Common use of Clinical Classification Codes Clause in Contracts

Clinical Classification Codes. ICD-9-CM condition codes have been aggregated into clinically meaningful categories that group similar conditions (CCCODEX). CCCODEX was generated using Clinical Classification Software (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 (Elixhauser, et al, 2000). Appendix 3 lists the ICD-9-CM codes that have been aggregated for each clinical classification category. The reported ICD-9-CM condition code values were mapped to the appropriate clinical classification category prior to being collapsed to 3-digit ICD-9-CM condition codes. The result is that every record which has an ICD-9-CM diagnosis code also has a clinical classification code. As with ICD9CODX and ICD9PROX, professional coders followed specific guidelines in setting CCCODEX to a missing value. CCCODEX was coded -9 where the verbatim text fell into one of three categories: (1) the text indicated that the condition was unknown (e.g., DK); (2) the text indicated the condition could not be diagnosed by a doctor (e.g., doctor doesn’t know); or (3) the specified condition was not codeable and a procedure could not be discerned from the text. CCCODEX was coded -1 where the verbatim text strictly denotes a procedure and not a condition. A small number (less than 1 percent) of clinical classification codes have been edited for confidentiality purposes. Table 3 in Appendix 2 provides weighted and unweighted frequencies for CCCODEX. Labels for all values of the variable CCCODEX, as shown in Table 3, are provided in the SAS programming statements included in this release (see the H112SU.TXT file). In a small number of cases, clinical classification codes were further recoded to -9 if they denoted a pregnancy for a person younger than 16 or older than 44. There were 17 records recoded in this manner on the 2007 Medical Conditions File. The person’s age was determined by linking the 2007 Medical Conditions File to the 2006 and 2007 Person-Level Use PUFs. If the person’s age is under 16 or over 44 in the round in which the condition was reported, the appropriate clinical classification code was recoded to -9. Note that, prior to 2004, the range for the variable CCCODEX was 001 through 260. In 2004, revisions to the coding of mental disorders were implemented. The codes 650 through 663 replace 065 through 075 in 2004. Beginning in 2007, the mental disorders code were reorganized again. Alcohol and substance abuse disorders were broken into separate categories, and miscellaneous mental disorders was renumbered. Analysts should use the clinical classification codes listed in the Conditions PUF document (HC- 112) and the Appendix to the Event Files (HC-110I) document when analyzing MEPS conditions data. Although there is a list of clinical classification codes and labels on the Healthcare Cost and Utilization Project (HCUP) Website, if updates to these codes and/or labels are made on the HCUP Website after the release of the 2007 MEPS PUFs, these updates will not be reflected in the 2007 MEPS data.

Clinical Classification Codes. ICD-9-CM condition codes have been aggregated into clinically meaningful categories that group similar conditions (CCCODEX). CCCODEX was generated using Clinical Classification Software (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 (Elixhauser, et al, 2000). Appendix 3 lists the ICD-9-CM codes that have been aggregated for each clinical classification category. The reported ICD-9-CM condition code values were mapped to the appropriate clinical classification category prior to being collapsed to 3-digit ICD-9-CM condition codes. The result is that every record which has an ICD-9-CM diagnosis code also has a clinical classification code. For confidentiality purposes, ICD-9-CM codes are recoded to broader codes by clinicians for conditions that occur fewer than 20 times within a year’s conditions file and for clinically rare conditions. Additional factors used to determine recoding include age, gender, and population estimates. CCS codes are assigned to the original fully-specified ICD-9-CM codes. When the original ICD- 9-CM codes undergo recoding, no changes are made to the assigned CCS codes. As with ICD9CODX and ICD9PROX, professional coders followed specific guidelines in setting CCCODEX to a missing value. CCCODEX was coded -9 where the verbatim text fell into one of three categories: (1) the text indicated that the condition was unknown (e.g., DK); (2) the text indicated the condition could not be diagnosed by a doctor (e.g., doctor doesn’t know); or (3) the specified condition was not codeable and a procedure could not be discerned from the text. CCCODEX was coded -1 where the verbatim text strictly denotes a procedure and not a condition. A small number (less than 1 percent) of clinical classification codes have been edited for confidentiality purposes. Table 3 in Appendix 2 provides weighted and unweighted frequencies for CCCODEX. Labels for all values of the variable CCCODEX, as shown in Table 3, are provided in the SAS programming statements included in this release (see the H112SU.TXT H180SU.TXT file). In a small number of cases, clinical classification codes were further recoded to -9 if they denoted a pregnancy for a person younger than 16 or older than 44. There Less than one-tenth of 1 percent of records were 17 records recoded in this manner on the 2007 2015 Medical Conditions File. The person’s age was determined by linking the 2007 2015 Medical Conditions File to the 2006 2014 and 2007 2015 Person-Level Use PUFs. If the person’s age is under 16 or over 44 in the round in which the condition was reported, the appropriate clinical classification code was recoded to -9. Note that, prior to 2004, 2004 the range for the variable CCCODEX was 001 through 260. In 2004, revisions to the coding of mental disorders were implemented. The codes 650 through 663 replace replaced 065 through 075 in 2004. Beginning in 2007, the mental disorders code codes were reorganized again. Alcohol and substance abuse disorders were broken into separate categories, and miscellaneous mental disorders was were renumbered. Analysts should use the clinical classification codes listed in the Conditions PUF document (HC- 112180) and the Appendix to the Event Files document (HC-110IHC-178I) document when analyzing MEPS conditions data. Although there is a list of clinical classification codes and labels on the Healthcare Cost and Utilization Project (HCUP) Website, if updates to these codes and/or labels are made on the HCUP Website after the release of the 2007 2015 MEPS PUFs, these updates will not be reflected in the 2007 2015 MEPS data.

