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Observation Stays Data Elements

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Outpatient Observation Stays in Massachusetts - Data Elements

The following data elements are available with your purchase of the database or custom reports.

  • MA DPH Hospital ID Number

  • Hospital ID Number for Multiple Sites

  • Patient Residential 5 Digit Zip Codes

  • M = Male, F = Female, U = Unknown

  • Age of Patient in Years, if > 1

  • Age of Patient in Weeks, if < 1

  • Four Digit Year: Beginning Service Date

  • Two Digit Month: Beginning Service Date

  • Four Digit Year: End of Service Date

  • Two Digit Month: End of Service Date

  • Patient Race

  • Patient Disposition (departure status)

  • Observation Visit Status

  • Originating Observation Visit Source

  • Secondary Observation Visit Source

  • Primary Source of Payment

  • Secondary Source of Payment

  • Grand Total of All Charges Associated with Stay

  • Other Primary Caregiver Responsible for Patient

  • ICD-9 Principal Diagnosis (5 digit)

  • ICD-9 Associated Diagnosis

  • ICD-9 Associated Diagnosis

  • ICD-9 Associated Diagnosis

  • ICD-9 Associated Diagnosis

  • ICD-9 Associated Diagnosis

  • Principal ICD-9 Procedure (4 digit)

  • ICD-9 Associated Procedure

  • ICD-9 Associated Procedure

  • ICD-9 Associated Procedure

  • CPT-4 code (5 digit)

  • CPT-4 code (5 digit)

  • CPT-4 code (5 digit)

  • CPT-4 code (5 digit)

  • CPT-4 code (5 digit)

  • HCFA DRG (version 18.0)

  • HCFA MDC (version 18.0)

  • Clinical Subspecialty Assignment

  • Zip Code Assignment to Town Identifier

  • The Time the Patient Became Observation Stay

  • Amount of Time in Observation (in hours)


For more information on MHDC Data, please contact us via e-mail or at (781) 419-7800. We welcome your further questions & look forward to your participation in our work and our events!