
Mierau Medical Diagnostic and Coding Method
The Eighteen Foundational Postulates
Postulate 12 Longitudinal Principle
Statement
Medical conditions, findings, and diagnostic assessments SHALL be considered as part of their longitudinal development over time.
Definition
Longitudinal refers to the consideration of medical information across multiple points in time rather than treating each observation, investigation, or assessment as an isolated event.
A longitudinal perspective includes the sequence and relationship of:
- symptoms,
- findings,
- investigations,
- diagnostic assessments,
- treatments,
- and subsequent developments.
Principle
The medical significance of an observation SHALL be considered in relation to the patient's relevant history and subsequent course.
A medical record is therefore not merely a collection of independent entries.
The sequence of events may itself contain diagnostically relevant information.
Rationale
Practical Example
Database Requirements
Implications
Related Postulates
Key Message
A medical history is a process, not a collection of isolated moments.

Mierau Medical Diagnostic and Coding Method
The Eighteen Foundational Postulates
Postulate 12 Longitudinal Principle
Statement
Medical conditions, findings, and diagnostic assessments SHALL be considered as part of their longitudinal development over time.
Definition
Longitudinal refers to the consideration of medical information across multiple points in time rather than treating each observation, investigation, or assessment as an isolated event.
A longitudinal perspective includes the sequence and relationship of:
- symptoms,
- findings,
- investigations,
- diagnostic assessments,
- treatments,
- and subsequent developments.
Principle
The medical significance of an observation SHALL be considered in relation to the patient's relevant history and subsequent course.
A medical record is therefore not merely a collection of independent entries.
The sequence of events may itself contain diagnostically relevant information.
Rationale
Practical Example
Database Requirements
Implications
Related Postulates
Key Message
A medical history is a process, not a collection of isolated moments.

Mierau Medical Diagnostic and Coding Method
The Eighteen Foundational Postulates
Postulate 12 Longitudinal Principle
Statement
Medical conditions, findings, and diagnostic assessments SHALL be considered as part of their longitudinal development over time.
Definition
Longitudinal refers to the consideration of medical information across multiple points in time rather than treating each observation, investigation, or assessment as an isolated event.
A longitudinal perspective includes the sequence and relationship of:
- symptoms,
- findings,
- investigations,
- diagnostic assessments,
- treatments,
- and subsequent developments.
Principle
The medical significance of an observation SHALL be considered in relation to the patient's relevant history and subsequent course.
A medical record is therefore not merely a collection of independent entries.
The sequence of events may itself contain diagnostically relevant information.
Rationale
Practical Example
Database Requirements
Implications
Related Postulates
Key Message
A medical history is a process, not a collection of isolated moments.

Mierau Medical Diagnostic and Coding Method
The Eighteen Foundational Postulates
Postulate 12 Longitudinal Principle
Statement
Medical conditions, findings, and diagnostic assessments SHALL be considered as part of their longitudinal development over time.
Definition
Longitudinal refers to the consideration of medical information across multiple points in time rather than treating each observation, investigation, or assessment as an isolated event.
A longitudinal perspective includes the sequence and relationship of:
- symptoms,
- findings,
- investigations,
- diagnostic assessments,
- treatments,
- and subsequent developments.
Principle
The medical significance of an observation SHALL be considered in relation to the patient's relevant history and subsequent course.
A medical record is therefore not merely a collection of independent entries.
The sequence of events may itself contain diagnostically relevant information.
Rationale
Practical Example
Database Requirements
Implications
Related Postulates
Key Message
A medical history is a process, not a collection of isolated moments.

Mierau Medical Diagnostic and Coding Method
The Eighteen Foundational Postulates
Postulate 12 Longitudinal Principle
Statement
Medical conditions, findings, and diagnostic assessments SHALL be considered as part of their longitudinal development over time.
Definition
Longitudinal refers to the consideration of medical information across multiple points in time rather than treating each observation, investigation, or assessment as an isolated event.
A longitudinal perspective includes the sequence and relationship of:
- symptoms,
- findings,
- investigations,
- diagnostic assessments,
- treatments,
- and subsequent developments.
Principle
The medical significance of an observation SHALL be considered in relation to the patient's relevant history and subsequent course.
A medical record is therefore not merely a collection of independent entries.
The sequence of events may itself contain diagnostically relevant information.
Rationale
Practical Example
Database Requirements
Implications
Related Postulates
Key Message
A medical history is a process, not a collection of isolated moments.

Mierau Medical Diagnostic and Coding Method
The Eighteen Foundational Postulates
Postulate 12 Longitudinal Principle
Statement
Medical conditions, findings, and diagnostic assessments SHALL be considered as part of their longitudinal development over time.
Definition
Longitudinal refers to the consideration of medical information across multiple points in time rather than treating each observation, investigation, or assessment as an isolated event.
A longitudinal perspective includes the sequence and relationship of:
- symptoms,
- findings,
- investigations,
- diagnostic assessments,
- treatments,
- and subsequent developments.
Principle
The medical significance of an observation SHALL be considered in relation to the patient's relevant history and subsequent course.
A medical record is therefore not merely a collection of independent entries.
The sequence of events may itself contain diagnostically relevant information.
Rationale
Practical Example
Database Requirements
Implications
Related Postulates
Key Message
A medical history is a process, not a collection of isolated moments.