Healthcare Information Division

Patient Discharge Data

Public Data Set

The California Office of Statewide Health Planning and Development (OSHPD) provides public data sets of inpatient, emergency care, and ambulatory surgery data collected from licensed California hospitals, hospital emergency departments, and licensed freestanding ambulatory surgery clinics in California. Each record within the data sets consists of either one inpatient discharge, or one outpatient encounter, also known as a service visit. Data included on the public data sets includes clinical, payer, and facility information. Beginning in 2013, with the release of 2012 data, the Public Use File has been modified to protect patient confidentiality and minimize the risk of disclosure of confidential patient data while preserving most of the file's clinical information.

Documentation in a pdf format that accompanied the prior versions of the public use file:

2012: Revised Public Use File Information and ordering instructions.
| 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | 1999


An inpatient discharge record is submitted each time a patient is treated in a licensed general acute care hospital in California. These facilities report their discharge data via the Medical Information Reporting for California System (MIRCal). The reported data includes patient demographic information, such as age, sex, county of residence, and race/ethnicity, diagnostic information, treatment information, disposition, total charges and expected source of payment. County Frequencies for hospital discharges by patient county of residence as well as ICD-9-CM Code Frequencies can be downloaded below.


Due to its size, the Patient Discharge Data file has been broken down into several frequency tables. These tables are grouped into two sections:

  • Frequencies by County
    These frequency tables display discharge totals and average length of stay for a selected group of data elements by county.
  • ICD-9-Code Frequencies
    These tables include diagnostic codes, condition present upon admission, procedure codes, and external injury codes.

Other Information

View information for Emergency Department & Ambulatory Surgery Data.

Patient Discharge Data (IP) Profile Reports

IP Profile Reports are collected through MIRCal and may be accessed by data type, facility ID# or facility name and report period begin and end dates. Each report consists of a two-page summary which represents the number and percentage of each data element for a given facility.

Attention Data Users: Please exercise caution when interpreting OSHPD data. The use of improper assumptions and analytical methods may result in erroneous or misleading conclusions. Conclusions drawn from OSHPD data are the sole responsibility of the user. Users should be aware that financial and utilization data products are based on a dynamic database that is constantly being updated. As a result, the same data item for a facility may change over time or be different between products.

If you are unable to download ZIP or EXE files, please e-mail the OSHPDWebmaster.
Extracted files can be e-mailed to users at no charge.

Page last revised: October 17, 2013 4:04 PM