EMS Data Dictionary
Single source of truth across all national EMS data standards
Total Elements
500
Total Code Values
2,765
Validation Rules
8,176
Sections
35
Reference Tools
Element Browser
Browse all NEMSIS elements with definitions, code values, and validation rules.
Scope of Practice
National EMS Scope of Practice Model — authorized skills by certification level.
Rule Search
Search validation rules across all states by element ID or rule content.
Quality Measures
21 NEMSQA performance measures with NEMSIS element linkage and clinical domain grouping.
Browse by Section
Agency
dAgency
3 elements8 rules
Airway
eAirway
11 elements201 rules
Arrest
eArrest
19 elements742 rules
Crew
eCrew
3 elements116 rules
Custom Configuration
eCustomConfiguration
9 elements0 rules
Custom Results
eCustomResults
3 elements26 rules
Device
eDevice
12 elements27 rules
Dispatch
eDispatch
6 elements40 rules
Disposition
eDisposition
31 elements1,009 rules
Exam
eExam
24 elements164 rules
History
eHistory
20 elements185 rules
Injury
eInjury
29 elements305 rules
Labs
eLabs
8 elements28 rules
Medications
eMedications
13 elements442 rules
Narrative
eNarrative
1 elements42 rules
Other
eOther
22 elements109 rules
Outcome
eOutcome
15 elements9 rules
Patient
ePatient
25 elements476 rules
Payment
ePayment
59 elements31 rules
Procedures
eProcedures
15 elements387 rules
Protocols
eProtocols
2 elements17 rules
Record
eRecord
4 elements30 rules
Response
eResponse
23 elements451 rules
Scene
eScene
25 elements421 rules
Situation
eSituation
20 elements520 rules
Times
eTimes
17 elements985 rules
Vitals
eVitals
34 elements674 rules
s Agency
sAgency
3 elements0 rules
s Configuration
sConfiguration
6 elements0 rules
sd Custom Configuration
sdCustomConfiguration
9 elements0 rules
se Custom Configuration
seCustomConfiguration
9 elements0 rules
s Element
sElement
1 elements0 rules
s Facility
sFacility
15 elements0 rules
s Software
sSoftware
3 elements0 rules
s State
sState
1 elements0 rules