Clinical Classification Codes. ICD-9-CM condition codes have been aggregated into clinically meaningful categories that group similar conditions (CCCODEX). CCCODEX was generated using Clinical Classification Software (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 (Elixhauser, et al, 2000). Appendix 3 lists the ICD-9-CM codes that have been aggregated for each clinical classification category. The reported ICD-9-CM condition code values were mapped to the appropriate clinical classification category prior to being collapsed to 3-digit ICD-9-CM condition codes. The result is that every record which has an ICD-9-CM diagnosis code also has a clinical classification code. As with ICD9CODX and ICD9PROX, professional coders followed specific guidelines in setting CCCODEX to a missing value. CCCODEX was coded -9 where the verbatim text fell into one of three categories: (1) the text indicated that the condition was unknown (e.g., DK); (2) the text indicated the condition could not be diagnosed by a doctor (e.g., doctor doesn’t know); or (3) the specified condition was not codeable and a procedure could not be discerned from the text. CCCODEX was coded -1 where the verbatim text strictly denotes a procedure and not a condition. A small number (less than 1 percent) of clinical classification codes have been edited for confidentiality purposes. Table 3 in Appendix 2 provides weighted and unweighted frequencies for CCCODEX. Labels for all values of the variable CCCODEX, as shown in Table 3, are provided in the SAS programming statements included in this release (see the H112SU.TXT H120SU.TXT file). In a small number of cases, clinical classification codes were further recoded to -9 if they denoted a pregnancy for a person younger than 16 or older than 44. There were 17 records recoded in this manner on the 2007 2008 Medical Conditions File. The person’s age was determined by linking the 2007 2008 Medical Conditions File to the 2006 2007 and 2007 2008 Person-Level Use PUFs. If the person’s age is under 16 or over 44 in the round in which the condition was reported, the appropriate clinical classification code was recoded to -9. Note that, prior to 2004, the range for the variable CCCODEX was 001 through 260. In 2004, revisions to the coding of mental disorders were implemented. The codes 650 through 663 replace replaced 065 through 075 in 2004. Beginning in 2007, the mental disorders code codes were reorganized again. Alcohol and substance abuse disorders were broken into separate categories, and miscellaneous mental disorders was renumbered. Analysts should use the clinical classification codes listed in the Conditions PUF document (HC- 112120) and the Appendix to the Event Files (HC-110IHC-118I) document when analyzing MEPS conditions data. Although there is a list of clinical classification codes and labels on the Healthcare Cost and Utilization Project (HCUP) Website, if updates to these codes and/or labels are made on the HCUP Website after the release of the 2007 2008 MEPS PUFs, these updates will not be reflected in the 2007 2008 MEPS data.

