Order Entry & Processing Study Guide

Order Entry and Processing accounts for 21.25% of the PTCE (approximately 19 out of 90 scored questions). This domain tests your knowledge of prescription intake and processing, NDC numbers, insurance and third-party billing, days supply calculations, inventory management, compounding procedures, unit dose packaging, pharmacy automation and technology, labeling requirements, and drug utilization review (DUR). This is a practical domain that tests how well you understand the daily operations of a pharmacy.

A valid prescription must contain: patient name, date of birth or address, date written, drug name (brand or generic), strength, dosage form, quantity, directions for use (sig), number of refills, and prescriber signature. For controlled substances, the prescriber DEA number is also required. The pharmacy technician receives the prescription, enters it into the pharmacy software, and processes it for dispensing. Key processing steps: verify patient identity, check for drug allergies, perform drug utilization review (DUR), process insurance claims, fill the prescription, and prepare it for pharmacist verification. Common sig abbreviations: PO (by mouth), PRN (as needed), BID (twice daily), TID (three times daily), QID (four times daily), QHS (at bedtime), AC (before meals), PC (after meals), OU (both eyes), AU (both ears).

The National Drug Code (NDC) is a unique 10-digit identifier for each drug product. It has three segments: Labeler code (first 4-5 digits): identifies the manufacturer, repacker, or distributor. Product code (middle 3-4 digits): identifies the specific drug, strength, and dosage form. Package code (last 1-2 digits): identifies the package size and type. The NDC is used for insurance billing and inventory management. Insurance billing concepts: DAW (Dispense As Written) codes indicate whether generic substitution is permitted. DAW 0: No product selection indicated (generic okay). DAW 1: Substitution not allowed by prescriber. DAW 2: Patient requested brand. Prior Authorization (PA) is required for some medications before the insurance will cover them. Copay, coinsurance, and deductible are patient cost-sharing components. Coordination of Benefits (COB) applies when a patient has multiple insurance plans.

Proper inventory management ensures medications are available when needed while minimizing waste. Key concepts: Perpetual inventory is a continuous record of stock levels, updated with each transaction. Point of sale (POS) systems automatically adjust inventory when prescriptions are dispensed. PAR levels (periodic automatic replenishment) set minimum and maximum quantities for each item. First In, First Out (FIFO) rotation ensures older stock is used before newer stock to prevent expiration. Just-In-Time (JIT) ordering minimizes inventory on hand by ordering frequently in smaller quantities. Drug recalls require immediate identification and removal of affected products. DEA Form 106 is used to report theft or significant loss of controlled substances. DEA Form 41 is used for authorized destruction of controlled substances. 340B Drug Pricing Program allows eligible healthcare organizations to purchase outpatient drugs at reduced prices.

Modern pharmacies use technology to improve accuracy and efficiency. Key systems: Automated dispensing cabinets (ADCs) like Pyxis and Omnicell are used in hospitals for floor stock and controlled substance management. Robotic dispensing systems (e.g., ScriptPro) count and label medications. E-prescribing allows prescribers to send prescriptions electronically to the pharmacy, reducing transcription errors. Interactive Voice Response (IVR) systems handle automated refill requests. Barcode scanning at each step of the dispensing process verifies correct drug selection. Telepharmacy allows pharmacists to supervise remote dispensing. Clinical Decision Support Systems (CDSS) alert pharmacists to potential drug interactions, allergies, and dosing issues.

Order Entry questions are practical and often scenario-based. Practice reading and interpreting prescription sig codes until they are automatic. Memorize the NDC number format and DAW codes. Understand insurance billing basics (copay vs. coinsurance, PA requirements, COB). Know your pharmacy technology systems and their purposes. PTCBprep by Arteura includes practice questions that simulate real prescription processing scenarios you will encounter on the PTCE.