Welcome to the CMS Data Element Library

The CMS Data Element Library (DEL) is the centralized resource for CMS assessment instrument data elements (e.g. questions and responses) and their associated health information technology (IT) standards.

What is the purpose of the DEL?

  1. Promotes interoperable health information exchange
  2. Supports "Patients over Paperwork"
  3. Assists with standardization of assessment data elements to help facilitate care coordination
  4. The DEL does not contain patient health information (PHI)

CMS Launches Data Element Library Supporting Interoperability
- June 21, 2018

New resource provides streamlined access to CMS assessment data elements mapped to health IT standards.

Read our history


Inpatient Rehabilitation Facilities (IRFs)

IRF Patient Assessment Instrument (IRF-PAI)

Home Health Agencies (HHAs)

Outcome and Assessment Information Set (OASIS)

Long-Term Care Hospitals (LTCHs)

LTCH Continuity Assessment Record and Evaluation (CARE) Data Set (LCDS)


Skilled Nursing Facilities (SNFs)

Minimum Data Set (MDS)

Hospice Care

Hospice Item Set (HIS)

Home and Community-Based Services (HCBS)

Functional Assessment Standardized Items (FASI)

Looking for the CMS electronic clinical quality measure (eCQM) Data Element Repository (DERep)? The DERep is an online searchable repository that provides all the data elements and definitions associated with eCQMs used in CMS quality reporting programs by eligible hospitals, critical access hospitals, providers, and clinicians.



Recent Announcements

View all
    View all