Clinical Classification Codes. ICD-9-CM condition codes have been aggregated into clinically meaningful categories that group similar conditions (CCCODEX). CCCODEX was generated using Clinical Classification Software (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 (Elixhauser, et al, 2000). Appendix 3 lists the ICD-9-CM codes that have been aggregated for each clinical classification category. The reported ICD-9-CM condition code values were mapped to the appropriate clinical classification category prior to being collapsed to 3-digit ICD-9-CM condition codes. The result is that every record which has an ICD-9-CM diagnosis code also has a clinical classification code. For confidentiality purposes, ICD-9-CM codes are recoded to broader codes by clinicians for conditions that occur fewer than 20 times within a year’s conditions file and for clinically rare conditions. CCS codes are assigned to the original fully-specified ICD-9-CM codes. When the original ICD- 9-CM codes undergo recoding, no changes are made to the assigned CCS codes. As with ICD9CODX and ICD9PROX, professional coders followed specific guidelines in setting CCCODEX to a missing value. CCCODEX was coded -9 where the verbatim text fell into one of three categories: (1) the text indicated that the condition was unknown (e.g., DK); (2) the text indicated the condition could not be diagnosed by a doctor (e.g., doctor doesn’t know); or (3) the specified condition was not codeable and a procedure could not be discerned from the text. CCCODEX was coded -1 where the verbatim text strictly denotes a procedure and not a condition. A small number (less than 1 7 percent) of clinical classification codes have been edited for confidentiality purposes. Table 3 in Appendix 2 provides weighted and unweighted frequencies for CCCODEX. Labels for all values of the variable CCCODEX, as shown in Table 3, are provided in the SAS programming statements included in this release (see the H112SU.TXT H162SU.TXT file). In a small number of cases, clinical classification codes were further recoded to -9 if they denoted a pregnancy for a person younger than 16 or older than 44. There were 17 10 records recoded in this manner on the 2007 2013 Medical Conditions File. The person’s age was determined by linking the 2007 2013 Medical Conditions File to the 2006 2012 and 2007 2013 Person-Level Use PUFs. If the person’s age is under 16 or over 44 in the round in which the condition was reported, the appropriate clinical classification code was recoded to -9. Note that, prior to 2004, 2004 the range for the variable CCCODEX was 001 through 260. In 2004, revisions to the coding of mental disorders were implemented. The codes 650 through 663 replace replaced 065 through 075 in 2004. Beginning in 2007, the mental disorders code codes were reorganized again. Alcohol and substance abuse disorders were broken into separate categories, and miscellaneous mental disorders was were renumbered. Analysts should use the clinical classification codes listed in the Conditions PUF document (HC- 112162) and the Appendix to the Event Files document (HC-110IHC-160I) document when analyzing MEPS conditions data. Although there is a list of clinical classification codes and labels on the Healthcare Cost and Utilization Project (HCUP) Website, if updates to these codes and/or labels are made on the HCUP Website after the release of the 2007 2013 MEPS PUFs, these updates will not be reflected in the 2007 2013 MEPS data.

Clinical Classification Codes. ICD-9-CM condition codes have been aggregated into clinically meaningful categories that group similar conditions (CCCODEX). CCCODEX was generated using Clinical Classification Software (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 (Elixhauser, et al, 2000). Appendix 3 lists the ICD-9-CM codes that have been aggregated for each clinical classification category. The reported ICD-9-CM condition code values were mapped to the appropriate clinical classification category prior to being collapsed to 3-digit ICD-9-CM condition codes. The result is that every record which has an ICD-9-CM diagnosis code also has a clinical classification code. For confidentiality purposes, ICD-9-CM codes are recoded to broader codes by clinicians for conditions that occur fewer than four times within a year’s conditions file. CCS codes are assigned to the original fully-specified ICD-9-CM codes. When the original ICD-9-CM codes undergo recoding, no changes are made to the assigned CCS codes. As with ICD9CODX and ICD9PROX, professional coders followed specific guidelines in setting CCCODEX to a missing value. CCCODEX was coded -9 where the verbatim text fell into one of three categories: (1) the text indicated that the condition was unknown (e.g., DK); (2) the text indicated the condition could not be diagnosed by a doctor (e.g., doctor doesn’t know); or (3) the specified condition was not codeable and a procedure could not be discerned from the text. CCCODEX was coded -1 where the verbatim text strictly denotes a procedure and not a condition. A small number (less than 1 percent) of clinical classification codes have been edited for confidentiality purposes. Table 3 in Appendix 2 provides weighted and unweighted frequencies for CCCODEX. Labels for all values of the variable CCCODEX, as shown in Table 3, are provided in the SAS programming statements included in this release (see the H112SU.TXT H128SU.TXT file). In a small number of cases, clinical classification codes were further recoded to -9 if they denoted a pregnancy for a person younger than 16 or older than 44. There were 17 14 records recoded in this manner on the 2007 2009 Medical Conditions File. The person’s age was determined by linking the 2007 2009 Medical Conditions File to the 2006 2008 and 2007 2009 Person-Level Use PUFs. If the person’s age is under 16 or over 44 in the round in which the condition was reported, the appropriate clinical classification code was recoded to -9. Note that, prior to 2004, the range for the variable CCCODEX was 001 through 260. In 2004, revisions to the coding of mental disorders were implemented. The codes 650 through 663 replace replaced 065 through 075 in 2004. Beginning in 2007, the mental disorders code codes were reorganized again. Alcohol and substance abuse disorders were broken into separate categories, and miscellaneous mental disorders was renumbered. Analysts should use the clinical classification codes listed in the Conditions PUF document (HC- 112128) and the Appendix to the Event Files (HC-110IHC-126I) document when analyzing MEPS conditions data. Although there is a list of clinical classification codes and labels on the Healthcare Cost and Utilization Project (HCUP) Website, if updates to these codes and/or labels are made on the HCUP Website after the release of the 2007 2009 MEPS PUFs, these updates will not be reflected in the 2007 2009 MEPS data.

