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NASS Description of Data Elements
The Nationwide Ambulatory Surgery Sample (NASS) is a set of ambulatory surgery databases included in the HCUP family. These databases are created by AHRQ through a Federal-State-Industry partnership.
 
DISPUNIFORM - Disposition of patient, uniform coding
 
Documentation Sections:
General Notes
Uniform Values
General Notes
 

DISPUNIFORMindicates the disposition of the patient at discharge (routine, transfer to another hospital, died, etc.). To ensure uniformity of coding across data sources, DISPUNIFORMcombines detailed categories in the more general groups. For example,

  • Transfers to facilities other than short-term hospitals (skilled nursing facilities, intermediate care facilities, and other type of facilities) are coded as DISPUNIFORM= 5.
  • Transfers to Home Health Care (including IV providers and Hospice home care) are coded as DISPUNIFORM= 6.

DISPUB04 and DISPUB92 has more detailed categories for transfers and Home Health Care and distinguishes patients that died in the hospital from those that died outside of the hospital.

The following table lists how the values of DISPUB04 map to the values of DISPUNIFORM:

Coding of DISPUB04 into DISPUNIFORM
DISPUB04 DISPUNIFORM
Value Description Value Description
1 Discharged to Home or Self Care (Routine Discharge) 1 Routine
21 Court/Law Enforcement
30 Still a patient (allowable value for outpatient data starting in data year 2016)
81 Discharged to Home or Self Care with a Planned Acute Care Hospital Inpatient Readmission (Effective 10/1/13)
87 Discharged/Transferred to Court/Law Enforcement with a Planned Acute Care Hospital Inpatient Readmission (Effective 10/1/13)
2 Discharged/transferred to a Short-Term Hospital for Inpatient Care 2 Transfer to Short-term Hospital
5 Effective 10/1/07: Discharged/transferred to a Designated Cancer Center or Children's Hospital
9 Admitted as an inpatient to this hospital - valid only on outpatient data
43 Discharged/transferred to a Federal Health Care Facility
66 Discharged/transferred to a Critical Access Hospital (CAH)
82 Discharged/Transferred to a Short Term General Hospital for Inpatient Care with a Planned Acute Care Hospital Inpatient Readmission (Effective 10/1/13)
85 Discharged/Transferred to a Designated Cancer Center or Children's Hospital with a Planned Acute Care Hospital Inpatient Readmission (Effective 10/1/13)
88 Discharged/Transferred to a Federal Health Care Facility with a Planned Acute Care Hospital Inpatient Readmission (Effective 10/1/13)
94 Discharged/Transferred to a Critical Access Hospital (CAH) with a Planned Acute Care Hospital Inpatient Readmission (Effective 10/1/13)
3 Discharged/transferred to a Skilled Nursing Facility (SNF) 5 Transfer Other: Includes Skilled Nursing Facility (SNF), Intermediate Care Facility (ICF), Another Type of Facility
4 Discharged/transferred to an Intermediate Care Facility (ICF)
5 Effective prior to 10/1/07: Discharged/transferred to another type of institution not defined elsewhere
51 Hospice - Medical Facility
61 Discharged/transferred to a Hospital-Based Medicare approved Swing Bed
62 Discharged/transferred to an Inpatient Rehabilitation Facility (IRF) including Rehabilitation Distinct part unit of a hospital
63 Discharged/transferred to a Medicare certified Long Term Care Hospital (LTCH)
64 Discharged/transferred to a Nursing Facility certified by Medicaid, but not certified by Medicare
65 Discharged/transferred to a Psychiatric Hospital or Psychiatric distinct part unit of a hospital
69 Discharged/transferred to a Designated Disaster Alternative Care Site (Effective 10/1/13)
70 Effective 10/1/07: Discharged/transferred to another type of institution not defined elsewhere
83 Discharged/Transferred to a Skilled Nursing Facility (SNF) with Medicare Certification with a Planned Acute Care Hospital Inpatient Readmission (Effective 10/1/13)
84 Discharged/Transferred to a Facility that Provides Custodial or Supportive Care with a Planned Acute Care Hospital Inpatient Readmission (Effective 10/1/13)
89 Discharged/Transferred to a Hospital-based Medicare Approved Swing Bed with a Planned Acute Care Hospital Inpatient Readmission (Effective 10/1/13)
90 Discharged/Transferred to an Inpatient Rehabilitation Facility (IRF) including Rehabilitation Distinct Part Units of a Hospital with a Planned Acute Care Hospital Inpatient Readmission (Effective 10/1/13)
91 Discharged/Transferred to a Medicare Certified Long Term Care Hospital (LTCH) with a Planned Acute Care Hospital Inpatient Readmission (Effective 10/1/13)
92 Discharged/Transferred to a Nursing Facility Certified Under Medicaid but not Certified Under Medicare with a Planned Acute Care Hospital Inpatient Readmission (Effective 10/1/13)
93 Discharged/Transferred to a Psychiatric Hospital or Psychiatric Distinct Part Unit of a Hospital with a Planned Acute Care Hospital Inpatient Readmission (Effective 10/1/13)
95 Discharged/Transferred to Another Type of Health Care Institution not Defined Elsewhere in the Code List with a Planned Acute Care Hospital Inpatient Readmission (Effective 10/1/13)
6 Discharged/transferred to Home under care of Organized Home Health Service Organization 6 Home Health Care (HHC)
8 Home IV Provider
50 Hospice-Home
86 Discharged/Transferred to a Home Under Care of Organized Home Health Service Organization with a Planned Acute Care Hospital Inpatient Readmission (Effective 10/1/13)
7 Left Against Medical Advice or Discontinued Care 7 Against Medical Advice (AMA)
20 Expired 20 Died
40 Expired at home 99 Discharge alive, destination unknown
41 Expired in a Medical Facility
42 Expired - place unknown
99 Discharged alive, destination unknown
. Missing . Missing
.A Invalid .A Invalid

