+---------------------------------------------------------------+ | | | Property of the US Government. | | No permission to copy or redistribute this software is given. | | Use of unreleased versions of this software requires the user | | to execute a written test agreement with the VistA Imaging | | Development Office of the Department of Veterans Affairs, | | telephone (301) 734-0100. | | | | The Food and Drug Administration classifies this software as | | a medical device. As such, it may not be changed in any way. | | Modifications to this software may result in an adulterated | | medical device under 21CFR820, the use of which is considered | | to be a violation of US Federal Statutes. | | | +---------------------------------------------------------------+ This file is used by the Radiology Imaging Workstation system to define logic for determining a patient's prior exams that may be of interest when viewing a given exam. Each entry in the file defines a one-to-many relationship for a current exam to prior exams of interest; the mappings are defined in terms of CPT codes.
.01current case cpt group(+)0;1FREE TEXTBThe CPT "GROUP" corresponds to the Current Case's CPT code, by which logic is defined for finding other exams (by their CPT codes) that may be of interest when viewing an exam that is part of the defined CPT GROUP. The CPT GROUP is either: A 5-digit CPT code; the first 4 digits; or, the first 3 digits of the CPT code. For example, possible CPT GROUP values for the CPT code 71020 are: 71020; 7102; and 710. CPT GROUP thus allows rules to be defined for specific CPT codes, or whole groups of codes that share the same leading 3 or 4 digits. The rationale for this is that the CPT coding scheme GENERALLY (not always) groups code ranges by body parts--we can take advantage of this to greatly reduce the numbers of entries that would be required to define mappings of exams by their CPT codes.
.02current cpt desc0;2FREE TEXTCThis is a free text description for the current CPT group.
1prior case matching cpt group1;0MULTIPLE2006.66The CPT GROUP concept, explained above in the CURRENT CASE CPT GROUP field, applies here. These are the codes which, if associated with Prior Cases for a patient, will cause the system to retrieve the images and/or information automatically for the intended purposes (e.g., Pre-Fetch or Auto-Display).

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