date of birth, and patient address. All EHR files submitted to NHCS lack medical record number (MRN) and Health Insurance Claims Number (HIC). In addition, NHCS would like to expand the availability of identifiers to include patient control number (PCN).







Submitted by melanie.kourba… on
Assigning Authority
APHL supports the addition of this very important data element for public health (see previous comment on USCDI V6: https://isp.healthit.gov/comment/14142) but points out that in order to be useful across organizations the system that created the identifier, HL7 calls this the assigning authority, needs to also be included. Thus, APHL recommends including the assigning authority with this and ANY other identifier data element (in all HL7 products this is part of the various supported data types for identifiers). APHL proposes to update the definition to: " Sequence of characters assigned by an organization to uniquely refer to a patient over time, including a means to identify the organization or system that assigned it."