Massachusetts All Payer Claims Database

MA APCD Overview Information


Steps to Request the Data
(Currently Available: Release 6.0 - Calendar Years 2012-2016)

Government Requests

Non-Government Requests

MA APCD Release 6.0 Documentation


(Limited Data Set-LDS)

MA APCD Documentation Archive

User Support / Contact Us

MA APCD / Case Mix
User Workgroup
(include your IRBNet Number and/or name of PI, if a current data user)

MA APCD Technical Data Profiles

Information for Data Submitters


Projects Using MA APCD Data

CHIA Research

External Research

Currently Available:
Release 6.0 - Calendar Years 2012-2016

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. 


As part of CHIA's continuing APCD quality assurance work, a series of payer-specific technical data profiles are available as a resource for APCD data users.

Please note: These dashboards do not contain protected health information.

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.


Sign up to join the MA APCD / Case Mix User Group Mailing List