The sample published with the History of Present Illness section in the latest C-CDA Guide has an inaccurate template identifier:

Conformance Statement:

1. SHALL contain exactly one [1..1] templateId (CONF:81-7848) such that it
a. SHALL contain exactly one [1..1] @root="1.3.6.1.4.1.19376.1.5.3.1.3.4" (CONF:81-10458).

Sample Snippet:

<templateId root="1.3.6.1.4.1.19376.1.5.3.1.3.4.2"/>
<code codeSystem="2.16.840.1.113883.6.1" codeSystemName="LOINC"
code="10164-2"
displayName="HISTORY OF PRESENT ILLNESS"/>
<title>HISTORY OF PRESENT ILLNESS</title>