Massachusetts All Payer Claims Database

MA APCD Overview Information



Steps to Request the Data
(Currently Available: Release 7.0 - Calendar Years 2013-2017)

Government Requests

Non-Government Requests

MA APCD Release 7.0 Documentation


MA APCD Documentation Archive

User Support / Contact Us

MA APCD / Case Mix
User Workgroup

(bi-monthly webinars)
(include your IRBNet Number and/or name of PI, if a current data user)


MA APCD Technical Data Profiles

Information for Data Submitters


Currently Available: Release 7.0 - Calendar Years 2013-2017

The Massachusetts All Payer Claims Database (MA APCD) is the most comprehensive source of health claims data from public and private payers in Massachusetts. With information on the vast majority of Massachusetts residents, the MA APCD promotes transparency, and affords a deep understanding of the Massachusetts health care system. 

CHIA's enabling statute allows for the collection of data from commercial payers, third party administrators and public programs (Medicare and MassHealth, Massachusetts’ Medicaid program).

Please visit CHIA’s Regulations page for more specific information.

These data sets come both from medical insurers and from specialty insurers and administrators of “carved-out” services including pharmacy, mental health/chemical dependency, dental, and vision.

It is used by health care providers, health plans, researchers, and others to address a wide variety of issues, including price variation, population health and quality measurement. To learn more about how MA APCD data is used, view historical applications for data that CHIA has received from researchers and other entities.

How is MA APCD unique?

While several states have All Payer Claims Databases, the MA APCD has a unique focus on the efficiencies to be achieved by having a single independent agency – as opposed to multiple state agencies - collect data from payers.

CHIA offers the additional benefit of having the infrastructure to work collaboratively with payers to improve data quality and completeness and having the specialized staff needed to normalize data across payers to support cross-payer analyses.


Projects Using MA APCD Data

CHIA Research

External Research


Want to learn more?

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