---
title: "Kidney Transplantation Surgery Encounter"
slug: "ckd-key-concepts-kidney-transplantation-surgery-encounter"
updated: 2023-05-16T21:47:09Z
published: 2023-05-16T21:47:09Z
canonical: "docs.ursahealth.com/ckd-key-concepts-kidney-transplantation-surgery-encounter"
stale: true
---

> ## 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.

# Kidney Transplantation Surgery Encounter

## **Definition**

An encounter with a kidney transplantation surgery performed. The surgery is identified via MS-DRG, ICD-10-PCS, or CPT/HCPCS procedure code associated with a hospital inpatient admission encounter.

## **Purpose**

Used in the URSA-CKD module to identify patients with ESRD and to characterize the circumstances under which the patient progresses to ESRD status.

## **Related objects**

- [**Document Aggregator for URSA-CKD Concepts**](/v1/docs/ckd-objects-document-aggregator-for-ursa-ckd-concepts)
- [**Hospital Inpatient Admission Encounter Document Aggregator**](https://docs.ursahealth.com/docs/core-objects-hospital-inpatient-admission-encounter-document-aggregator)
- [**Hospital Inpatient Admission Encounters**](https://docs.ursahealth.com/docs/core-objects-hospital-inpatient-admission-encounters)
- [**Kidney Transplantation Surgery Encounters**](/v1/docs/ckd-objects-kidney-transplantation-surgery-encounter)

## **Detailed narrative of logic**

1. As implemented in **Kidney Transplantation Surgery Encounters**, first, all documents with a qualifying kidney transplantation surgery ICD-10-PCS, CPT/HCPCS, or MS-DRG code are obtained from **Document Aggregator for URSA-CKD Concepts** using a restriction on Is Kidney Transplant Code = 1 (see value set KIDNEY TRANSPLANTATION for value types ICD-10-PCS, HCPCS, and MS-DRG).
2. These qualifying documents are then filtered down to those associated with a hospital inpatient admission encounter, as defined in the URSA-CORE logic, as implemented in **Hospital Inpatient Admission Encounter Document Aggregator** and **Hospital Inpatient Admission Encounters**.
3. The resulting collection of documents (i.e., documents for a performed kidney transplantation surgery associated with an inpatient admission) are then collapsed down to a hospital inpatient admission encounter grain size, with the qualifying surgery ICD-10-PCS, CPT/HCPCS, and/or MS-DRG codes published.