Armed Forces Health Longitudinal Health Technology Application (AHLTA) -- Composite Health Care System (CHCS) Omnibus Support Services

Case Study Details

Program Description


Unissant delivers comprehensive support to the DHA Electronic Health Records (EHR) Core Program Management Office (PMO) for the Armed Forces Health Longitudinal Health Technology Application (AHLTA) 3.3.9 baseline release—and a number of enhancement tasks for the Composite Health Care System (CHCS). As the prime contractor, Unissant provides program and project management support as well as design, development, testing, system integration, training, deployment, and operations and maintenance (O&M) support.


Our Value


Through rigorous quality processes, Unissant has helped AHLTA improve its deliverables, products, and services—and reduce overall risk.


Program Activities


Unissant provides software development lifecycle support (SDLC) for requirements analysis, design, and development, testing, and delivery of the AHLTA 3.3.9 release—as well as CHCS enhancements. In addition, Unissant performs communications, network, and system upgrades to satisfy the enhancement requirements.


Unissant developed key enhancements for the AHLTA 3.3.9 release, upgraded CHCS to InterSystems Cache 2014, and implemented an enhanced drug allergy component. Specific key enhancements and upgrades include the following:


  • AHLTA 3.3.9 Release: Key enhancements to the 3.3.9 release include 262 updated and new requirements across Normal, Local, and Training Modes for AHLTA, numerous COTS integration upgrades, and architecture updates to the AHLTA system.


  • Caché Upgrade for CHCS: CHCS upgraded Caché from version 2010.2 to version 2014.1.3 to support the need for improved performance and enhanced security. Unissant supported improvements to system availability and monitoring to ensure quick and reliable access to data.


  • Enhanced Drug Allergy Module: Unissant provides support to enhance the functionality and usability of the Drug Allergy Module. The Drug Allergy module maintains patients’ allergy information. All information is synchronized between CHCS and AHLTA every time there is a change in allergy information in either system. The upgrades will reduce the risk of negative drug-allergy interactions.




Unissant’s enhancements have:

  • Increased usability
  • Identified critical issues earlier in the software development lifecycle
  • Reduced component and implementation costs
  • Improved performance
  • Reduced operations and maintenance (O&M) costs


As a result, AHLTA’S data is more accurate and its project management, decision-making, and reporting processes are streamlined.

Contact Unissant

Unissant Logo - DSTI tag
11800 Sunrise Valley Dr., Ste 1000
Reston VA 20191
Email: information (at) unissant.com
Phone: 703.889.8500
Fax: 703.889.8501

Unissant provides advanced data analytics that empower our clients to meet their business goals. We have deep expertise in health IT, financial services, national security, and energy. Unissant delivers innovative, cost-effective solutions to large government agencies and Fortune 100 companies. Founded in 2006, Unissant is an 8(a), SDB, CMMI Level 3 company with offices in Reston, Virginia and San Antonio, Texas. In August 2015, Unissant was named by Inc. magazine as one of the nation’s fastest-growing private companies (the Inc. 5000 list). www.unissant.com

Copyright © 2006-2016 Unissant, Inc. All rights reserved. No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of Unissant, Inc., except in the case of brief quotations embodied in critical reviews and certain other noncommercial uses permitted by copyright law.

End of Document