Healthcare data sets table and record analysis
Build a three-column table for DEEDS, MDS, OASIS, UACDS and UHDDS, research four required data elements for each, then analyse an inpatient record against your UHDDS elements and mark yes or no for each.
Editorial process
Last reviewed · August 13, 2026
Five data sets, five different settings
The five data sets in this exercise are not variations on one idea, and getting their settings right is what makes the table meaningful. UHDDS is the inpatient discharge abstract, UACDS its ambulatory counterpart, MDS is the resident assessment used in long-term care, OASIS is the home health assessment, and DEEDS is the emergency department data specification. Each was created by a different body for a different reporting purpose, and each therefore collects different things: MDS and OASIS are clinical assessment instruments completed on a schedule, while UHDDS and UACDS are abstracts of a completed encounter. Say that distinction somewhere in the submission, because it explains why the four data elements you find for MDS look nothing at all like the four you find for UHDDS, and an assessor reading the table can tell instantly whether you understood the difference or simply copied five lists out of five different manuals.
Part III is the part that is actually assessed for judgement, and it is a compliance test rather than a research task. You take the UHDDS elements you put in your own third column and go looking for each of them in a real inpatient record, marking yes or no. The discipline is to answer honestly: a no is a finding, not a failure, and a documentation gap in a real record is exactly what the exercise is designed to surface. Be precise about what counts as present, since UHDDS elements are defined tightly and a record containing something similar does not satisfy the definition. Principal diagnosis, for instance, has a specific meaning as the condition established after study to be chiefly responsible for the admission, so a discharge summary listing several diagnoses without designating one does not contain that element. Cite the manual definitions you are testing against so the yes and no answers are defensible.
Likely learning objectives
Inferred from the brief — check these against your own rubric.
- 01Distinguish the care settings and purposes of five standard healthcare data sets.
- 02Separate assessment instruments from encounter abstracts.
- 03Identify required data elements from a data set's own specification.
- 04Test documentation against a defined data element rather than against a similar concept.
- 05Report documentation gaps accurately.
Read the full question
Review every instruction before using the planning guidance that follows.
Turn the brief into deliverables
- 01A three-column table covering DEEDS, MDS, OASIS, UACDS and UHDDS.
- 02The first two columns copied from the lesson table.
- 03Four required data elements for each data set in the third column.
- 04An analysis of the supplied inpatient record against your UHDDS elements.
- 05A yes or no after each UHDDS data element indicating whether it was found.
Table, research, record analysis
The five data sets and their settings
Inpatient, ambulatory, long-term care, home health and emergency, with the body behind each.
Abstracts against assessments
Why MDS and OASIS collect assessment data while UHDDS and UACDS abstract an encounter.
Four elements each
Required data elements pulled from each data set's own specification.
Testing the record
Each UHDDS element searched for in the inpatient record, yes or no.
What the gaps mean
Brief comment on any element the record does not satisfy.
The manuals, not a summary of them
Recommended databases
- CMS manuals
- CDC and NCHS specifications
- AHIMA resources
- The Peden textbook
- Federal Register notices
Search sequence
- 1.Find the official manual or specification for each of the five data sets.
- 2.Pull four required elements from each specification rather than from a summary.
- 3.Read the UHDDS definitions closely, especially principal diagnosis and principal procedure.
- 4.Work through the supplied inpatient record element by element before marking anything.
- 5.Note where a record contains something similar but not identical to the defined element.
Reference shortlist
These are authoritative starting points, not a ready-made bibliography. A qualified reviewer must confirm that each source fits the assignment and supports the claim beside which it is cited.
Nothing here is cleared for citation until you have read it.
- 01
Minimum Data Set (MDS) 3.0 Resident Assessment Instrument (RAI) Manual
Centers for Medicare & Medicaid Services · 2024
The MDS specification itself, for the four required elements and the assessment schedule.
- 02
OASIS User Manuals
Centers for Medicare & Medicaid Services · 2024
The OASIS specification, and the home health setting that explains its contents.
- 03
ICD-10
Centers for Medicare & Medicaid Services · 2024
The coding system behind the diagnosis and procedure elements of UHDDS.
- 04
AHIMA Home
American Health Information Management Association · 2024
Professional guidance on data set standards and documentation integrity for the record analysis.
Review before submission
Common mistakes
- Treating all five data sets as if they collected similar things.
- Confusing UACDS with UHDDS, since only one letter differs.
- Listing data elements from a secondary summary rather than the specification.
- Marking yes because something similar appears in the record.
- Avoiding no answers, which removes the point of the exercise.
- Omitting the setting or purpose that explains each data set's contents.
Submission checklist
- All five data sets appear in the table.
- Four data elements are listed for each.
- The care setting and purpose of each data set is identifiable.
- Every UHDDS element carries a yes or a no from the record analysis.
- Element definitions are cited from an authoritative source.
- At least one honest no appears if the record does not contain an element.
Use this guide to plan and review your own work. Follow your institution's rules and read our academic-integrity policy.

Written by
Aaron Bishop
MA, Education
assignment interpretation and research-methods coaching across disciplines
Aaron leads the EssayCrackers editorial desk. He works on how assignment briefs are read — what a rubric is actually asking for, and where students most often answer a different question than the one set.

Reviewed by
Dr. Nathan Cole
PhD, Rhetoric & Composition
Argumentation and thesis development
Nathan teaches first-year composition and directs a university writing center. He reviews EssayCrackers guides for argumentative soundness and citation accuracy.