1. What is the Post Op 90 Day Calculator?

The Post Op 90 Day Calculator calculates the number of days between a surgery date and an end date, which is particularly useful for tracking the critical 90-day postoperative period.

2. How Does the Calculator Work?

The calculator uses a simple date difference calculation:

Where:

• \( Surgery\ Date \) — The date when the surgical procedure was performed
• \( End\ Date \) — The date to calculate days from surgery

Explanation: The calculation counts all calendar days between the two dates, including the surgery date but excluding the end date.

3. Importance of Post-Op Day Calculation

Details: The 90-day postoperative period is critical for monitoring complications, readmissions, and outcomes. Accurate day counting ensures proper follow-up and quality reporting.

4. Using the Calculator

Tips: Enter the surgery date and end date in the format YYYY-MM-DD. The calculator will compute the exact number of days between these dates.

5. Frequently Asked Questions (FAQ)

Q1: Why is the 90-day postoperative period important?
A: Many surgical quality measures track complications and outcomes within this window as it captures most surgery-related adverse events.

Q2: Does day counting include the surgery date?
A: Yes, the surgery date is counted as day 0, with each subsequent calendar day adding to the count.

Q3: How should I handle time zones for surgery dates?
A: Use the local date where the surgery was performed for consistency.

Q4: Can I calculate partial days or hours?
A: This calculator only computes full calendar days. For more precise timing, use a time-inclusive calculator.

Q5: What if my end date is before my surgery date?
A: The calculator will show a negative number, indicating the end date preceded the surgery.