Condition Codes (RXICD1X. RXICD3X) and Clinical Classification Codes (RXCCC1X-RXCCC3X) Information on household-reported medical conditions associated with each prescribed medicine event is provided on this file. There are up to three condition and clinical classification codes listed for each prescribed medicine event (99.75 percent of prescribed medicine events have 0-3 condition records linked). To obtain complete information associated with an event, the analyst must link to the 2010 Medical Conditions File. Details on how to link to the MEPS 2010 Medical Conditions File are provided in the 2010 Appendix File. The user should note that, for confidentiality restrictions, provider-reported condition information (for non-prescription medicines events) is not publicly available. Provider-reported condition data for non-prescription medicines events can be accessed only through the MEPS Data Center. The medical conditions reported by the HC respondent were recorded by the interviewer as verbatim text, which were then coded to fully-specified 2010 ICD-9-CM codes, including medical condition, V-codes, and a small number of E-codes, by professional coders. Although codes were verified and error rates did not exceed 2.5 percent for any coder, analysts should not presume this level of precision in the data; the ability of household respondents to report condition data that can be coded accurately should not be assumed. For detailed information on conditions, please refer to the documentation on the 2010 Medical Conditions File. For frequencies of conditions by event type, please see the 2010 Appendix File, HC-135I. The ICD-9-CM condition codes were aggregated into clinically meaningful categories. These categories, included on the file as RXCCC1X-RXCCC3X, were generated using Clinical Classification Software (CCS) (formerly known as Clinical Classifications for Health Care Policy Research (CCHPR)), which aggregates conditions and V-codes into mutually exclusive categories, most of which are clinically homogeneous. In order to preserve household member confidentiality, nearly all of the condition codes provided on this file have been collapsed from fully-specified codes to 3-digit code categories. The reported ICD-9-CM code values were mapped to the appropriate clinical classification category prior to being collapsed to the 3-digit categories. Because of this collapsing, it is possible for there to be duplicate 3-digit ICD-9-CM condition codes linked to a single prescribed medicine event...