Clinical Classification Codes. ICD-9-CM condition codes have been aggregated into clinically meaningful categories that group similar conditions (CCCODEX). CCCODEX was generated using Clinical Classification Software (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 (Elixhauser, et al, 2000). Appendix 3 lists the ICD-9-CM codes that have been aggregated for each clinical classification category. The reported ICD-9-CM condition code values were mapped to the appropriate clinical classification category prior to being collapsed to 3-digit ICD-9-CM condition codes. The result is that every record which has an ICD-9-CM diagnosis code also has a clinical classification code. For confidentiality purposes, ICD-9-CM codes are recoded to broader codes by clinicians for conditions that occur fewer than 20 times within a year’s conditions file and for clinically rare conditions. CCS codes are assigned to the original fully-specified ICD-9-CM codes. When the original ICD- 9-CM codes undergo recoding, no changes are made to the assigned CCS codes. As with ICD9CODX and ICD9PROX, professional coders followed specific guidelines in setting CCCODEX to a missing value. CCCODEX was coded -9 where the verbatim text fell into one of three categories: (1) the text indicated that the condition was unknown (e.g., DK); (2) the text indicated the condition could not be diagnosed by a doctor (e.g., doctor doesn’t know); or (3) the specified condition was not codeable and a procedure could not be discerned from the text. CCCODEX was coded -1 where the verbatim text strictly denotes a procedure and not a condition. A small number (less than 1 percent) of clinical classification codes have been edited for confidentiality purposes. Table 3 in Appendix 2 provides weighted and unweighted frequencies for CCCODEX. Labels for all values of the variable CCCODEX, as shown in Table 3, are provided in the SAS programming statements included in this release (see the H112SU.TXT H170SU.TXT file). In a small number of cases, clinical classification codes were further recoded to -9 if they denoted a pregnancy for a person younger than 16 or older than 44. There were 17 9 records recoded in this manner on the 2007 2014 Medical Conditions File. The person’s age was determined by linking the 2007 2014 Medical Conditions File to the 2006 2013 and 2007 2014 Person-Level Use PUFs. If the person’s age is under 16 or over 44 in the round in which the condition was reported, the appropriate clinical classification code was recoded to -9. Note that, prior to 2004, 2004 the range for the variable CCCODEX was 001 through 260. In 2004, revisions to the coding of mental disorders were implemented. The codes 650 through 663 replace replaced 065 through 075 in 2004. Beginning in 2007, the mental disorders code codes were reorganized again. Alcohol and substance abuse disorders were broken into separate categories, and miscellaneous mental disorders was were renumbered. Analysts should use the clinical classification codes listed in the Conditions PUF document (HC- 112170) and the Appendix to the Event Files document (HC-110IHC-168I) document when analyzing MEPS conditions data. Although there is a list of clinical classification codes and labels on the Healthcare Cost and Utilization Project (HCUP) Website, if updates to these codes and/or labels are made on the HCUP Website after the release of the 2007 2014 MEPS PUFs, these updates will not be reflected in the 2007 2014 MEPS data.

