Recent Articles

TTT error: “validateST invariant is violated”

June 30th, 2014|0 Comments

When validating a C-CDA document using the official US government TTT validator that is used in Meaningful Use Stage Two certification, one of the error messages that can appear take this form (click to enlarge […]

The US Realm Header template

May 11th, 2014|0 Comments

Document Templates
The article What is a CDA Template?,  introduces the template concept in CDA. In particular, it notes that C-CDA document templates define overall rules for an entire CDA document. This includes both rules that […]

Entries required/optional C-CDA section template flavors

May 1st, 2014|0 Comments

Section Templates
The article What is a CDA Template?,  introduces the template concept in CDA. In particular, C-CDA section templates define the rules for sections of the structured body in C-CDA documents. Each section template begins at […]

The use of serviceEvent in C-CDA documents

April 7th, 2014|0 Comments

The serviceEvent Element
The article The serviceEvent element introduces and provides a basic explanation of the serviceEvent XML element in CDA documents, which is part of the CDA Header.

The serviceEvent element represents (in the words of […]

Meaningful Use 2015 and 2017 Editions

March 6th, 2014|0 Comments

The 2011 and 2014 Editions of Meaningful Use
As noted in the article What is MU2?, there have been two releases of the Meaningful Use rules, certification criteria, etc. – the 2011 Edition (which defined Meaningful […]

What is C-CDA 2.0? (Jan 2015 update)

March 6th, 2014|0 Comments

C-CDA Version 1.1
The current version of the C-CDA standard that is in use at the time of the writing of this article (and  is mandated for use by Meaningful Use Stage 2 in the 2014 Edition […]

Reason for Referral in MU2

February 24th, 2014|0 Comments

The Reason for Referral Section Template
Refer to the article The Reason for Referral section template, for an overview of this CDA section template in C-CDA .
Reason for Referral Section Template in MU2
The S&I Framework C-CDA […]

Masking confidential information in MU2 C-CDAs

February 23rd, 2014|0 Comments

As explained in the article Use of nullFlavor in C-CDA templates and MU2 documents, it’s generally valid to use the nullFlavor attribute in a C-CDA document to express “no information” or similar, even for XML elements that […]

How many MU2 document types are there?

February 20th, 2014|0 Comments

In the article What is the role of C-CDA in MU2? and related articles, several references are made to the fact that there are seven MU2 C-CDA document types (refer also to the article: What are […]

Additional resources for CDA, C-CDA, and MU2

February 6th, 2014|0 Comments

There are multiple discussion forums and resources available for CDA, C-CDA and MU2.

At CDA PRO, we regularly monitor and participate in the following:

The HL7 Support Center for CDA and C-CDA (HL7 membership required)
The HL7 listserv […]

Interpreting TTT C-CDA validation results

February 6th, 2014|0 Comments

The article The TTT Validator, describes the TTT Validator and its MU2 C-CDA validation capabilities, in particular. This article focused on interpretation of the results displayed by the TTT C-CDA validation tool as the output […]

When is nullFlavor not allowed in C-CDA templates?

February 6th, 2014|0 Comments

As explained in the article The nullFlavor attribute, the nullFlavor XML attribute is used in CDA documents to indicate that information is missing, and why that information is missing.

As explained in the article Use of nullFlavor in C-CDA Templates and MU2 Documents, it’s […]

The need for “no information” sections

February 6th, 2014|0 Comments

The article “No Information” Sections describes the XML syntax for conveying “no information available” for an entire CDA section. The article Future directions for “no information” sections describes a simpler syntax for this, which was […]

Use of nullFlavor in C-CDA templates and MU2 documents

February 6th, 2014|0 Comments

As explained in the article The nullFlavor attribute, the nullFlavor XML attribute is used in CDA documents to indicate that information is missing, and why that information is missing.

Use of nullFlavor in MU2 C-CDA Templates
When a […]

What are MU2 document types?

February 6th, 2014|0 Comments

As noted in the article What is the role of C-CDA in MU2?, there are seven C-CDA document types – referred to as “MU2 summary types” in the S&I Framework C-CDA Companion Guide (“Companion Gude”) – that […]

Does MU2 define C-CDA document templates?

February 6th, 2014|0 Comments

The short answer is “no”. However, it’s important to more fully understand the relationship of “MU2 document types” and “C-CDA document templates”.

MU2 C-CDA Document Types
Refer to the article What are MU2 “document types”?, for a […]

How can you tell if a C-CDA document was intended to meet MU2?

February 6th, 2014|0 Comments

The short answer is: “you can’t”. 

You can check if a C-CDA document meets the criteria for a particular MU2 document type by running it through the TTT Validator configured for that MU2 document type.

However, there is […]

The TTT Validator

February 6th, 2014|0 Comments

As explained in the article What is MU2?, the US government EHR (Electronic Health Record) Incentive Programs regulations define the EHR “Meaningful Use” (MU) critieria that doctors and hospitals need to meet. The current 2014 […]

What is MU2?

February 6th, 2014|0 Comments

In 2009, the US government passed the “recovery act” (ARRA) that included over $25B of investment in Healthcare IT. In that context, the EHR (Electronic Health Record) Incentive Programs were created.

The EHR Incentive Programs tie […]

What is the role of C-CDA in MU2?

February 6th, 2014|0 Comments

As explained in the article What is MU2?, the 2014 Edition of the US government EHR Incentive Programs, and their associated “Meaningful Use” requirements, call out the use of the CDA standard in general, and […]

What is a CCD and what is its role in MU?

February 6th, 2014|0 Comments

CCD stands for Continuity of Care Document. It is a CDA document template that is used to provide a clinical summary for a patient in support of transitions of care.

CCD and Meaningful Use 2011 Edition
CCD […]