The next table lists how the values of DISPUB92 map to the values of DISPUNIFORM:

Coding of DISPUB92 into DISPUNIFORM
DISPUB92 DISPUNIFORM
Value Description Value Description
1 Routine 1 Routine
71 Another institution for outpatient services. Value was added beginning in the 2000 HCUP data.
72 This institution for outpatient services. Value was added beginning in the 2000 HCUP data.
2 Short-term Hospital 2 Transfer to Short-term Hospital
9 Admitted as an inpatient to this hospital. Valid only on outpatient data. Value was added beginning in the 2001 HCUP data.
43 Federal health facility
3 Skilled Nursing Facility (SNF) 5 Transfer Other: Includes Skilled Nursing Facility (SNF), Intermediate Care Facility (ICF), Another Type of Facility
4 Intermediate Care Facility (ICF)
5 Another Type of Facility
51 Hospice - Medical Facility
61 Within this institution to a hospital-based Medicare approved swing bed. Value was added beginning in the 2000 HCUP data.
62 Discharge, transferred to another rehabilitation facility including rehabilitation distinct part units of a hospital. Value was added beginning in 2001 HCUP data.
63 Discharge, transferred to a long term care hospital swing bed. Value was added beginning in the 2001 HCUP data.
64 Discharge, transferred to a nursing facility certified by Medicaid, but not certified by Medicare. Value was added beginning in the 2002 HCUP data.
65 Discharge, transferred to a psychiatric hospital or psychiatric distinct unit of a hospital. Value was added beginning in the 2004 HCUP data.
6 Home Health Care (HHC) 6 Home Health Care (HHC)
8 Home IV Provider
50 Hospice-Home
7 Against Medical Advice (AMA) 7 Against Medical Advice (AMA)
20 Died in Hospital 20 Died
40 Died at Home. Prior to the 2001 data, value 40 "Died at Home" was mapped to missing (.). 99 Discharge alive, destination unknown. Value was added beginning in the 2001 data.
41 Died in Medical Facility. Prior to 2001 data, value 41 "Died in Medical Facility" was mapped to missing (.).
42 Died, place unknown. Prior to the 2001 data, value 42 "Died, place unknown" was mapped to missing (.).
99 Discharged alive, destination unknown. Value was added beginning in the 2001 data.
. Missing . Missing
.A Invalid .A Invalid

DISP_X retains the disposition of patient as provided by the data source.

 
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Uniform Values
VariableDescriptionValueValue Description
DISPUNIFORMDisposition of patient, uniform coding1Routine
2Transfer to short-term hospital
5Transfer other: includes Skilled Nursing Facility (SNF), Intermediate Care Facility (ICF), and another type of facility
6Home Health Care (HHC)
7Against medical advice (AMA)
20Died in hospital
21Discharged/transferred to court/law enforcement
99Discharged alive, destination unknown, beginning in 2001
.Missing
.AInvalid
 
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Internet Citation: HCUP NASS Description of Data Elements. Healthcare Cost and Utilization Project (HCUP). August 2019. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/db/vars/dispuniform/nassnote.jsp.
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Last modified 8/14/19