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 clinical classification codes listed for each prescribed medicine event (99.72 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 2013 Medical Conditions File. Details on how to link to the MEPS 2013 Medical Conditions File are provided in the 2013 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 2013 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 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 2013 Medical Conditions File. For frequencies of conditions by event type, please see the 2013 Appendix File, HC-160I. The ICD-9-CM condition codes have been were aggregated into clinically meaningful categories that group similar conditions (CCCODEX)categories. CCCODEX was 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 (Elixhauserhomogeneous. Starting with the 2013 file, et al, 2000). Appendix 3 lists the ICD-9-CM condition and procedure codes that have been aggregated for each clinical classification categoryvariables are omitted. The reported ICD-9-CM condition code values were mapped to the appropriate clinical classification category prior to being collapsed to 3-digit ICD-9-CM condition codes. The result is that every record which has an ICD-9-CM diagnosis code also has a clinical classification code. As with ICD9CODX and ICD9PROX, professional coders followed specific guidelines in setting CCCODEX to a missing value. CCCODEX was coded -9 where the verbatim text fell into one of three categories: (1) the text indicated that the condition was unknown (e.g., DK); (2) the text indicated the condition could not be diagnosed by a doctor (e.g., doctor doesn’t know); or (3) the specified condition was not codeable and a procedure could not be discerned from the text. CCCODEX was coded -1 where the verbatim text strictly denotes a procedure and not a condition. A small number (less than 1 percent) of clinical classification codes have been edited for confidentiality purposes. Table 3 in Appendix 2 provides weighted and unweighted frequencies for CCCODEX. Labels for all values of the variable CCCODEX, as shown in Table 3, linked to each prescribed medicine event are provided sequenced in the SAS programming statements included in this release (see the H112SU.TXT file). In a small number of cases, clinical classification codes were further recoded to -9 if they denoted a pregnancy for a person younger than 16 or older than 44. There were 17 records recoded in this manner on the 2007 Medical Conditions File. The person’s age was determined by linking the 2007 Medical Conditions File to the 2006 and 2007 Person-Level Use PUFs. If the person’s age is under 16 or over 44 in the round order in which the condition conditions were reported by the household respondent, which was reported, the appropriate clinical classification code was recoded to -9. Note that, prior to 2004, the range for the variable CCCODEX was 001 through 260. In 2004, revisions to the coding in chronological order of mental disorders were implemented. The codes 650 through 663 replace 065 through 075 reporting and not in 2004. Beginning in 2007, the mental disorders code were reorganized again. Alcohol and substance abuse disorders were broken into separate categories, and miscellaneous mental disorders was renumberedorder of importance or severity. Analysts should who use the clinical classification codes listed 2013 Medical Conditions file in conjunction with this prescribed medicines event file should note that the Conditions PUF document (HC- 112) and the Appendix to the Event Files (HC-110I) document when analyzing MEPS conditions data. Although there is a list of clinical classification codes and labels on this file are sorted differently than they appear on the Healthcare Cost and Utilization Project (HCUP) Website, if updates to these codes and/or labels are made on the HCUP Website after the release of the 2007 MEPS PUFs, these updates will not be reflected in the 2007 MEPS dataMedical Conditions file.

Clinical Classification Codes. ICD-9-CM condition codes have been aggregated into clinically meaningful categories that group similar conditions (CCCODEX). CCCODEX was generated using Clinical Classification Software (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 (Elixhauser, et al, 2000). Appendix 3 lists the ICD-9-CM codes that have been aggregated for each clinical classification category. The reported ICD-9-CM condition code values were mapped to the appropriate clinical classification category prior to being collapsed to 3-digit ICD-9-CM condition codes. The result is that every record which has an ICD-9-CM diagnosis code also has a clinical classification code. For confidentiality purposes, ICD-9-CM codes are recoded to broader codes by clinicians for conditions that occur fewer than four times within a year’s conditions file. CCS codes are assigned to the original fully-specified ICD-9-CM codes. When the original ICD-9-CM codes undergo recoding, no changes are made to the assigned CCS codes. As with ICD9CODX and ICD9PROX, professional coders followed specific guidelines in setting CCCODEX to a missing value. CCCODEX was coded -9 where the verbatim text fell into one of three categories: (1) the text indicated that the condition was unknown (e.g., DK); (2) the text indicated the condition could not be diagnosed by a doctor (e.g., doctor doesn’t know); or (3) the specified condition was not codeable and