prescriptions

prescriptions

The prescriptions table provides information about prescribed medications. Information includes the name of the drug, coded identifiers including the Generic Sequence Number (GSN) and National Drug Code (NDC), the product strength, the formulary dose, and the route of administration.

Links to

• pharmacy on pharmacy_id
• emar on pharmacy_id

Table columns

Name	Postgres data type
subject_id	INTEGER NOT NULL
hadm_id	INTEGER NOT NULL
pharmacy_id	INTEGER NOT NULL
poe_id	VARCHAR(25)
poe_seq	INTEGER
order_provider_id	VARCHAR(10)
starttime	TIMESTAMP(3)
stoptime	TIMESTAMP(3)
drug_type	VARCHAR(20) NOT NULL
drug	VARCHAR(255) NOT NULL
formulary_drug_cd	VARCHAR(50)
gsn	VARCHAR(255)
ndc	VARCHAR(25)
prod_strength	VARCHAR(255)
form_rx	VARCHAR(25)
dose_val_rx	VARCHAR(100)
dose_unit_rx	VARCHAR(50)
form_val_disp	VARCHAR(50)
form_unit_disp	VARCHAR(50)
doses_per_24_hrs	REAL
route	VARCHAR(50)

subject_id

subject_id is a unique identifier which specifies an individual patient. Any rows associated with a single subject_id pertain to the same individual.

hadm_id

hadm_id is an integer identifier which is unique for each patient hospitalization.

pharmacy_id

An identifier which links administrations in emar to pharmacy information in the pharmacy table.

poe_id, poe_seq

These columns allow linking prescriptions to associated orders in the poe table.

order_provider_id

order_provider_id provides an anonymous identifier for the provider who initiated the order. Provider identifiers follow a consistent pattern: the letter “P”, followed by either three numbers, followed by two letters or two numbers. For example, “P003AB”, “P00102”, “P1248B”, etc. Provider identifiers are randomly generated and do not have any inherent meaning aside from uniquely identifying the same provider across the database.

starttime, stoptime

The prescribed start and stop time for the medication.

drug_type

The component of the prescription which the drug occupies. Can be one of ‘MAIN’, ‘BASE’, or ‘ADDITIVE’.

drug

A free-text description of the medication administered.

formulary_drug_cd

A hospital specific ontology used to order drugs from the formulary.

gsn

The Generic Sequence Number (GSN), a coded identifier used for medications.

ndc

The National Drug Code (NDC), a coded identifier which uniquely identifiers medications.

prod_strength

A free-text description of the composition of the prescribed medication (e.g. ‘12 mg / 0.8 mL Oral Syringe’, ‘12.5mg Tablet’, etc).

form_rx

The container in which the formulary dose is delivered (e.g. ‘TABLET’, ‘VIAL’, etc).

dose_val_rx

The prescribed dose for the patient intended to be administered over the given time period.

dose_unit_rx

The unit of measurement for the dose.

form_val_disp

The amount of the medication which is contained in a single formulary dose.

form_unit_disp

The unit of measurement used for the formulary dosage.

doses_per_24_hrs

The number of doses per 24 hours for which the medication is to be given. A daily dose would result in doses_per_24_hrs: 1, bidaily (BID) would be 2, and so on.

route

The route of administration for the medication.