DiraChart MDS item reference

A1900Section Av1.20.1Manual page A-38

Admission Date (Date this episode of care in this facility

began) (cont.)

Quick coding

Answer Codes

Use the item-specific response choices below when structured codes apply.

Response format: Date entry

A1900 — Admission Date (Date this episode of care in this facility
Enter the value requested for this item using the current CMS date entry format. Verify the entry against Manual page A-38 and the supporting facility documentation.

Item-specific instructions

Coding Guidance

Review what the item asks, how to choose the response, and what should be verified before submission.

RAI Manual v1.20.1

Coding Instructions


Enter the date this episode of care in this facility began. Use the format: Month-Day-
Year: XX-XX-XXXX. For example, October 12, 2010, would be entered as 10-12-2010.

The Admission Date may be the same as the Entry Date (A1600) for the entire stay (i.e.,
if the resident is never discharged).

Manual page A-38
RAI Manual v1.20.1

Coding Tips

and Special Populations

Both swing bed facilities and nursing homes must apply the above instructions for coding
items A1600 through A1900 to determine whether a patient or resident is an
admission/entry or reentry.

In determining if a patient or resident returns to the facility within 30 days, the day of
discharge from the facility is not counted in the 30 days. For example, a resident
discharged return anticipated on December 1 would need to return to the facility by
December 31 to meet the “within 30 days” requirement.
A1900: Admission Date (Date this episode of care in this facility
began) (cont.)

If the Type of Entry for this assessment is an Admission (A1700 = 1), the Admission
Date (A1900) and the Entry Date (A1600) must be the same.

If the Type of Entry for this assessment is a Reentry (A1700 = 2), the Admission Date
(A1900) will remain the same, and the Entry Date (A1600) must be later than the date in
A1900.

Item A1900 (Admission Date) is tied to items A1600 (Entry Date), A1700 (Type of
Entry), and A1805 (Entered From). It is also tied to the concepts of a “stay” and an
“episode.” A stay is a set of contiguous days in the facility and an episode is a series of
one or more stays that may be separated by brief interruptions in the resident’s time in the
facility. An episode continues across stays until one of three events occurs: the resident is
discharged with return not anticipated, the resident is discharged with return anticipated
but is out of the facility for more than 30 days, or the resident dies in the facility.

A1900 (Admission Date) should remain the same on all assessments for a given episode
even if it is interrupted by temporary discharges from the facility. If the resident is
discharged and reenters within the course of an episode, that will start a new stay. The
date in item A1600 (Entry Date) will change, but the date in item A1900 (Admission
Date) will remain the same. If the resident returns after a discharge return not anticipated
or after a gap of more than 30 days outside of the facility, a new episode would begin and
a new admission would be required.

When a resident is first admitted to a facility, item A1600 (Entry Date) should be coded
with the date the person first entered the facility, and A1700 (Type of Entry) should be
coded as 1, Admission. The place where the resident was admitted from should be
documented in A1805 (Entered From), and the date in item A1900 (Admission Date)
should match the date in A1600 (Entry Date). These items would be coded the same way
for all subsequent assessments within the first stay of an episode. If the resident is briefly
discharged (e.g., brief hospitalization) and then reenters the facility, a new (second) stay
would start, but the current episode would continue. On the Entry Tracking Record and
on subsequent assessments for the second stay, the date in A1600 (Entry Date) would
change depending on the date of reentry, and item A1700 (Type of Entry) would be
coded as 2, Reentry. Item A1805 (Entered From) would reflect where the resident was
prior to this reentry, and item A1900 (Admission Date) would continue to show the
original admission date (the date that began their first stay in the episode).

Manual page A-38
MDS item matrix

Assessment Applicability

See where this item applies across Nursing Home, Swing Bed, discharge, required-use, OBRA, and program or policy columns.

15 relationships5 groups
Official CMS source

Verify in the CMS Source

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SourceCMS MDS 3.0 RAI Manual v1.20.1
Effective2025-10-01
Mapped locationManual page A-38
Reference details

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