a procedure could not be discerned from the text. CCCODEX was coded -1 where the verbatim text strictly denotes a procedure and not a condition. A small number (less than 1 percent) of clinical classification codes have been edited for confidentiality purposes. Table 3 in Appendix 2 provides weighted and unweighted frequencies for CCCODEX. Labels for all values of the variable CCCODEX, as shown in Table 3, are provided in the SAS programming statements included in this release (see the H112SU.TXT H137SU.TXT file). In a small number of cases, clinical classification codes were further recoded to -9 if they denoted a pregnancy for a person younger than 16 or older than 44. There were 17 10 records recoded in this manner on the 2007 2010 Medical Conditions File. The person’s age was determined by linking the 2007 2010 Medical Conditions File to the 2006 2009 and 2007 2010 Person-Level Use PUFs. If the person’s age is under 16 or over 44 in the round in which the condition was reported, the appropriate clinical classification code was recoded to -9. Note that, prior to 2004, the range for the variable CCCODEX was 001 through 260. In 2004, revisions to the coding of mental disorders were implemented. The codes 650 through 663 replace replaced 065 through 075 in 2004. Beginning in 2007, the mental disorders code codes were reorganized again. Alcohol and substance abuse disorders were broken into separate categories, and miscellaneous mental disorders was renumbered. Analysts should use the clinical classification codes listed in the Conditions PUF document (HC- 112137) and the Appendix to the Event Files (HC-110IHC-135I) document when analyzing MEPS conditions data. Although there is a list of clinical classification codes and labels on the Healthcare Cost and Utilization Project (HCUP) Website, if updates to these codes and/or labels are made on the HCUP Website after the release of the 2007 2010 MEPS PUFs, these updates will not be reflected in the 2007 2010 MEPS data.

Clinical Classification Codes. ICD-9-CM condition codes have been aggregated into clinically meaningful categories that group similar conditions (CCCODEX). CCCODEX was generated using Clinical Classification Software (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 (Elixhauser, et al, 2000). Appendix 3 lists the ICD-9-CM codes that have been aggregated for each clinical classification category. The reported ICD-9-CM condition code values were mapped to the appropriate clinical classification category prior to being collapsed to 3-digit ICD-9-CM condition codes. The result is that every record which has an ICD-9-CM diagnosis code also has a clinical classification code. For confidentiality purposes, ICD-9-CM codes are recoded to broader codes by clinicians for conditions that occur fewer than four times within a year’s conditions file. CCS codes are assigned to the original fully-specified ICD-9-CM codes. When the original ICD-9-CM codes undergo recoding, no changes are made to the assigned CCS codes. As with ICD9CODX and ICD9PROX, professional coders followed specific guidelines in setting CCCODEX to a missing value. CCCODEX was coded -9 where the verbatim text fell into one of three categories: (1) the text indicated that the condition was unknown (e.g., DK); (2) the text indicated the condition could not be diagnosed by a doctor (e.g., doctor doesn’t know); or (3) the specified condition was not codeable and a procedure could not be discerned from the text. CCCODEX was coded -1 where the verbatim text strictly denotes a procedure and not a condition. A small number (less than 1 percent) of clinical classification codes have been edited for confidentiality purposes. Table 3 in Appendix 2 provides weighted and unweighted frequencies for CCCODEX. Labels for all values of the variable CCCODEX, as shown in Table 3, are provided in the SAS programming statements included in this release (see the H112SU.TXT H146SU.TXT file). In a small number of cases, clinical classification codes were further recoded to -9 if they denoted a pregnancy for a person younger than 16 or older than 44. There were 17 13 records recoded in this manner on the 2007 2011 Medical Conditions File. The person’s age was determined by linking the 2007 2011 Medical Conditions File to the 2006 2010 and 2007 2011 Person-Level Use PUFs. If the person’s age is under 16 or over 44 in the round in which the condition was reported, the appropriate clinical classification code was recoded to -9. Note that, prior to 2004, 2004 the range for the variable CCCODEX was 001 through 260. In 2004, revisions to the coding of mental disorders were implemented. The codes 650 through 663 replace replaced 065 through 075 in 2004. Beginning in 2007, the mental disorders code codes were reorganized again. Alcohol and substance abuse disorders were broken into separate categories, and miscellaneous mental disorders was were renumbered. Analysts should use the clinical classification codes listed in the Conditions PUF document (HC- 112146) and the Appendix to the Event Files document (HC-110IHC-144I) document when analyzing MEPS conditions data. Although there is a list of clinical classification codes and labels on the Healthcare Cost and Utilization Project (HCUP) Website, if updates to these codes and/or labels are made on the HCUP Website after the release of the 2007 2011 MEPS PUFs, these updates will not be reflected in the 2007 2011 MEPS data.