SNOMED CT TRANSMISSION FILE
Field Definitions

Description	Data Type	Comment	XML Tag
Accession	numeric	Institutional specific numeric for unique visit or accession	accession_num
VMDB Institutional Code Number	char	VMDB assigned Institution Number	inst_id
Transaction Type	char	A for add, D for Delete, C for Correction, O for add and overwrite of patient signalment not visit data	trans_type
Medical Record	char	A institutional unique string not over 25 characters	pat_no
Species	numeric	SNOMED concept id (required if breed not included)	species
Breed	numeric	SNOMED concept id	breed
Date of Birth*	Date/Time	Time Optional (When unknown leave blank)	date _of_birth
Gender	char	Institutional specific codes will be converted to standard VMDB codes. C = male castrated F = female intact H = hermaphrodite M = male intact S = female spayed U = unknown/not stated X = multiple animals (litters/herds) T = male, neuter status unknown O = female, neuter status unknown	gender
Animal ID	char	Microchip, tattoo Maximum of 50 characters	animid
Chip Type	char	AVID, HomeAgain, etc	chip_type
Postal Code	char	US zip code or Canadian Postal Code	postal_code
Country	char	ISO 3166-1 Country Codes, Only for non-US postal codes	country_code
Weight	numeric		weight_value
Unit of Measure	char		weight_unit
Admit Date	Date/Time	yyyymmdd:hhmm (required)	admit_dt
Discharge Date	Date/Time	yyyymmdd:hhmm (required)	discharge_dt
Discharge Clinician	char	Institutional specific code	clinician
Institutional (Internal) Diagnosis ID #	char	Must be unique to the institution and never changed although it may be retired	snomed_group inst_dx_id
Discharge status*	char	0=alive, 5=died, 6=euthanatized, 7=discharged and referred	discharge _disposition
SNOMED Concept	numeric	SNOMED Concept id	snomed
Recheck*	char	0=Initial Diagnosis, 1=Recheck	recheck
Suspect*	numeric	0=Confirmed diagnosis, 1=Suspect or Probable	suspect

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*Additional Notes:

Necropsies should be coded and submitted using a SNOMED concept id, rather than as part of the discharge status as was done using SNVDO.

Line breaks and tabs, while not essential, make the document human readable.

We do not record color. There is no harm including it; it will be ignored for now.

There is no need to submit age. It is computed on the fly.

Some dates are formatted differently than others, however, consistent input will yield consistent results.

The order, suspect and recheck attributes of the concept_id element are optional. If left blank, suspect and recheck are set to "0".
If order is left blank, the order in which the concepts ids appear in the document is then used.

It is essential that, for a given snomed_group, either ALL or NONE of the concept_id elements have order attributes. The results are
undefined if some orders are defined and others are not.

 For an example of the SNOMED transmission file click here