Unified Medical Language System® (UMLS®)
Clinical Classifications Software Source Information
Web site
http://www.hcup-us.ahrq.gov/toolssoftware/ccs/ccsfactsheet.jsp
Authority
The Clinical Classifications Software (CCS) for ICD-9-CM was
developed and is maintained by the Healthcare Cost and
Utilization Project (HCUP), which is sponsored by the Agency for
Healthcare Research and Quality (AHRQ).
Purpose
CCS is used to analyze costs, usage, and outcomes associated
with patient diagnoses and procedures.
Description
CCS is composed of diagnoses and procedures categories, which
are organized in two related classification systems. The
single-level system consists of 285 mutually-exclusive diagnosis
categories, 231 mutually-exclusive procedure categories, and no
hierarchical structure. The multi-level system uses the
single-level categories and International Classification of
Diseases, 9th Revision, Clinical Modification
(ICD-9-CM) codes in a hierarchical system consisting of four
levels for diagnoses and three levels for procedures.
CCS was formerly the Clinical Classifications for Health Policy Research (CCHPR).
Audience
CCS is used by health plans, policymakers, and
researchers.
Update Frequency
CCS is updated annually.
Metathesaurus Update Frequency
CCS was last updated in the Metathesaurus in 2005.
Sites Consulted
- Clinical Classification Software (CCS) for ICD-9-CM Fact Sheet [Internet]. Rockville (MD): Agency for Healthcare Research and Quality; [modified 2009 Dec 16; cited 2010 Jan 25]. Available from: http://www.hcup-us.ahrq.gov/toolssoftware/ccs/ccsfactsheet.jsp