---
title: "URSA-PHARM | PDC Medication Adherence"
slug: "pharm-reports-ursa-pharm-pdc-medication-adherence"
updated: 2025-06-26T17:18:33Z
published: 2025-06-26T17:18:33Z
canonical: "docs.ursahealth.com/pharm-reports-ursa-pharm-pdc-medication-adherence"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ursahealth.com/llms.txt
> Use this file to discover all available pages before exploring further.

# URSA-PHARM | PDC Medication Adherence

## Overview

Proportion of Days Covered ("PDC") measures the percent of days during an medication therapy episode with a positive supply of across three major medication types which are tracked in CMS Stars ratings; Oral Antidiabetics, Oral ACEI/ARBs, and Statins. This report introduces users to the concept of PDC, provides versions of these measures that are geared towards practice operations, and contains pre-built boards that show performance across populations, payors, and action lists of patients currently failing to meet the PDC target of 80% of days within an episode.

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## Use this report to

- Develop an understanding of the configuration of a PDC measure
- Analyze historical and monitor ongoing performance across PDCs for Oral Antidiabetics, Oral ACEI/ARBs, and Statins.
- Generate lists of patients requiring intervention to meet their PDC target.
- Measure the opportunity for deploying interventions such as 90-day fills to improve adherence.

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## Potential takeaways

- What is PDC performance across payors and plans?
- Which patients are falling below 80% of PDC?
- Which patients currently falling below 80% are redeemable for the 12 month measurement period?
- Which patients have multiple open episodes?
- Which providers are owning the prescriptions of these adherence medications?
- Who is/are the providers prescribing the medications for this episode and is it the PCP or another provider?
- What percent of PDC medications are being prescribed for a 90-day supply?
- Which providers/patients could be switched to a 90-day supply?