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Pharmacy Inventory No Show Impact Estimator

The Pharmacy Inventory No Show Impact Estimator estimates how scheduled patient no-shows or missed pickups can tie up prepared inventory. It combines scheduled pickups, an expected no-show rate, average inventory units reserved per pickup, estimated carrying cost per unit per day, and the average number of days the stock remains set aside before it is returned, restocked, or otherwise resolved. The result shows expected missed pickups, units temporarily tied up, and a simple carrying-cost estimate.

This calculator is designed for operational inventory analysis rather than medication adherence or clinical decision-making. Actual handling of unclaimed prescriptions depends on pharmacy policy, product stability, storage conditions, controlled-substance procedures, payer rules, and whether prepared items can be returned to stock. The cost input is user supplied and should represent an internal planning estimate, not a reimbursement or accounting standard. Use zero for carrying cost if you only want the volume impact.

Planning inputs

pickups
%
units
USD
days
Result
—
Expected missed pickups
Inventory units tied up—
Estimated carrying cost—
Expected completed pickups—

1. Enter scheduled pickups
Use the number of patient pickups or scheduled dispensing visits in the period.

2. Set the expected no-show rate
Use a rate that reflects your own definition of a missed pickup.

3. Enter reserved inventory per pickup
Use the average number of inventory units prepared or held for one scheduled pickup.

4. Optional: enter carrying-cost assumptions
Add estimated cost per unit per day and average days tied up. Enter 0 for cost if you only need the inventory-volume result.

5. Review missed pickups and tied inventory
Use the outputs as a scenario estimate, then apply your pharmacy’s actual return-to-stock and handling rules.

Expected missed pickups = Scheduled pickups × No-show rateUnits tied up = Expected missed pickups × Units reserved per pickupEstimated carrying cost = Units tied up × Cost per unit per day × Days tied up

Where:

  • Scheduled pickups — booked or expected pickup visits in the period
  • No-show rate — missed-pickup percentage expressed as a decimal
  • Units reserved per pickup — average prepared or allocated inventory units
  • Cost per unit per day — user-entered carrying cost in USD
  • Days tied up — average time inventory remains unavailable for other use

Assumptions: Missed pickups leave the entered inventory quantity tied up for the entered duration. The model does not determine whether a product may legally or safely be returned to stock.

What the result means

This result is an operational planning estimate based only on the values entered above. It should be interpreted alongside workflow constraints and local policies.

For clinical, staffing, regulatory, or pharmacy decisions, apply the appropriate professional standards and organization-specific requirements; this calculator does not establish them.

Given:

  • 150 scheduled pickups
  • 8% no-show rate
  • 24 units reserved per pickup
  • $0.04 carrying cost per unit per day
  • 2.5 days tied up

Calculation:
Expected missed pickups = 150 × 0.08 = 12
Units tied up = 12 × 24 = 288 units
Estimated carrying cost = 288 × $0.04 × 2.5 = $28.80

Result: 12 expected missed pickups

Interpretation: Under these assumptions, missed pickups temporarily tie up about 288 inventory units and create an estimated $28.80 of carrying cost before resolution.

Is a missed pickup the same as a prescription no-show?

Use the definition that matches your own workflow and historical data. The calculator is flexible, but consistency matters when comparing periods.

Can I enter zero carrying cost?

Yes. The calculator will still estimate missed pickups and units tied up, while the cost output remains zero.

Does this tell me when an unclaimed prescription can be returned to stock?

No. Return-to-stock timing and eligibility depend on product characteristics, pharmacy policy, storage conditions, and applicable rules.

What if some missed pickups are completed the next day?

Reflect that in the average days tied up rather than treating every missed pickup as permanently lost. The model focuses on temporary inventory unavailability.

How can I use the result with an inventory-capacity estimate?

Compare tied-up units with usable stock to see how missed pickups reduce short-term flexibility. Keep product-specific restrictions separate from this generalized volume model.